Feature IDs and BCD keys

ID	Name	Description	BCD keys
a	<a>	The <a> element creates a hyperlink to any resource that's accessible via a URL, such as web pages, files, email addresses, or locations within the same page.	api.HTMLAnchorElement api.HTMLAnchorElement.hash api.HTMLAnchorElement.host api.HTMLAnchorElement.hostname api.HTMLAnchorElement.href api.HTMLAnchorElement.hreflang api.HTMLAnchorElement.origin api.HTMLAnchorElement.password api.HTMLAnchorElement.pathname api.HTMLAnchorElement.port api.HTMLAnchorElement.protocol api.HTMLAnchorElement.rel api.HTMLAnchorElement.relList api.HTMLAnchorElement.search api.HTMLAnchorElement.target api.HTMLAnchorElement.text api.HTMLAnchorElement.toString api.HTMLAnchorElement.type api.HTMLAnchorElement.username html.elements.a html.elements.a.href html.elements.a.hreflang html.elements.a.rel html.elements.a.rel.noopener html.elements.a.rel.noreferrer html.elements.a.target html.elements.a.type
abbr	<abbr>	The <abbr> HTML element represents an abbreviation or acronym.	html.elements.abbr
abortable-fetch	Abortable fetch	If you construct a fetch request with an AbortSignal, you can cancel the request.	api.Request.signal api.fetch.init_signal_parameter
aborting	AbortController and AbortSignal	The AbortController and AbortSignal APIs allow you to cancel an ongoing operation, such as a fetch() request.	api.AbortController api.AbortController.AbortController api.AbortController.abort api.AbortController.abort.reason_parameter api.AbortController.signal api.AbortSignal api.AbortSignal.abort_event api.AbortSignal.abort_static api.AbortSignal.abort_static.reason_parameter api.AbortSignal.aborted api.AbortSignal.reason api.AbortSignal.throwIfAborted api.AbortSignal.timeout_static
abortsignal-any	AbortSignal.any()	The AbortSignal.any() static method combines an iterable of abort signals into a single signal, with the abort reason taken from the first signal to abort.	api.AbortSignal.any_static
abs-sign	abs() and sign()	The abs() and sign() CSS functions compute the absolute value or the sign of the input.	css.types.abs css.types.sign
absolute-positioning	Absolute positioning	The position: absolute CSS declaration removes an element from the normal flow and positions it relative to its containing block, which is often the root element, or closest positioned ancestor.	css.properties.align-self.position_absolute_context css.properties.justify-self.position_absolute_context css.properties.place-self.position_absolute_context css.properties.position.absolute
accelerometer	Accelerometer	The Accelerometer, LinearAccelerationSensor and GravitySensor APIs read the acceleration applied to a device in three dimensions, either including the effect of gravity, without its effect, or only its effect, respectively.	api.Accelerometer api.Accelerometer.Accelerometer api.Accelerometer.x api.Accelerometer.y api.Accelerometer.z api.GravitySensor api.GravitySensor.GravitySensor api.LinearAccelerationSensor api.LinearAccelerationSensor.LinearAccelerationSensor api.Permissions.permission_accelerometer html.elements.iframe.allow.accelerometer http.headers.Permissions-Policy.accelerometer
accent-color	accent-color	The accent-color CSS property sets a color for checkboxes, radio buttons, and other form controls.	css.properties.accent-color css.properties.accent-color.auto
accesskey	Accesskey	The accessKey global HTML attribute gives a hint for generating a keyboard shortcut for the current element. The attribute value must consist of a single printable character.	api.HTMLElement.accessKey api.HTMLElement.accessKeyLabel html.global_attributes.accesskey
active-view-transition	Active view transition	The :active-view-transition CSS pseudo-class matches the root element when a view transition is active. The :active-view-transition-type() CSS pseudo-class matches only when the active view transition was started with the specified type.	api.ViewTransition.types api.ViewTransitionTypeSet api.ViewTransitionTypeSet.@@iterator api.ViewTransitionTypeSet.add api.ViewTransitionTypeSet.clear api.ViewTransitionTypeSet.delete api.ViewTransitionTypeSet.entries api.ViewTransitionTypeSet.forEach api.ViewTransitionTypeSet.has api.ViewTransitionTypeSet.keys api.ViewTransitionTypeSet.size api.ViewTransitionTypeSet.values css.selectors.active-view-transition css.selectors.active-view-transition-type
address	<address>	The <address> element represents contact information for a person or people, or for an organization.	html.elements.address
alerts	Alerts	The window.alert(), window.confirm(), and window.prompt() methods open modal dialogs for notifying the user, asking for confirmation, or entering text.	api.Window.alert api.Window.confirm api.Window.prompt
align-content-block	align-content in block layouts	The align-content property vertically aligns content in block layouts, like it does in flex or grid layouts.	css.properties.align-content.block_context
alignment-baseline	alignment-baseline	The alignment-baseline CSS property sets which baseline of an element is aligned with the corresponding baseline of its parent.	css.properties.alignment-baseline css.properties.alignment-baseline.alphabetic css.properties.alignment-baseline.baseline css.properties.alignment-baseline.central css.properties.alignment-baseline.ideographic css.properties.alignment-baseline.mathematical css.properties.alignment-baseline.middle
all	all	The all CSS property is a shorthand for all CSS properties, except for direction and unicode-bidi. It accepts only the keywords for explicit defaulting (such as initial and inherit), since they are the only values supported on all CSS properties.	css.properties.all
alt-text-generated-content	Alt text for generated content	The / notation in content CSS property values adds alternative text to generated content. For example, the content: url('upvote-icon.svg') / 'Upvote' declaration adds accessible 'Upvote' text to the SVG icon. Also known as alternate text.	css.properties.content.alt_text
alternative-style-sheets	Alternative style sheets	The rel="alternate stylesheet" attribute for the <link> HTML element offers an alternative style option to users.	html.elements.link.rel.alternate_stylesheet
ambient-light	Ambient light sensor	The AmbientLightSensor interface returns the current light level in lux of the ambient light level around the device.	api.AmbientLightSensor api.AmbientLightSensor.AmbientLightSensor api.AmbientLightSensor.illuminance api.Permissions.permission_ambient-light-sensor html.elements.iframe.allow.ambient-light-sensor http.headers.Permissions-Policy.ambient-light-sensor
anchor-positioning	Anchor positioning	Anchor positioning places an element based on the position of another element. For example, you can place a tooltip next to the content it references.	api.CSSPositionTryDescriptors api.CSSPositionTryDescriptors.align-self api.CSSPositionTryDescriptors.alignSelf api.CSSPositionTryDescriptors.block-size api.CSSPositionTryDescriptors.blockSize api.CSSPositionTryDescriptors.bottom api.CSSPositionTryDescriptors.height api.CSSPositionTryDescriptors.inline-size api.CSSPositionTryDescriptors.inlineSize api.CSSPositionTryDescriptors.inset api.CSSPositionTryDescriptors.inset-block api.CSSPositionTryDescriptors.inset-block-end api.CSSPositionTryDescriptors.inset-block-start api.CSSPositionTryDescriptors.inset-inline api.CSSPositionTryDescriptors.inset-inline-end api.CSSPositionTryDescriptors.inset-inline-start api.CSSPositionTryDescriptors.insetBlock api.CSSPositionTryDescriptors.insetBlockEnd api.CSSPositionTryDescriptors.insetBlockStart api.CSSPositionTryDescriptors.insetInline api.CSSPositionTryDescriptors.insetInlineEnd api.CSSPositionTryDescriptors.insetInlineStart api.CSSPositionTryDescriptors.justify-self api.CSSPositionTryDescriptors.justifySelf api.CSSPositionTryDescriptors.left api.CSSPositionTryDescriptors.margin api.CSSPositionTryDescriptors.margin-block api.CSSPositionTryDescriptors.margin-block-end api.CSSPositionTryDescriptors.margin-block-start api.CSSPositionTryDescriptors.margin-bottom api.CSSPositionTryDescriptors.margin-inline api.CSSPositionTryDescriptors.margin-inline-end api.CSSPositionTryDescriptors.margin-inline-start api.CSSPositionTryDescriptors.margin-left api.CSSPositionTryDescriptors.margin-right api.CSSPositionTryDescriptors.margin-top api.CSSPositionTryDescriptors.marginBlock api.CSSPositionTryDescriptors.marginBlockEnd api.CSSPositionTryDescriptors.marginBlockStart api.CSSPositionTryDescriptors.marginBottom api.CSSPositionTryDescriptors.marginInline api.CSSPositionTryDescriptors.marginInlineEnd api.CSSPositionTryDescriptors.marginInlineStart api.CSSPositionTryDescriptors.marginLeft api.CSSPositionTryDescriptors.marginRight api.CSSPositionTryDescriptors.marginTop api.CSSPositionTryDescriptors.max-block-size api.CSSPositionTryDescriptors.max-height api.CSSPositionTryDescriptors.max-inline-size api.CSSPositionTryDescriptors.max-width api.CSSPositionTryDescriptors.maxBlockSize api.CSSPositionTryDescriptors.maxHeight api.CSSPositionTryDescriptors.maxInlineSize api.CSSPositionTryDescriptors.maxWidth api.CSSPositionTryDescriptors.min-block-size api.CSSPositionTryDescriptors.min-height api.CSSPositionTryDescriptors.min-inline-size api.CSSPositionTryDescriptors.min-width api.CSSPositionTryDescriptors.minBlockSize api.CSSPositionTryDescriptors.minHeight api.CSSPositionTryDescriptors.minInlineSize api.CSSPositionTryDescriptors.minWidth api.CSSPositionTryDescriptors.place-self api.CSSPositionTryDescriptors.placeSelf api.CSSPositionTryDescriptors.position-anchor api.CSSPositionTryDescriptors.position-area api.CSSPositionTryDescriptors.positionAnchor api.CSSPositionTryDescriptors.positionArea api.CSSPositionTryDescriptors.right api.CSSPositionTryDescriptors.top api.CSSPositionTryDescriptors.width api.CSSPositionTryRule api.CSSPositionTryRule.name api.CSSPositionTryRule.style css.at-rules.position-try css.properties.align-items.anchor-center css.properties.align-self.anchor-center css.properties.anchor-name css.properties.anchor-name.none css.properties.anchor-scope css.properties.anchor-scope.all css.properties.anchor-scope.none css.properties.block-size.anchor-size css.properties.bottom.anchor css.properties.bottom.anchor-size css.properties.height.anchor-size css.properties.inline-size.anchor-size css.properties.inset-block-end.anchor css.properties.inset-block-end.anchor-size css.properties.inset-block-start.anchor css.properties.inset-block-start.anchor-size css.properties.inset-block.anchor css.properties.inset-block.anchor-size css.properties.inset-inline-end.anchor css.properties.inset-inline-end.anchor-size css.properties.inset-inline-start.anchor css.properties.inset-inline-start.anchor-size css.properties.inset-inline.anchor css.properties.inset-inline.anchor-size css.properties.inset.anchor css.properties.inset.anchor-size css.properties.justify-items.anchor-center css.properties.justify-self.anchor-center css.properties.left.anchor css.properties.left.anchor-size css.properties.margin-block-end.anchor-size css.properties.margin-block-start.anchor-size css.properties.margin-block.anchor-size css.properties.margin-bottom.anchor-size css.properties.margin-inline-end.anchor-size css.properties.margin-inline-start.anchor-size css.properties.margin-inline.anchor-size css.properties.margin-left.anchor-size css.properties.margin-right.anchor-size css.properties.margin-top.anchor-size css.properties.margin.anchor-size css.properties.max-block-size.anchor-size css.properties.max-height.anchor-size css.properties.max-inline-size.anchor-size css.properties.max-width.anchor-size css.properties.min-block-size.anchor-size css.properties.min-height.anchor-size css.properties.min-inline-size.anchor-size css.properties.min-width.anchor-size css.properties.place-items.anchor-center css.properties.place-self.anchor-center css.properties.position-anchor css.properties.position-anchor.auto css.properties.position-area css.properties.position-area.block-end css.properties.position-area.block-start css.properties.position-area.bottom css.properties.position-area.center css.properties.position-area.end css.properties.position-area.inline-end css.properties.position-area.inline-start css.properties.position-area.left css.properties.position-area.none css.properties.position-area.right css.properties.position-area.self-end css.properties.position-area.self-start css.properties.position-area.span-all css.properties.position-area.span-block-end css.properties.position-area.span-block-start css.properties.position-area.span-bottom css.properties.position-area.span-end css.properties.position-area.span-inline-end css.properties.position-area.span-inline-start css.properties.position-area.span-start css.properties.position-area.span-top css.properties.position-area.span-x-end css.properties.position-area.span-x-start css.properties.position-area.span-y-end css.properties.position-area.span-y-start css.properties.position-area.start css.properties.position-area.top css.properties.position-area.x-end css.properties.position-area.x-self-end css.properties.position-area.x-self-start css.properties.position-area.x-start css.properties.position-area.y-end css.properties.position-area.y-self-end css.properties.position-area.y-self-start css.properties.position-area.y-start css.properties.position-try css.properties.position-try-fallbacks css.properties.position-try-fallbacks.flip-block css.properties.position-try-fallbacks.flip-inline css.properties.position-try-fallbacks.flip-start css.properties.position-try-fallbacks.none css.properties.position-try-fallbacks.position-area css.properties.position-try-order css.properties.position-try-order.most-block-size css.properties.position-try-order.most-height css.properties.position-try-order.most-inline-size css.properties.position-try-order.most-width css.properties.position-try-order.normal css.properties.position-visibility css.properties.position-visibility.always css.properties.position-visibility.anchors-visible css.properties.position-visibility.no-overflow css.properties.right.anchor css.properties.right.anchor-size css.properties.top.anchor css.properties.top.anchor-size css.properties.width.anchor-size css.types.anchor css.types.anchor-size css.types.anchor-size.inset_margin
angle-instanced-arrays	ANGLE_instanced_arrays WebGL extension	The ANGLE_instanced_arrays extension for WebGL 1.0 contexts draws the same object multiple times or groups of similar objects multiple times, if the group shares the same vertex data, primitive count and type.	api.ANGLE_instanced_arrays api.ANGLE_instanced_arrays.drawArraysInstancedANGLE api.ANGLE_instanced_arrays.drawElementsInstancedANGLE api.ANGLE_instanced_arrays.vertexAttribDivisorANGLE
animation-composition	animation-composition	The animation-composition CSS property chooses how to combine animations that affect the same property.	css.properties.animation-composition
animations-css	Animations (CSS)	The animation CSS property animates an element's style over time, using keyframes described in @keyframes rules.	api.AnimationEvent api.AnimationEvent.AnimationEvent api.AnimationEvent.animationName api.AnimationEvent.elapsedTime api.AnimationEvent.pseudoElement api.CSSAnimation api.CSSAnimation.animationName api.CSSKeyframeRule api.CSSKeyframeRule.keyText api.CSSKeyframeRule.style api.CSSKeyframesRule api.CSSKeyframesRule.appendRule api.CSSKeyframesRule.cssRules api.CSSKeyframesRule.deleteRule api.CSSKeyframesRule.findRule api.CSSKeyframesRule.length api.CSSKeyframesRule.name css.at-rules.keyframes css.at-rules.keyframes.ignore_important_declarations css.at-rules.keyframes.named_range_keyframes css.properties.animation css.properties.animation-delay css.properties.animation-direction css.properties.animation-direction.alternate css.properties.animation-direction.alternate-reverse css.properties.animation-direction.normal css.properties.animation-direction.reverse css.properties.animation-duration css.properties.animation-duration.auto css.properties.animation-fill-mode css.properties.animation-fill-mode.backwards css.properties.animation-fill-mode.both css.properties.animation-fill-mode.forwards css.properties.animation-fill-mode.none css.properties.animation-iteration-count css.properties.animation-iteration-count.infinite css.properties.animation-name css.properties.animation-name.none css.properties.animation-play-state css.properties.animation-play-state.paused css.properties.animation-play-state.running css.properties.animation-timing-function css.properties.animation-timing-function.jump css.types.time
app-file-handlers	File handlers	The file_handlers web app manifest member registers an installed web app as a handler for files with specific file extensions or MIME types.	api.LaunchParams.files html.manifest.file_handlers
app-protocol-handlers	Protocol handlers	The protocol_handlers web app manifest member registers an installed web app as a handler for a specific protocol. When a user follows a link with the specified protocol, the installed app opens the link.	html.manifest.protocol_handlers html.manifest.protocol_handlers.protocol html.manifest.protocol_handlers.url
app-share-targets	Share targets	The share_target web app manifest member registers an installed web app as a handler for shared content. When a user shares content by using the device share dialog, the installed app can be listed as an option for handling the shared content.	html.manifest.share_target
app-shortcuts	Application shortcuts	The shortcuts web app manifest member registers common actions of an installed web app with the device. The device can present these actions to the user in contextually appropriate locations, such as jump lists on Windows or the app launcher on Android.	html.manifest.shortcuts
appearance	appearance	The appearance CSS property controls the appearance of form controls. Using appearance: none disables any default native appearance and allows the elements to be styled with CSS.	css.properties.appearance css.properties.appearance.auto css.properties.appearance.button css.properties.appearance.checkbox css.properties.appearance.listbox css.properties.appearance.menulist css.properties.appearance.menulist-button css.properties.appearance.meter css.properties.appearance.none css.properties.appearance.progress-bar css.properties.appearance.radio css.properties.appearance.searchfield css.properties.appearance.textarea css.properties.appearance.textfield
aria-attribute-reflection	ARIA attribute reflection	WAI-ARIA attributes have corresponding properties on Element and ElementInternals objects.	api.Element.ariaActiveDescendantElement api.Element.ariaAtomic api.Element.ariaAutoComplete api.Element.ariaBrailleLabel api.Element.ariaBrailleRoleDescription api.Element.ariaBusy api.Element.ariaChecked api.Element.ariaColCount api.Element.ariaColIndex api.Element.ariaColIndexText api.Element.ariaColSpan api.Element.ariaControlsElements api.Element.ariaCurrent api.Element.ariaDescribedByElements api.Element.ariaDescription api.Element.ariaDetailsElements api.Element.ariaDisabled api.Element.ariaErrorMessageElements api.Element.ariaExpanded api.Element.ariaFlowToElements api.Element.ariaHasPopup api.Element.ariaHidden api.Element.ariaInvalid api.Element.ariaKeyShortcuts api.Element.ariaLabel api.Element.ariaLabelledByElements api.Element.ariaLevel api.Element.ariaLive api.Element.ariaModal api.Element.ariaMultiLine api.Element.ariaMultiSelectable api.Element.ariaOrientation api.Element.ariaOwnsElements api.Element.ariaPlaceholder api.Element.ariaPosInSet api.Element.ariaPressed api.Element.ariaReadOnly api.Element.ariaRelevant api.Element.ariaRequired api.Element.ariaRoleDescription api.Element.ariaRowCount api.Element.ariaRowIndex api.Element.ariaRowIndexText api.Element.ariaRowSpan api.Element.ariaSelected api.Element.ariaSetSize api.Element.ariaSort api.Element.ariaValueMax api.Element.ariaValueMin api.Element.ariaValueNow api.Element.ariaValueText api.Element.role api.ElementInternals.ariaActiveDescendantElement api.ElementInternals.ariaAtomic api.ElementInternals.ariaAutoComplete api.ElementInternals.ariaBrailleLabel api.ElementInternals.ariaBrailleRoleDescription api.ElementInternals.ariaBusy api.ElementInternals.ariaChecked api.ElementInternals.ariaColCount api.ElementInternals.ariaColIndex api.ElementInternals.ariaColIndexText api.ElementInternals.ariaColSpan api.ElementInternals.ariaControlsElements api.ElementInternals.ariaCurrent api.ElementInternals.ariaDescribedByElements api.ElementInternals.ariaDescription api.ElementInternals.ariaDetailsElements api.ElementInternals.ariaDisabled api.ElementInternals.ariaErrorMessageElements api.ElementInternals.ariaExpanded api.ElementInternals.ariaFlowToElements api.ElementInternals.ariaHasPopup api.ElementInternals.ariaHidden api.ElementInternals.ariaInvalid api.ElementInternals.ariaKeyShortcuts api.ElementInternals.ariaLabel api.ElementInternals.ariaLabelledByElements api.ElementInternals.ariaLevel api.ElementInternals.ariaLive api.ElementInternals.ariaModal api.ElementInternals.ariaMultiLine api.ElementInternals.ariaMultiSelectable api.ElementInternals.ariaOrientation api.ElementInternals.ariaOwnsElements api.ElementInternals.ariaPlaceholder api.ElementInternals.ariaPosInSet api.ElementInternals.ariaPressed api.ElementInternals.ariaReadOnly api.ElementInternals.ariaRequired api.ElementInternals.ariaRoleDescription api.ElementInternals.ariaRowCount api.ElementInternals.ariaRowIndex api.ElementInternals.ariaRowIndexText api.ElementInternals.ariaRowSpan api.ElementInternals.ariaSelected api.ElementInternals.ariaSetSize api.ElementInternals.ariaSort api.ElementInternals.ariaValueMax api.ElementInternals.ariaValueMin api.ElementInternals.ariaValueNow api.ElementInternals.ariaValueText api.ElementInternals.role
array	Array (initial support)	Arrays are ordered lists of JavaScript values.	javascript.builtins.Array javascript.builtins.Array.Array javascript.builtins.Array.concat javascript.builtins.Array.join javascript.builtins.Array.length javascript.builtins.Array.pop javascript.builtins.Array.push javascript.builtins.Array.reverse javascript.builtins.Array.shift javascript.builtins.Array.slice javascript.builtins.Array.sort javascript.builtins.Array.toString javascript.builtins.Array.unshift javascript.grammar.array_literals
array-at	Array at()	The at() method of arrays and typed arrays returns the item at an index, including negative indices for getting items relative to the end of an array. Also known as the relative indexing method.	javascript.builtins.Array.at javascript.builtins.TypedArray.at
array-by-copy	Array by copy	The toReversed(), toSorted(), toSpliced(), and with() methods of arrays and typed arrays return changed copies of arrays. They stand in contrast to methods such as sort() or reverse() that change arrays in place.	javascript.builtins.Array.toReversed javascript.builtins.Array.toSorted javascript.builtins.Array.toSpliced javascript.builtins.Array.with javascript.builtins.TypedArray.toReversed javascript.builtins.TypedArray.toSorted javascript.builtins.TypedArray.with
array-copywithin	Array copyWithin()	The copyWithin() method of arrays and typed arrays shifts or copies items of an array to another index of the array without changing its length.	javascript.builtins.Array.copyWithin javascript.builtins.TypedArray.copyWithin
array-fill	Array fill()	The fill() method of arrays and typed arrays sets all or some items of an array to a given a value.	javascript.builtins.Array.fill javascript.builtins.TypedArray.fill
array-find	Array find() and findIndex()	The find() and findIndex() methods of arrays and typed arrays search an array for the first item that satisfies a test function.	javascript.builtins.Array.find javascript.builtins.Array.findIndex javascript.builtins.TypedArray.find javascript.builtins.TypedArray.findIndex
array-findlast	Array findLast() and findLastIndex()	The findLast() and findLastIndex() methods of arrays and typed arrays search an array in reverse order for the first item that satisfies a test function.	javascript.builtins.Array.findLast javascript.builtins.Array.findLastIndex javascript.builtins.TypedArray.findLast javascript.builtins.TypedArray.findLastIndex
array-flat	Array flat() and flatMap()	The flat() and flatMap() methods for arrays creates a new array such that each nested array item is concatenated into it.	javascript.builtins.Array.flat javascript.builtins.Array.flatMap
array-from	Array.from()	The Array.from() and typed array .from() static methods copy items from an iterable or array-like object to make a new array.	javascript.builtins.Array.from javascript.builtins.TypedArray.from
array-fromasync	Array.fromAsync()	The Array.fromAsync() static method copies items from an async iterable object to make a new array.	javascript.builtins.Array.fromAsync
array-group	Array grouping	The Object.groupBy() and Map.groupBy() static methods group values of arrays and iterables based on a function that returns a key for each value.	javascript.builtins.Map.groupBy javascript.builtins.Object.groupBy
array-includes	Array includes()	The includes() method of arrays and typed arrays returns whether a given value appears in the array.	javascript.builtins.Array.includes javascript.builtins.TypedArray.includes
array-isarray	Array.isArray()	The Array.isArray() static method checks whether a value is an array.	javascript.builtins.Array.isArray
array-iteration-methods	Array iteration methods	Array iteration methods	javascript.builtins.Array.every javascript.builtins.Array.filter javascript.builtins.Array.forEach javascript.builtins.Array.indexOf javascript.builtins.Array.lastIndexOf javascript.builtins.Array.map javascript.builtins.Array.reduce javascript.builtins.Array.reduceRight javascript.builtins.Array.some
array-iterators	Array iterators	Arrays are iterable with the for … of statement and enumerable with the methods entries(), keys(), and values().	javascript.builtins.Array.@@iterator javascript.builtins.Array.entries javascript.builtins.Array.keys javascript.builtins.Array.values
array-of	Array.of()	The Array.of() and typed array .of() static methods create new arrays from the values of any number of arguments.	javascript.builtins.Array.of javascript.builtins.TypedArray.of
array-splice	Array splice()	The array splice() method changes an array in-place. You can use it to delete items, overwrite items, or insert items, starting from an index.	javascript.builtins.Array.splice
article	<article>	The <article> element represents self-contained content, which is intended to be independently distributable or reusable, such as a comment, a blog post, or news article.	html.elements.article
aside	<aside>	The <aside> element represents a portion of a document whose content is only indirectly related to the document's main content.	html.elements.aside
aspect-ratio	aspect-ratio	The aspect-ratio CSS property controls the width-to-height ratio of elements. For <img> and <video> elements, the width and height attributes used together with height: auto control the aspect ratio while the image/video is loading.	css.properties.aspect-ratio css.properties.aspect-ratio.auto html.elements.img.aspect_ratio_computed_from_attributes html.elements.video.aspect_ratio_computed_from_attributes
async-await	Async functions	The async and await keywords allow you to use the asynchronous, promise-based behavior of a function without using promise chains.	javascript.builtins.AsyncFunction javascript.builtins.AsyncFunction.AsyncFunction javascript.operators.async_function javascript.operators.await javascript.statements.async_function
async-clipboard	Async clipboard	The navigator.clipboard API asynchronously reads and writes to the system clipboard.	api.Clipboard api.Clipboard.read api.Clipboard.readText api.Clipboard.type_image-png api.Clipboard.type_text-html api.Clipboard.type_text-plain api.Clipboard.write api.Clipboard.writeText api.ClipboardItem api.ClipboardItem.ClipboardItem api.ClipboardItem.getType api.ClipboardItem.presentationStyle api.ClipboardItem.types api.Navigator.clipboard api.Permissions.permission_clipboard-write
async-generators	Async generators	Async generator functions (async function*) create iterators that return multiple promises, one after another, on-demand.	javascript.builtins.AsyncGenerator javascript.builtins.AsyncGenerator.next javascript.builtins.AsyncGenerator.return javascript.builtins.AsyncGenerator.throw javascript.builtins.AsyncGeneratorFunction javascript.builtins.AsyncGeneratorFunction.AsyncGeneratorFunction javascript.functions.method_definitions.async_generator_methods javascript.operators.async_generator_function javascript.statements.async_generator_function
async-iterable-streams	Asynchronously iterable streams	Asynchronous iteration of a stream allows you to use for await … of loops to iterate through a stream's incoming data.	api.ReadableStream.@@asyncIterator
async-iterators	Async iterators and the for await..of loop	Asynchronous iterator objects, such as those returned by promises or generator functions, are iterable with the for await .. of loop.	javascript.builtins.AsyncIterator javascript.builtins.AsyncIterator.@@asyncIterator javascript.builtins.Symbol.asyncIterator javascript.statements.for_await_of javascript.statements.for_of.async_iterators
atomics-wait-async	Atomics.waitAsync	The Atomics.waitAsync() static method waits for a value in a shared memory location, providing a promise when the expected value is not yet in memory. The waitAsync() method is a non-blocking alternative to Atomics.wait().	javascript.builtins.Atomics.waitAsync
attr	attr()	The attr() CSS function, in the context of any property, returns the value of an attribute of an HTML element, with the option to return it as a specific type or unit. You can set a default value for missing or invalid attributes.	css.types.attr.fallback css.types.attr.type-or-unit css.types.attr.type-or-unit.angle css.types.attr.type-or-unit.color css.types.attr.type-or-unit.frequency css.types.attr.type-or-unit.integer css.types.attr.type-or-unit.length css.types.attr.type-or-unit.number css.types.attr.type-or-unit.percentage css.types.attr.type-or-unit.time css.types.attr.type-or-unit.url
attr-contents	attr() (content only)	The attr() CSS function, in content property declarations, sets a ::before or ::after pseudo-element's content to the value of the specified HTML attribute.	css.types.attr
attribution-reporting	Attribution reporting	The Attribution Reporting API measures when an ad click or view leads to a conversion, such as a purchase on an advertiser site.	api.HTMLAnchorElement.attributionSrc api.HTMLImageElement.attributionSrc api.HTMLScriptElement.attributionSrc api.Request.Request.init_attributionReporting_parameter api.Window.open.features_parameter_attributionsrc api.XMLHttpRequest.setAttributionReporting api.fetch.init_attributionReporting_parameter html.elements.a.attributionsrc html.elements.iframe.allow.attribution-reporting html.elements.img.attributionsrc html.elements.script.attributionsrc http.headers.Attribution-Reporting-Eligible http.headers.Attribution-Reporting-Register-Source http.headers.Attribution-Reporting-Register-Trigger http.headers.Attribution-Reporting-Support http.headers.Permissions-Policy.attribution-reporting
audio	<audio>	The <audio> element plays sound such as audio effects or music, optionally with controls provided by the browser.	api.HTMLAudioElement api.HTMLAudioElement.Audio html.elements.audio html.elements.audio.autoplay html.elements.audio.controls html.elements.audio.crossorigin html.elements.audio.loop html.elements.audio.muted html.elements.audio.preload html.elements.audio.src
audio-session	Audio session	The navigator.audioSession API controls how audio playback interacts with other applications. For example, playing music can pause audio from other applications, while ambient audio can play at the same time.	api.AudioSession api.AudioSession.type api.Navigator.audioSession
audio-video-tracks	Audio and video tracks	The audioTracks and videoTracks APIs for media elements switch audio and video tracks during playback.	api.AudioTrack api.AudioTrack.enabled api.AudioTrack.id api.AudioTrack.kind api.AudioTrack.label api.AudioTrack.language api.AudioTrackList api.AudioTrackList.addtrack_event api.AudioTrackList.change_event api.AudioTrackList.getTrackById api.AudioTrackList.length api.AudioTrackList.removetrack_event api.HTMLMediaElement.audioTracks api.HTMLMediaElement.videoTracks api.VideoTrack api.VideoTrack.id api.VideoTrack.kind api.VideoTrack.label api.VideoTrack.language api.VideoTrack.selected api.VideoTrackList api.VideoTrackList.addtrack_event api.VideoTrackList.change_event api.VideoTrackList.getTrackById api.VideoTrackList.length api.VideoTrackList.removetrack_event api.VideoTrackList.selectedIndex
audio-worklet	AudioWorklet	The AudioWorklet API runs module code in a separate thread, specifically for non-blocking, low latency audio processing.	api.AudioWorklet api.AudioWorkletGlobalScope api.AudioWorkletGlobalScope.currentFrame api.AudioWorkletGlobalScope.currentTime api.AudioWorkletGlobalScope.registerProcessor api.AudioWorkletGlobalScope.sampleRate api.AudioWorkletNode api.AudioWorkletNode.AudioWorkletNode api.AudioWorkletNode.parameters api.AudioWorkletNode.port api.AudioWorkletNode.processorerror_event api.AudioWorkletProcessor api.AudioWorkletProcessor.AudioWorkletProcessor api.AudioWorkletProcessor.port api.BaseAudioContext.audioWorklet
autocapitalize	Autocapitalize	The autocapitalize global HTML attribute sets the virtual keyboard capitalization behavior for user input on an element, such as the first letter of sentences or all words.	api.HTMLElement.autocapitalize html.global_attributes.autocapitalize
autocorrect	Autocorrect	The autocorrect global HTML attribute controls whether to automatically correct spelling or punctuation errors for user input.	api.HTMLElement.autocorrect html.global_attributes.autocorrect
autofill	:autofill	The :autofill pseudo-class matches <input> elements that have been filled in automatically by the browser.	css.selectors.autofill
autofocus	Autofocus	The autofocus HTML attribute gives focus to an element on page load.	api.HTMLElement.autofocus api.MathMLElement.autofocus api.SVGElement.autofocus html.global_attributes.autofocus svg.global_attributes.autofocus
autonomous-custom-elements	Autonomous custom elements	Autonomous custom elements are HTML elements with a hyphenated tag name (like <example-element>) that have behaviors you define.	api.CustomElementRegistry api.CustomElementRegistry.define api.CustomElementRegistry.define.disabledFeatures_static_property api.CustomElementRegistry.get api.CustomElementRegistry.getName api.CustomElementRegistry.upgrade api.CustomElementRegistry.whenDefined api.Window.customElements css.selectors.defined
avif	AVIF	AVIF (AV1 Image File Format) is an image format based on the AV1 video format.
b	<b>	The <b> HTML element draws reader's attention to text, styling text as bold by default.	html.elements.b
backdrop	::backdrop	The ::backdrop CSS pseudo-element is a box underneath an element in the top layer, such as a <dialog>. It can be used to create obscuring effects distinguishing a modal element from the elements underneath.	css.selectors.backdrop css.selectors.backdrop.dialog css.selectors.backdrop.inherit_from_originating_element
backdrop-filter	backdrop-filter	The backdrop-filter CSS property applies graphical effects such as blurring or color shifting to the area behind an element.	css.properties.backdrop-filter
background	background	The background CSS property is a shorthand that sets several background properties at once.	css.properties.background css.properties.background.multiple_backgrounds
background-attachment	background-attachment	The background-attachment CSS property sets whether an element's background image or gradient moves as the element scrolls.	css.properties.background-attachment css.properties.background-attachment.fixed css.properties.background-attachment.local css.properties.background-attachment.multiple_backgrounds css.properties.background-attachment.scroll
background-blend-mode	background-blend-mode	The background-blend-mode CSS property blends an element's background image and background color using blend modes like multiply, difference, or color.	css.properties.background-blend-mode css.types.blend-mode
background-clip	background-clip	The background-clip CSS property sets the extent of the background: the padding box, the content box, or the default border box.	css.properties.background-clip css.properties.background-clip.border-box css.properties.background-clip.content-box css.properties.background-clip.padding-box css.properties.background.background-clip
background-clip-border-area	background-clip: border-area	The background-clip: border-area CSS declaration draws the background underneath only the border of an element.	css.properties.background-clip.border-area
background-clip-text	background-clip: text	The background-clip: text CSS declaration draws the background underneath only the text in the element.	css.properties.background-clip.text
background-color	background-color	The background-color CSS property sets the fill color of an element, behind any content and background images or gradients.	css.properties.background-color
background-fetch	Background fetch	Background fetch downloads data in the background even when the web page is closed.	api.BackgroundFetchEvent api.BackgroundFetchEvent.BackgroundFetchEvent api.BackgroundFetchEvent.registration api.BackgroundFetchManager api.BackgroundFetchManager.fetch api.BackgroundFetchManager.get api.BackgroundFetchManager.getIds api.BackgroundFetchRecord api.BackgroundFetchRecord.request api.BackgroundFetchRecord.responseReady api.BackgroundFetchRegistration api.BackgroundFetchRegistration.abort api.BackgroundFetchRegistration.downloadTotal api.BackgroundFetchRegistration.downloaded api.BackgroundFetchRegistration.failureReason api.BackgroundFetchRegistration.id api.BackgroundFetchRegistration.match api.BackgroundFetchRegistration.matchAll api.BackgroundFetchRegistration.progress_event api.BackgroundFetchRegistration.recordsAvailable api.BackgroundFetchRegistration.result api.BackgroundFetchRegistration.uploadTotal api.BackgroundFetchRegistration.uploaded api.BackgroundFetchUpdateUIEvent api.BackgroundFetchUpdateUIEvent.BackgroundFetchUpdateUIEvent api.BackgroundFetchUpdateUIEvent.updateUI api.ServiceWorkerGlobalScope.backgroundfetchabort_event api.ServiceWorkerGlobalScope.backgroundfetchclick_event api.ServiceWorkerGlobalScope.backgroundfetchfail_event api.ServiceWorkerGlobalScope.backgroundfetchsuccess_event api.ServiceWorkerRegistration.backgroundFetch
background-image	background-image	The background-image CSS property sets the graphics to display behind the content of an element and in front of the background color. Graphics may be any combination of images or gradients.	css.properties.background-image css.properties.background-image.multiple_backgrounds css.properties.background-image.none
background-origin	background-origin	The background-origin CSS property sets the background starting position relative to the border and padding of an element.	css.properties.background-origin css.properties.background-origin.border-box css.properties.background-origin.content-box css.properties.background-origin.padding-box css.properties.background.background-origin
background-position	background-position	The background-position CSS property offsets the initial position of background images relative to the background origin.	css.properties.background-position css.properties.background-position-x css.properties.background-position-x.side-relative_values css.properties.background-position-y css.properties.background-position-y.side-relative_values css.properties.background-position.bottom css.properties.background-position.center css.properties.background-position.left css.properties.background-position.multiple_backgrounds css.properties.background-position.right css.properties.background-position.side-relative_values css.properties.background-position.top
background-repeat	background-repeat	The background-repeat CSS property sets how a background image is tiled.	css.properties.background-repeat css.properties.background-repeat.2-value css.properties.background-repeat.multiple_backgrounds css.properties.background-repeat.no-repeat css.properties.background-repeat.repeat css.properties.background-repeat.repeat-x css.properties.background-repeat.repeat-y css.properties.background-repeat.round css.properties.background-repeat.space
background-size	background-size	The background-size CSS property scales or stretches a background based on the size of the element (with the contain and cover keywords), a length, or percentage.	css.properties.background-size css.properties.background-size.auto css.properties.background-size.contain css.properties.background-size.cover css.properties.background.background-size
background-sync	Background sync	The background synchronization API registers a service worker callback to run only when the device is no longer offline. You can use this to let users continue using your app while offline and synchronize with a server after reconnecting.	api.ServiceWorkerGlobalScope.sync_event api.ServiceWorkerRegistration.sync api.SyncEvent api.SyncEvent.SyncEvent api.SyncEvent.lastChance api.SyncEvent.tag api.SyncManager api.SyncManager.getTags api.SyncManager.register api.SyncManager.worker_support
badging	Badging	The navigator.setAppBadge() method allows installed web applications to display an application badge, typically a dot or number shown alongside the application's icon on the device's home screen or application dock.	api.Navigator.clearAppBadge api.Navigator.setAppBadge
barcode	Barcode detector	The BarcodeDetector API recognizes various barcode formats in images.	api.BarcodeDetector api.BarcodeDetector.BarcodeDetector api.BarcodeDetector.detect api.BarcodeDetector.getSupportedFormats_static
barprop	BarProp	The visible property of the window.locationbar, window.menubar, window.personalbar, window.scrollbars, window.statusbar, and window.toolbar APIs historically represented the visibility of a browser user interface. For privacy reasons, it now represents whether the window is a pop-up.	api.BarProp api.BarProp.visible api.BarProp.visible.returns_popup api.Window.locationbar api.Window.menubar api.Window.personalbar api.Window.scrollbars api.Window.statusbar api.Window.toolbar
base	<base>	The <base> element sets the base URL (the URL that relative URLs are relative to) for all relative URLs in the document.	api.HTMLBaseElement api.HTMLBaseElement.href api.HTMLBaseElement.target html.elements.base html.elements.base.href html.elements.base.href.forbid_data_javascript_urls html.elements.base.href.relative_url html.elements.base.target
base64encodedecode	Base64 encoding and decoding	The atob() and btoa() global functions encode and decode strings to and from base 64, respectively.	api.atob api.btoa
baseline-shift	baseline-shift	The baseline-shift CSS property sets the position of an element relative to its dominant baseline.	css.properties.baseline-shift css.properties.baseline-shift.baseline css.properties.baseline-shift.sub css.properties.baseline-shift.super
baseline-source	baseline-source	The baseline-source CSS property controls how inline-level boxes with multiple lines of text are aligned with the surrounding text. By default, which typographic baseline is used depends on the display property value.	css.properties.baseline-source css.properties.baseline-source.auto css.properties.baseline-source.first css.properties.baseline-source.last
battery	Battery status	The navigator.getBattery() API obtains information about the device's battery, including charge level and status. Also known as the Battery API.	api.BatteryManager api.BatteryManager.charging api.BatteryManager.chargingTime api.BatteryManager.chargingchange_event api.BatteryManager.chargingtimechange_event api.BatteryManager.dischargingTime api.BatteryManager.dischargingtimechange_event api.BatteryManager.level api.BatteryManager.levelchange_event api.BatteryManager.secure_context_required api.Navigator.getBattery api.Navigator.getBattery.secure_context_required
bdi	<bdi>	The <bdi> element isolates text that may have a different text direction from its surrounding text. This prevents the browser's bidirectional text algorithm from affecting or being affected by the direction of the surrounding text.	html.elements.bdi
bdo	<bdo>	The <bdo> element overrides the directionality of text, so that the text within is rendered in a different direction than the surrounding text.	html.elements.bdo
beacons	Beacons	The navigator.sendBeacon() method asynchronously sends an HTTP POST request with a limited amount of data, typically for app state, events, and analytics data. The one-way beacon is guaranteed to be initiated before the browser unloads the page, but the sender does not get to handle the response.	api.Navigator.sendBeacon
before-after	::before and ::after	The ::before and ::after CSS pseudo-elements select inline boxes preceding and following an element. They are often used with the content property to generate cosmetic content.	css.selectors.after css.selectors.after.animation_and_transition_support css.selectors.before css.selectors.before.animation_and_transition_support
beforeunload	Beforeunload	The beforeunload event is fired when the current window is about to be unloaded. Typically this is used to display a dialog to confirm if users really want to leave the page when there is unsaved data that would be lost.	api.BeforeUnloadEvent api.BeforeUnloadEvent.user_interaction api.Window.beforeunload_event api.Window.beforeunload_event.preventdefault_activation
bfcache-blocking-reasons	Back/forward cache blocking reasons	The notRestoredReasons property of a PerformanceNavigationTiming object explains why the current document was blocked from using the back/forward cache (also known as the bfcache) on navigation.	api.NotRestoredReasonDetails api.NotRestoredReasonDetails.reason api.NotRestoredReasonDetails.toJSON api.NotRestoredReasons api.NotRestoredReasons.children api.NotRestoredReasons.id api.NotRestoredReasons.name api.NotRestoredReasons.reasons api.NotRestoredReasons.src api.NotRestoredReasons.toJSON api.NotRestoredReasons.url api.PerformanceNavigationTiming.notRestoredReasons
bigint	BigInt	The BigInt JavaScript type represents integers of any size, including integers too large for the primitive Number type.	javascript.builtins.BigInt javascript.builtins.BigInt.BigInt javascript.builtins.BigInt.asIntN javascript.builtins.BigInt.asUintN javascript.builtins.BigInt.toString javascript.builtins.BigInt.valueOf
bigint64array	BigInt64Array	The BigInt64Array and BigUint64Array typed arrays represent 64-bit integers, signed and unsigned respectively.	javascript.builtins.BigInt64Array javascript.builtins.BigInt64Array.BigInt64Array javascript.builtins.BigUint64Array javascript.builtins.BigUint64Array.BigUint64Array javascript.builtins.DataView.getBigInt64 javascript.builtins.DataView.getBigUint64 javascript.builtins.DataView.setBigInt64 javascript.builtins.DataView.setBigUint64
blocking-render	blocking="render"	The blocking="render" attribute for <link>, <script>, and <style> elements blocks rendering until the external script or stylesheet has been loaded. For <link rel="expect">, rendering is blocked until a specific element is in the DOM.	api.HTMLLinkElement.blocking api.HTMLScriptElement.blocking api.HTMLStyleElement.blocking html.elements.link.blocking html.elements.script.blocking html.elements.style.blocking http.headers.Link.blocking
blockquote	<blockquote>	The <blockquote> element represents an extended quotation, styling contents as an indented block by default.	html.elements.blockquote html.elements.blockquote.cite
body	<body>	The <body> element represents the content of an HTML document.	api.HTMLBodyElement html.elements.body
border-image	Border images	The border-image CSS property draws an image around an element.	css.properties.border-image css.properties.border-image-outset css.properties.border-image-repeat css.properties.border-image-repeat.repeat css.properties.border-image-repeat.round css.properties.border-image-repeat.space css.properties.border-image-repeat.stretch css.properties.border-image-slice css.properties.border-image-source css.properties.border-image-width css.properties.border-image-width.auto css.properties.border-image.fill css.properties.border-image.gradient css.properties.border-image.optional_border_image_slice
border-radius	border-radius	The border-radius CSS property rounds the corners of the border drawn around an element.	css.properties.border-bottom-left-radius css.properties.border-bottom-left-radius.elliptical_corners css.properties.border-bottom-left-radius.percentages css.properties.border-bottom-right-radius css.properties.border-bottom-right-radius.elliptical_corners css.properties.border-bottom-right-radius.percentages css.properties.border-radius css.properties.border-radius.4_values_for_4_corners css.properties.border-radius.elliptical_borders css.properties.border-radius.percentages css.properties.border-top-left-radius css.properties.border-top-left-radius.elliptical_corners css.properties.border-top-left-radius.percentages css.properties.border-top-right-radius css.properties.border-top-right-radius.elliptical_corners css.properties.border-top-right-radius.percentages
borders	Borders	The border CSS property sets the color, style, and width of the line around an element.	css.properties.border css.properties.border-bottom css.properties.border-bottom-color css.properties.border-bottom-style css.properties.border-bottom-width css.properties.border-color css.properties.border-left css.properties.border-left-color css.properties.border-left-style css.properties.border-left-width css.properties.border-right css.properties.border-right-color css.properties.border-right-style css.properties.border-right-width css.properties.border-style css.properties.border-style.dashed css.properties.border-style.dotted css.properties.border-style.double css.properties.border-style.groove css.properties.border-style.hidden css.properties.border-style.inset css.properties.border-style.none css.properties.border-style.outset css.properties.border-style.ridge css.properties.border-style.solid css.properties.border-top css.properties.border-top-color css.properties.border-top-style css.properties.border-top-width css.properties.border-width css.types.line-style
box-decoration-break	box-decoration-break	The box-decoration-break CSS property sets whether box decorations, such as borders or backgrounds, of an element divided across a page, column, or region wraps each fragment or splits across the break.	css.properties.box-decoration-break css.properties.box-decoration-break.clone css.properties.box-decoration-break.slice
box-shadow	box-shadow	The box-shadow CSS property applies shadow effects around an element's frame. This can create drop shadow and inner shadow effects.	css.properties.box-shadow css.properties.box-shadow.inset css.properties.box-shadow.multiple_shadows css.properties.box-shadow.spread_radius
box-sizing	box-sizing	The box-sizing CSS property sets whether an element's width and height are calculated based on the content-box, which does not count the size of borders or padding, or border-box, which does count them.	css.properties.box-sizing css.properties.box-sizing.border-box css.properties.box-sizing.content-box
br	<br>	The <br> element produces line breaks in text.	api.HTMLBRElement html.elements.br
broadcast-channel	BroadcastChannel	The BroadcastChannel API allows you to send messages between same-origin browsing contexts, such as between the same page loaded in multiple tabs.	api.BroadcastChannel api.BroadcastChannel.BroadcastChannel api.BroadcastChannel.close api.BroadcastChannel.message_event api.BroadcastChannel.messageerror_event api.BroadcastChannel.name api.BroadcastChannel.postMessage
brotli	Brotli compression	Brotli is a lossless data compression algorithm. When used as a content encoding, it often provides better compression than gzip.	http.headers.Content-Encoding.br
button	<button>	The <button> HTML element represents a button that triggers some action, such as submitting a form or opening a dialog, styled as a labeled rectangular box by default.	api.HTMLButtonElement api.HTMLButtonElement.disabled api.HTMLButtonElement.form api.HTMLButtonElement.formAction api.HTMLButtonElement.formEnctype api.HTMLButtonElement.formMethod api.HTMLButtonElement.formNoValidate api.HTMLButtonElement.formTarget api.HTMLButtonElement.labels api.HTMLButtonElement.name api.HTMLButtonElement.type api.HTMLButtonElement.value html.elements.button html.elements.button.disabled html.elements.button.form html.elements.button.formaction html.elements.button.formenctype html.elements.button.formmethod html.elements.button.formnovalidate html.elements.button.formtarget html.elements.button.name html.elements.button.type html.elements.button.value
calc	calc()	The calc() CSS function computes mathematical expressions such a calc(100%/3 - 1em).	css.types.calc css.types.calc.gradient_color_stops css.types.calc.nested css.types.calc.number_values
calc-constants	calc() keywords	The e, pi, infinity, and NaN keywords represent well-defined constants accepted in CSS math functions such as calc().	css.types.calc-keyword css.types.calc-keyword.NaN css.types.calc-keyword.e css.types.calc-keyword.infinity css.types.calc-keyword.pi
calc-size	calc-size()	The calc-size() CSS function computes mathematical expressions that include height and width keyword values, for example calc-size(fit-content, size / 2). Not to be confused with the calc() CSS function, which cannot use keyword values.	css.types.calc-size
canvas	<canvas>	The <canvas> HTML element is a space to draw graphics in, using the 2D canvas API, WebGL, or WebGPU.	api.HTMLCanvasElement api.HTMLCanvasElement.getContext api.HTMLCanvasElement.height api.HTMLCanvasElement.toBlob api.HTMLCanvasElement.toDataURL api.HTMLCanvasElement.width html.elements.canvas html.elements.canvas.height html.elements.canvas.width
canvas-2d	2D canvas	The CanvasRenderingContext2D API is the "2d" rendering context for the <canvas> element. It represents a flat, two-dimensional space for drawing graphics and animations.	api.CanvasGradient api.CanvasGradient.addColorStop api.CanvasPattern api.CanvasPattern.setTransform api.CanvasPattern.setTransform.dommatrix api.CanvasRenderingContext2D api.CanvasRenderingContext2D.arc api.CanvasRenderingContext2D.arcTo api.CanvasRenderingContext2D.beginPath api.CanvasRenderingContext2D.bezierCurveTo api.CanvasRenderingContext2D.canvas api.CanvasRenderingContext2D.clearRect api.CanvasRenderingContext2D.clip api.CanvasRenderingContext2D.clip.path_parameter api.CanvasRenderingContext2D.closePath api.CanvasRenderingContext2D.createImageData api.CanvasRenderingContext2D.createLinearGradient api.CanvasRenderingContext2D.createPattern api.CanvasRenderingContext2D.createRadialGradient api.CanvasRenderingContext2D.direction api.CanvasRenderingContext2D.drawFocusIfNeeded api.CanvasRenderingContext2D.drawFocusIfNeeded.path_parameter api.CanvasRenderingContext2D.drawImage api.CanvasRenderingContext2D.drawImage.ImageBitmap_source_image api.CanvasRenderingContext2D.ellipse api.CanvasRenderingContext2D.fill api.CanvasRenderingContext2D.fill.path_parameter api.CanvasRenderingContext2D.fillRect api.CanvasRenderingContext2D.fillStyle api.CanvasRenderingContext2D.fillText api.CanvasRenderingContext2D.filter api.CanvasRenderingContext2D.font api.CanvasRenderingContext2D.fontKerning api.CanvasRenderingContext2D.fontStretch api.CanvasRenderingContext2D.fontVariantCaps api.CanvasRenderingContext2D.getContextAttributes api.CanvasRenderingContext2D.getImageData api.CanvasRenderingContext2D.getLineDash api.CanvasRenderingContext2D.getTransform api.CanvasRenderingContext2D.globalAlpha api.CanvasRenderingContext2D.globalCompositeOperation api.CanvasRenderingContext2D.imageSmoothingEnabled api.CanvasRenderingContext2D.imageSmoothingQuality api.CanvasRenderingContext2D.isPointInPath api.CanvasRenderingContext2D.isPointInPath.path_parameter api.CanvasRenderingContext2D.isPointInStroke api.CanvasRenderingContext2D.isPointInStroke.path_parameter api.CanvasRenderingContext2D.letterSpacing api.CanvasRenderingContext2D.lineCap api.CanvasRenderingContext2D.lineDashOffset api.CanvasRenderingContext2D.lineJoin api.CanvasRenderingContext2D.lineTo api.CanvasRenderingContext2D.lineWidth api.CanvasRenderingContext2D.measureText api.CanvasRenderingContext2D.miterLimit api.CanvasRenderingContext2D.moveTo api.CanvasRenderingContext2D.putImageData api.CanvasRenderingContext2D.quadraticCurveTo api.CanvasRenderingContext2D.rect api.CanvasRenderingContext2D.resetTransform api.CanvasRenderingContext2D.restore api.CanvasRenderingContext2D.rotate api.CanvasRenderingContext2D.save api.CanvasRenderingContext2D.scale api.CanvasRenderingContext2D.setLineDash api.CanvasRenderingContext2D.setTransform api.CanvasRenderingContext2D.setTransform.matrix_parameter api.CanvasRenderingContext2D.shadowBlur api.CanvasRenderingContext2D.shadowColor api.CanvasRenderingContext2D.shadowOffsetX api.CanvasRenderingContext2D.shadowOffsetY api.CanvasRenderingContext2D.stroke api.CanvasRenderingContext2D.stroke.path_parameter api.CanvasRenderingContext2D.strokeRect api.CanvasRenderingContext2D.strokeStyle api.CanvasRenderingContext2D.strokeText api.CanvasRenderingContext2D.textAlign api.CanvasRenderingContext2D.textBaseline api.CanvasRenderingContext2D.textRendering api.CanvasRenderingContext2D.transform api.CanvasRenderingContext2D.translate api.CanvasRenderingContext2D.wordSpacing api.ImageData api.ImageData.ImageData api.ImageData.colorSpace api.ImageData.data api.ImageData.height api.ImageData.width api.Path2D api.Path2D.Path2D api.Path2D.addPath api.Path2D.arc api.Path2D.arcTo api.Path2D.bezierCurveTo api.Path2D.closePath api.Path2D.ellipse api.Path2D.lineTo api.Path2D.moveTo api.Path2D.quadraticCurveTo api.Path2D.rect api.Path2D.roundRect api.TextMetrics api.TextMetrics.actualBoundingBoxAscent api.TextMetrics.actualBoundingBoxDescent api.TextMetrics.actualBoundingBoxLeft api.TextMetrics.actualBoundingBoxRight api.TextMetrics.alphabeticBaseline api.TextMetrics.emHeightAscent api.TextMetrics.emHeightDescent api.TextMetrics.fontBoundingBoxAscent api.TextMetrics.fontBoundingBoxDescent api.TextMetrics.hangingBaseline api.TextMetrics.ideographicBaseline api.TextMetrics.width
canvas-2d-alpha	2D canvas opacity	The optional alpha parameter of a 2D canvas's getContext() method sets whether the canvas has an alpha transparency channel. If set to false, then this permits the browser to optimize compositing for an opaque canvas.	api.HTMLCanvasElement.getContext.2d_context.options_alpha_parameter
canvas-2d-color-management	Color management for 2D canvas	The optional colorSpace parameter of a 2D canvas's getContext() method chooses the color representation, such as "srgb" or "display-p3".	api.HTMLCanvasElement.getContext.2d_context.options_colorSpace_parameter
canvas-2d-desynchronized	Desynchronized 2D canvas	The optional desynchronized parameter of a canvas's getContext() method permits the browser to draw a 2D canvas independently of the event loop. This can reduce drawing latency.	api.HTMLCanvasElement.getContext.2d_context.options_desynchronized_parameter
canvas-2d-willreadfrequently	willReadFrequently	The optional willReadFrequently parameter of a canvas's getContext() method permits the browser to optimize for frequent getImageData() calls by avoiding hardware acceleration. Also known as multiple readback.	api.HTMLCanvasElement.getContext.2d_context.options_willReadFrequently_parameter
canvas-context-lost	contextlost and contextrestored	The contextlost event for <canvas> fires when the canvas backing storage is lost, while the contextrestored event fires when it is recreated.	api.CanvasRenderingContext2D.isContextLost api.HTMLCanvasElement.contextlost_event api.HTMLCanvasElement.contextrestored_event api.OffscreenCanvas.contextlost_event api.OffscreenCanvas.contextrestored_event api.OffscreenCanvasRenderingContext2D.isContextLost
canvas-createconicgradient	Canvas createConicGradient()	The createConicGradient() methods draw a conic gradient to a 2D canvas.	api.CanvasRenderingContext2D.createConicGradient api.OffscreenCanvasRenderingContext2D.createConicGradient
canvas-reset	Canvas reset()	The reset() method clears a canvas to its initial state.	api.CanvasRenderingContext2D.reset api.OffscreenCanvasRenderingContext2D.reset
canvas-roundrect	Canvas roundRect()	The roundRect() methods draw a rounded rectangle to a 2D canvas.	api.CanvasRenderingContext2D.roundRect api.OffscreenCanvasRenderingContext2D.roundRect
cap	cap unit	The cap CSS length unit corresponds to the height of Latin capital letters.	css.types.length.cap
capture-stream-audio-video	captureStream() for <audio> and <video>	The captureStream() method for <audio> and <video> elements returns a MediaStream for the media element's content. You can use this to record media or send it elsewhere, such as a canvas or WebRTC connection.	api.HTMLMediaElement.captureStream
capture-stream-canvas	captureStream() for <canvas>	The captureStream() method for <canvas> elements returns a MediaStream which includes a CanvasCaptureMediaStreamTrack representing real-time video of the canvas image. You can use this to record the canvas, or send it elsewhere, such as another canvas or WebRTC connection.	api.CanvasCaptureMediaStreamTrack api.CanvasCaptureMediaStreamTrack.canvas api.CanvasCaptureMediaStreamTrack.requestFrame api.HTMLCanvasElement.captureStream
caret-color	caret-color	The caret-color CSS property sets the color of the text insertion pointer in a text input.	css.properties.caret-color
cascade-layers	Cascade layers	The @layer CSS at-rule avoids specificity conflicts by providing priority levels for different groups of CSS rules, such as low-priority styles like resets, and high-priority styles like UI components.	api.CSSImportRule.layerName api.CSSLayerBlockRule api.CSSLayerBlockRule.name api.CSSLayerStatementRule api.CSSLayerStatementRule.nameList css.at-rules.import.layer css.at-rules.layer css.types.global_keywords.revert-layer
case-insensitive-attributes	Case-insensitive attribute selector	The i identifier in a CSS attribute selector matches attribute values case-insensitively in document languages like XML where attribute values are case-sensitive.	css.selectors.attribute.case_insensitive_modifier
case-sensitive-attributes	Case-sensitive attribute selector	The s identifier in a CSS attribute selector matches attribute values case-sensitively in document languages like HTML where attribute values are case-insensitive.	css.selectors.attribute.case_sensitive_modifier
ch	ch unit	The ch CSS length unit is a font-relative length based on the width of the zero (0) character.	css.types.length.ch
change-event	Change event	The change event for <input>, <select>, and <textarea> elements fires when the user modifies the element's value. Unlike the input event, the change event does not necessarily fire on every alteration to an element's value.	api.HTMLElement.change_event
channel-messaging	Channel messaging	Channel messaging communicates one-to-one between browsing contexts on the same origin, such as between <iframe> elements or two documents using a shared worker.	api.MessageChannel api.MessageChannel.MessageChannel api.MessageChannel.port1 api.MessageChannel.port2 api.MessageEvent.ports api.MessagePort api.MessagePort.close api.MessagePort.message_event api.MessagePort.postMessage api.MessagePort.start api.MessagePort.worker_support
charset	@charset	The @charset CSS at-rule specifies the character encoding of an external style sheet.	css.at-rules.charset
check-visibility	checkVisibility()	The checkVisibility() method checks if an element is potentially visible, with optional parameters for the kinds of visibility to check. For example, it checks whether the element has the style display: none, but can also check for visibility: hidden.	api.Element.checkVisibility api.Element.checkVisibility.options_checkOpacity_parameter api.Element.checkVisibility.options_checkVisibilityCSS_parameter api.Element.checkVisibility.options_contentVisibilityAuto_parameter api.Element.checkVisibility.options_opacityProperty_parameter api.Element.checkVisibility.options_visibilityProperty_parameter
cite	<cite>	The <cite> element represents the title of a quoted, referenced, or mentioned creative work, such as a film or book.	html.elements.cite
class-syntax	Classes	Classes are an object-oriented syntax for JavaScript prototypes.	javascript.classes javascript.classes.constructor javascript.classes.extends javascript.classes.private_class_fields javascript.classes.private_class_fields_in javascript.classes.private_class_methods javascript.classes.public_class_fields javascript.classes.static javascript.classes.static_class_fields javascript.classes.static_initialization_blocks javascript.operators.class javascript.operators.new_target javascript.operators.super javascript.statements.class
clear-site-data	Clearing site data	The Clear-Site-Data header deletes browsing data (such as cookies, storage, or cache) associated with the requesting website.	http.headers.Clear-Site-Data http.headers.Clear-Site-Data.cache http.headers.Clear-Site-Data.clientHints http.headers.Clear-Site-Data.cookies http.headers.Clear-Site-Data.executionContexts http.headers.Clear-Site-Data.secure_context_required http.headers.Clear-Site-Data.storage http.headers.Clear-Site-Data.wildcard
clip	clip	The clip CSS property sets the visible area of an absolutely positioned element.	css.properties.clip css.properties.clip.auto css.types.shape css.types.shape.rect
clip-path	clip-path	The clip-path CSS property and SVG attribute set the visible area of an element. Everything outside the area will be hidden.	api.SVGClipPathElement api.SVGClipPathElement.clipPathUnits api.SVGClipPathElement.transform css.properties.clip-path css.properties.clip-path.basic_shape css.properties.clip-path.html_elements css.properties.clip-path.path css.properties.clip-path.svg_elements svg.elements.clipPath svg.elements.clipPath.clipPathUnits svg.elements.clipPath.systemLanguage svg.global_attributes.clip-path
clip-path-animatable	Animatable clipping paths	The clip-path property can be animated using CSS transitions and animations.	css.properties.clip-path.is_animatable
clip-path-boxes	Clip path boxes	The fill-box, stroke-box, and view-box values for clip-path set an edge of the element's box to use as the clipping shape.	css.properties.clip-path.fill-box css.properties.clip-path.stroke-box css.properties.clip-path.view-box
clipboard-custom-format	Custom formats for clipboard items	The web prefix for ClipboardItem data types (also known as MIME types) allows reading and writing ununsanitized custom data from the device clipboard.	api.ClipboardItem.type_web
clipboard-events	Clipboard events	The "copy", "cut", and "paste" events fire on elements when the user starts an action with the clipboard.	api.ClipboardEvent api.ClipboardEvent.ClipboardEvent api.ClipboardEvent.clipboardData api.Element.copy_event api.Element.cut_event api.Element.paste_event
clipboard-supports	ClipboardItem.supports()	The ClipboardItem.supports() static method checks if the browser supports writing data types such as "image/svg+xml" or other custom formats to the system clipboard.	api.ClipboardItem.supports_static
clipboard-svg	SVG clipboard items	The image/svg+xml data type (also known as the MIME type) for ClipboardItem objects represents SVG data written to or read from the clipboard.	api.ClipboardItem.type_image_svg_xml
clipboard-unsanitized-formats	Read unsanitized clipboard data	The optional formats.unsanitized parameter of the navigator.clipboard.read() method reads unsanitized text/html data from the system clipboard.	api.Clipboard.read.formats_unsanitized_parameter
closewatcher	CloseWatcher	The CloseWatcher API listens and responds to close requests on in-page components, such as modals, popovers, and sidebars.	api.CloseWatcher api.CloseWatcher.CloseWatcher api.CloseWatcher.cancel_event api.CloseWatcher.close api.CloseWatcher.close_event api.CloseWatcher.destroy api.CloseWatcher.requestClose
code	<code>	The <code> element displays its contents as a fragment of computer code.	html.elements.code
color	Color	The color CSS property sets the primary foreground color of an element, which is used for text, the default border color, and text decorations.	css.properties.color css.types.color
color-adjust	color-adjust	The color-adjust shorthand CSS property allows multiple performance related color adjustments to be set at once. Setting the print-color-adjust CSS property directly is preferred, as it is the only such adjustment so far defined.	css.properties.color-adjust
color-function	color()	The color() function picks a color from a given color space. Wide gamut color spaces like display-p3 allow showing more vibrant and saturated colors than the standard srgb color space.	css.types.color.color css.types.color.color.mixed_type_parameters
color-gamut	color-gamut media query	The color-gamut media query sets styles based on the colors a device can display.	css.at-rules.media.color-gamut
color-mix	color-mix()	The color-mix() function mixes two colors in a given color space and by a given amount. Commonly, lighter or darker variations of a color are created by mixing with white or black.	css.types.color.color-mix
color-scheme	color-scheme	The color-scheme CSS property sets which color schemes (light or dark) an element uses and may prevent automatic dark mode adjustments by the browser.	css.properties.color-scheme css.properties.color-scheme.dark css.properties.color-scheme.light css.properties.color-scheme.normal css.properties.color-scheme.only_dark css.properties.color-scheme.only_light html.elements.meta.name.color-scheme
colrv0	COLRv0	COLRv0 is a font format that supports multi-color glyphs. COLRv0 supports only solid colors.	css.at-rules.font-face.OpenType_COLRv0
colrv1	COLRv1	COLRv1 is a font format that supports multi-color glyphs. COLRv1 extends COLRv0 to support gradients, transforms, and blending modes.	css.at-rules.font-face.OpenType_COLRv1
column-breaks	Column breaks	In columnar layouts (created by the columns or column-count CSS properties), the break-after, break-before, break-inside properties control where columns start or end.	css.properties.break-after.avoid-column css.properties.break-after.column css.properties.break-after.multicol_context css.properties.break-after.multicol_context.avoid css.properties.break-after.multicol_context.avoid-column css.properties.break-after.multicol_context.column css.properties.break-before.avoid-column css.properties.break-before.column css.properties.break-before.multicol_context css.properties.break-before.multicol_context.avoid css.properties.break-before.multicol_context.avoid-column css.properties.break-before.multicol_context.column css.properties.break-inside.avoid-column css.properties.break-inside.multicol_context css.properties.break-inside.multicol_context.avoid-column
column-fill	column-fill	The column-fill CSS property sets the distribution of content across columns in a multi-column layout.	css.properties.column-fill css.properties.column-fill.auto css.properties.column-fill.balance
column-span	column-span	The column-span CSS property controls whether a child element extends across all columns of a multi-column parent.	css.properties.column-span css.properties.column-span.all css.properties.column-span.none
composed-ranges	Selection composed ranges	The window.getSelection().getComposedRanges() method returns ranges that represent the current user selection, even if the selection spans across shadow tree boundaries.	api.Selection.getComposedRanges
composition-events	Composition events	The compositionstart, compositionupdate, and compositionend events fire when an input method editor adds characters that might not be commonly available on keyboards. Examples of these characters are emoji, logograms in Asian languages, or input from speech recognition processors.	api.CompositionEvent api.CompositionEvent.CompositionEvent api.CompositionEvent.data api.Element.compositionend_event api.Element.compositionstart_event api.Element.compositionupdate_event
compression-streams	Compression streams	The CompressionStream and DecompressionStream interfaces compress and decompress data using the gzip or deflate formats.	api.CompressionStream api.CompressionStream.CompressionStream api.CompressionStream.CompressionStream.deflate api.CompressionStream.CompressionStream.deflate-raw api.CompressionStream.CompressionStream.gzip api.CompressionStream.readable api.CompressionStream.writable api.DecompressionStream api.DecompressionStream.DecompressionStream api.DecompressionStream.DecompressionStream.deflate api.DecompressionStream.DecompressionStream.deflate-raw api.DecompressionStream.DecompressionStream.gzip api.DecompressionStream.readable api.DecompressionStream.writable
compute-pressure	CPU compute pressure	The PressureObserver API monitors CPU load, allowing you to adjust workloads in response to available computing resources. Also known as the Compute Pressure API.	api.Permissions.permission_compute-pressure api.PressureObserver api.PressureObserver.PressureObserver api.PressureObserver.disconnect api.PressureObserver.knownSources_static api.PressureObserver.observe api.PressureObserver.takeRecords api.PressureObserver.unobserve api.PressureRecord api.PressureRecord.source api.PressureRecord.state api.PressureRecord.time api.PressureRecord.toJSON html.elements.iframe.allow.compute-pressure http.headers.Permissions-Policy.compute-pressure
conic-gradients	Conic gradients	The conic-gradient() and repeating-conic-gradient() CSS functions create backgrounds that progress between two or more colors around a center point.	css.types.gradient.conic-gradient css.types.gradient.conic-gradient.doubleposition css.types.gradient.repeating-conic-gradient
console	Console	The console API logs debugging messages to the browser development tools' console.	api.console api.console.assert_static api.console.clear_static api.console.countReset_static api.console.count_static api.console.debug_static api.console.dir_static api.console.dirxml_static api.console.error_static api.console.groupCollapsed_static api.console.groupEnd_static api.console.group_static api.console.info_static api.console.log_static api.console.substitution_strings api.console.table_static api.console.timeEnd_static api.console.timeLog_static api.console.time_static api.console.trace_static api.console.warn_static api.console.worker_support
constraint-validation	Constraint validation API	Methods that validate form controls before submission, such as checkValidity(), reportValidity() and setCustomValidity().	api.HTMLButtonElement.checkValidity api.HTMLButtonElement.reportValidity api.HTMLButtonElement.setCustomValidity api.HTMLButtonElement.validationMessage api.HTMLButtonElement.validity api.HTMLButtonElement.willValidate api.HTMLFieldSetElement.checkValidity api.HTMLFieldSetElement.reportValidity api.HTMLFieldSetElement.setCustomValidity api.HTMLFieldSetElement.validationMessage api.HTMLFieldSetElement.validity api.HTMLFieldSetElement.willValidate api.HTMLFormElement.checkValidity api.HTMLFormElement.reportValidity api.HTMLInputElement.checkValidity api.HTMLInputElement.reportValidity api.HTMLInputElement.setCustomValidity api.HTMLInputElement.validationMessage api.HTMLInputElement.validity api.HTMLInputElement.willValidate api.HTMLObjectElement.checkValidity api.HTMLObjectElement.reportValidity api.HTMLObjectElement.setCustomValidity api.HTMLObjectElement.validationMessage api.HTMLObjectElement.validity api.HTMLObjectElement.willValidate api.HTMLOutputElement.checkValidity api.HTMLOutputElement.reportValidity api.HTMLOutputElement.setCustomValidity api.HTMLOutputElement.validationMessage api.HTMLOutputElement.validity api.HTMLOutputElement.willValidate api.HTMLSelectElement.checkValidity api.HTMLSelectElement.reportValidity api.HTMLSelectElement.setCustomValidity api.HTMLSelectElement.validationMessage api.HTMLSelectElement.validity api.HTMLSelectElement.willValidate api.HTMLTextAreaElement.checkValidity api.HTMLTextAreaElement.reportValidity api.HTMLTextAreaElement.setCustomValidity api.HTMLTextAreaElement.validationMessage api.HTMLTextAreaElement.validity api.HTMLTextAreaElement.willValidate api.ValidityState api.ValidityState.badInput api.ValidityState.customError api.ValidityState.patternMismatch api.ValidityState.rangeOverflow api.ValidityState.rangeUnderflow api.ValidityState.stepMismatch api.ValidityState.tooLong api.ValidityState.tooShort api.ValidityState.typeMismatch api.ValidityState.valid api.ValidityState.valueMissing
constructed-stylesheets	Constructed stylesheets	The CSSStyleSheet constructor creates a new stylesheet which can be shared between a document and multiple shadow roots using adoptedStyleSheets.	api.CSSStyleSheet.CSSStyleSheet api.CSSStyleSheet.CSSStyleSheet.options_baseURL_parameter api.CSSStyleSheet.replace api.CSSStyleSheet.replaceSync api.Document.adoptedStyleSheets api.ShadowRoot.adoptedStyleSheets
contact-picker	Contact picker	The navigator.contacts API allows you to ask users to share limited details about entries in their contact list with your application.	api.ContactAddress api.ContactAddress.addressLine api.ContactAddress.city api.ContactAddress.country api.ContactAddress.dependentLocality api.ContactAddress.organization api.ContactAddress.phone api.ContactAddress.postalCode api.ContactAddress.recipient api.ContactAddress.region api.ContactAddress.sortingCode api.ContactAddress.toJSON api.ContactsManager api.ContactsManager.getProperties api.ContactsManager.select api.Navigator.contacts
contain	contain	The contain CSS property sets limits to the scope of styles, layout, and paint rendering for speed and efficiency. The none keyword value disables containment, strict is equivalent to contain: size layout style paint, and content is equivalent to contain: layout style paint.	css.properties.contain css.properties.contain.content css.properties.contain.none css.properties.contain.strict
contain-inline-size	Inline-size containment	The contain: inline-size CSS declaration prevents the element's inline dimension from being set by the element's contents. This permits the browser to avoid slower layout calculations.	css.properties.contain.inline-size
contain-intrinsic-size	contain-intrinsic-size	The contain-intrinsic-size CSS property sets the intrinsic size of an element. When using size containment, the browser will lay out the element as if it had a single child of this size.	css.properties.contain-intrinsic-block-size css.properties.contain-intrinsic-block-size.none css.properties.contain-intrinsic-height css.properties.contain-intrinsic-height.none css.properties.contain-intrinsic-inline-size css.properties.contain-intrinsic-inline-size.none css.properties.contain-intrinsic-size css.properties.contain-intrinsic-size.auto_none css.properties.contain-intrinsic-size.none css.properties.contain-intrinsic-width css.properties.contain-intrinsic-width.none
contain-layout	Layout containment	The contain: layout CSS declaration isolates the inside of an element such that it cannot affect the layout of the rest of the page or be affected by the rest of the page. This permits the browser to avoid slower layout calculations.	css.properties.contain.layout
contain-paint	Paint containment	The contain: paint CSS declaration prevents an element's descendants from being drawn outside the boundaries of the containing element, with any overflow clipped. This permits the browser to avoid slower painting calculations.	css.properties.contain.paint
contain-size	Size containment	The contain: size CSS declaration sets an element's dimensions exclusively by its height and width properties, ignoring its contents and descendants. This permits the browser to avoid slower layout calculations.	css.properties.contain.size
contain-style	Style containment	The contain: style CSS declaration permits the browser to avoid slower layout calculations by preventing modification to counter (counter-increment and counter-set) and quotation styles (content property quote values) beyond the element's descendants.	css.properties.contain.style
container-queries	Container queries	Container size queries with the @container at-rule apply styles to an element based on the dimensions of its container.	api.CSSContainerRule api.CSSContainerRule.containerName api.CSSContainerRule.containerQuery css.at-rules.container css.properties.container css.properties.container-name css.properties.container-name.none css.properties.container-type css.properties.container-type.inline-size css.properties.container-type.normal css.properties.container-type.size css.types.length.container_query_length_units
container-style-queries	Container style queries	Container style queries with the @container at-rule apply styles to an element based on the values of custom properties of its container.	css.at-rules.container.style_queries_for_custom_properties
content	Content	The content CSS property sets the content inside of an element or pseudo-element, replacing the current value. It's often used with the ::before and ::after pseudo-elements to generate cosmetic content.	css.properties.content css.properties.content.element_replacement css.properties.content.gradient css.properties.content.none css.properties.content.none_applies_to_elements css.properties.content.normal css.properties.content.url css.types.string css.types.string.unicode_escaped_characters
content-index	Content Index	The Content Index API allows developers to register their offline enabled content with the browser.	api.ContentIndex api.ContentIndex.add api.ContentIndex.delete api.ContentIndex.getAll api.ContentIndexEvent api.ContentIndexEvent.ContentIndexEvent api.ContentIndexEvent.id api.ServiceWorkerGlobalScope.contentdelete_event api.ServiceWorkerRegistration.index
content-visibility	content-visibility	The content-visibility CSS property delays rendering an element, including layout and painting, until it is needed.	api.ContentVisibilityAutoStateChangeEvent api.ContentVisibilityAutoStateChangeEvent.ContentVisibilityAutoStateChangeEvent api.ContentVisibilityAutoStateChangeEvent.skipped api.Element.contentvisibilityautostatechange_event css.properties.content-visibility css.properties.content-visibility.auto css.properties.content-visibility.hidden css.properties.content-visibility.visible
contenteditable	Contenteditable	The contenteditable global HTML attribute allows the user to edit the content of an element, such as inserting or deleting text.	api.HTMLElement.contentEditable api.HTMLElement.inputMode api.HTMLElement.isContentEditable html.global_attributes.contenteditable
contenteditable-plaintextonly	contenteditable="plaintext-only"	The contenteditable="plaintext-only" global HTML attribute allows the user to edit the content of an element, but prevents rich-text formatting.	api.HTMLElement.contentEditable.plaintext-only html.global_attributes.contenteditable.plaintext-only
context-fill-stroke	context-fill and context-stroke	The context-fill and context-stroke CSS values are used with fill and stroke in SVG <marker> or <use> elements to match a color from where they appear.	svg.elements.circle.fill.context-fill svg.elements.ellipse.fill.context-fill svg.elements.path.fill.context-fill svg.elements.polygon.fill.context-fill svg.elements.polyline.fill.context-fill svg.elements.rect.fill.context-fill svg.elements.text.fill.context-fill svg.elements.textPath.fill.context-fill svg.elements.tspan.fill.context-fill svg.global_attributes.stroke.context-stroke
controls-list	controlslist	The controlslist attribute for <audio> or <video> hides parts of the browser's built-in controls. For example, controlslist="nofullscreen" removes the button to play the video in fullscreen.	api.HTMLMediaElement.controlsList html.elements.audio.controlslist html.elements.video.controlslist
cookie-enabled	cookieEnabled	The navigator.cookieEnabled property returns a Boolean value for whether the browser accepts or ignores attempts to write cookie data.	api.Navigator.cookieEnabled
cookie-store	Cookie store	The CookieStore interface is an asynchronous and promise-based API for managing cookies. It does not rely on document and so is available to service workers as well.	api.CookieChangeEvent api.CookieChangeEvent.CookieChangeEvent api.CookieChangeEvent.changed api.CookieChangeEvent.deleted api.CookieStore api.CookieStore.change_event api.CookieStore.delete api.CookieStore.get api.CookieStore.getAll api.CookieStore.set api.CookieStoreManager api.CookieStoreManager.getSubscriptions api.CookieStoreManager.subscribe api.CookieStoreManager.unsubscribe api.ExtendableCookieChangeEvent api.ExtendableCookieChangeEvent.ExtendableCookieChangeEvent api.ExtendableCookieChangeEvent.changed api.ExtendableCookieChangeEvent.deleted api.ServiceWorkerGlobalScope.cookieStore api.ServiceWorkerGlobalScope.cookiechange_event api.ServiceWorkerRegistration.cookies api.Window.cookieStore
cookies	Cookies	The Set-Cookie HTTP header stores limited amounts of data that persist across request and response, creating shared state between the browser and server.	api.Document.cookie http.headers.Cookie http.headers.Set-Cookie http.headers.Set-Cookie.HttpOnly http.headers.Set-Cookie.Max-Age http.headers.Set-Cookie.SameSite http.headers.Set-Cookie.SameSite.Lax http.headers.Set-Cookie.SameSite.Lax_default http.headers.Set-Cookie.SameSite.None http.headers.Set-Cookie.SameSite.Strict http.headers.Set-Cookie.SameSite.none_requires_secure http.headers.Set-Cookie.SameSite.schemeful http.headers.Set-Cookie.cookie_prefixes
cors	CORS	Cross-Origin Resource Sharing is an HTTP-header based mechanism that allows a server to indicate any origins (domain, scheme, or port) other than its own from which a browser should permit loading resources. Also known as CORS.	http.headers.Access-Control-Allow-Credentials http.headers.Access-Control-Allow-Headers http.headers.Access-Control-Allow-Headers.authorization_not_covered_by_wildcard http.headers.Access-Control-Allow-Headers.wildcard http.headers.Access-Control-Allow-Methods http.headers.Access-Control-Allow-Methods.wildcard http.headers.Access-Control-Allow-Origin http.headers.Access-Control-Expose-Headers http.headers.Access-Control-Expose-Headers.wildcard http.headers.Access-Control-Max-Age http.headers.Access-Control-Request-Headers http.headers.Access-Control-Request-Method
counter-reset-reversed	Reversed counter-reset	The reversed() CSS function for counter-reset creates a counter that counts down.	css.properties.counter-reset.reversed
counter-set	counter-set	The counter-set CSS property creates (and optionally sets a value for) a counter, the numbers for a series of headings or ordered list items.	css.properties.counter-set css.properties.counter-set.list-item css.properties.counter-set.none
counter-style	@counter-style	The @counter-style CSS at-rule sets custom counter styles for list items. For example, you can use a sequence of specific symbols instead of numbers for an ordered list.	api.CSSCounterStyleRule api.CSSCounterStyleRule.additiveSymbols api.CSSCounterStyleRule.fallback api.CSSCounterStyleRule.name api.CSSCounterStyleRule.negative api.CSSCounterStyleRule.pad api.CSSCounterStyleRule.prefix api.CSSCounterStyleRule.range api.CSSCounterStyleRule.speakAs api.CSSCounterStyleRule.suffix api.CSSCounterStyleRule.symbols api.CSSCounterStyleRule.system css.at-rules.counter-style css.at-rules.counter-style.additive-symbols css.at-rules.counter-style.fallback css.at-rules.counter-style.negative css.at-rules.counter-style.pad css.at-rules.counter-style.prefix css.at-rules.counter-style.range css.at-rules.counter-style.speak-as css.at-rules.counter-style.suffix css.at-rules.counter-style.symbols css.at-rules.counter-style.system
counters	Counters (CSS)	The counter-reset and counter-increment CSS properties and the counter() and counters() functions automatically number headings or ordered list items.	css.properties.counter-increment css.properties.counter-increment.list-item css.properties.counter-increment.none css.properties.counter-reset css.properties.counter-reset.list-item css.properties.counter-reset.none css.properties.counter-reset.reset_does_not_affect_siblings css.types.counter css.types.counters
createimagebitmap	createImageBitmap	The createImageBitmap() global method creates an ImageBitmap object from a source such as an image, SVG, blob, or canvas. An ImageBitmap object represents pixel data that can be drawn to a canvas with lower latency than other types, such as ImageData.	api.ImageBitmap api.ImageBitmap.close api.ImageBitmap.height api.ImageBitmap.width api.ImageBitmapRenderingContext api.ImageBitmapRenderingContext.canvas api.ImageBitmapRenderingContext.transferFromImageBitmap api.createImageBitmap api.createImageBitmap.options_colorSpaceConversion_parameter api.createImageBitmap.options_imageOrientation_parameter api.createImageBitmap.options_premultiplyAlpha_parameter api.createImageBitmap.options_resizeHeight_parameter api.createImageBitmap.options_resizeQuality_parameter api.createImageBitmap.options_resizeWidth_parameter api.createImageBitmap.svgimageelement_as_source_image
credential-management	Credential management	The navigator.credentials API provides generic storage for authentication credentials. Other credential APIs represent specific kinds of credentials, such as password or public key credentials, that the credential management API stores.	api.Credential api.Credential.id api.Credential.isConditionalMediationAvailable_static api.Credential.type api.CredentialsContainer api.CredentialsContainer.create api.CredentialsContainer.get api.CredentialsContainer.preventSilentAccess api.CredentialsContainer.store api.Navigator.credentials
crisp-edges	crisp-edges	The image-rendering: crisp-edges CSS declaration scales images to preserve lines without blurring.	css.properties.image-rendering.crisp-edges
cross-document-view-transitions	Cross-document view transitions	The @view-transition CSS rule sets whether a document opts-in to transitions between documents in a multi-page application. Both the old and new document must opt-in for a transition to be triggered.	api.CSSViewTransitionRule api.CSSViewTransitionRule.navigation api.CSSViewTransitionRule.types css.at-rules.view-transition
cross-fade	cross-fade()	The cross-fade() CSS function generates an image by mixing two images.	css.types.image.cross-fade
csp	Content Security Policy (CSP)	Content Security Policy (CSP) helps to mitigate certain security threats, including cross-site scripting (XSS) and clickjacking attacks. It consists of a set of directives from a website to a browser, which instruct the browser to restrict the things that the site is allowed to do.	api.CSPViolationReportBody api.CSPViolationReportBody.blockedURL api.CSPViolationReportBody.columnNumber api.CSPViolationReportBody.disposition api.CSPViolationReportBody.documentURL api.CSPViolationReportBody.effectiveDirective api.CSPViolationReportBody.lineNumber api.CSPViolationReportBody.originalPolicy api.CSPViolationReportBody.referrer api.CSPViolationReportBody.sample api.CSPViolationReportBody.sourceFile api.CSPViolationReportBody.statusCode api.CSPViolationReportBody.toJSON api.Document.securitypolicyviolation_event api.Element.securitypolicyviolation_event api.HTMLElement.nonce api.HTMLIFrameElement.csp api.SecurityPolicyViolationEvent api.SecurityPolicyViolationEvent.SecurityPolicyViolationEvent api.SecurityPolicyViolationEvent.blockedURI api.SecurityPolicyViolationEvent.columnNumber api.SecurityPolicyViolationEvent.disposition api.SecurityPolicyViolationEvent.documentURI api.SecurityPolicyViolationEvent.effectiveDirective api.SecurityPolicyViolationEvent.lineNumber api.SecurityPolicyViolationEvent.originalPolicy api.SecurityPolicyViolationEvent.referrer api.SecurityPolicyViolationEvent.sample api.SecurityPolicyViolationEvent.sourceFile api.SecurityPolicyViolationEvent.statusCode api.SecurityPolicyViolationEvent.violatedDirective api.SecurityPolicyViolationEvent.worker_support api.WorkerGlobalScope.securitypolicyviolation_event html.elements.iframe.csp html.elements.meta.http-equiv.content-security-policy html.global_attributes.nonce html.global_attributes.nonce.nonce_hiding http.headers.Content-Security-Policy http.headers.Content-Security-Policy-Report-Only http.headers.Content-Security-Policy.base-uri http.headers.Content-Security-Policy.child-src http.headers.Content-Security-Policy.connect-src http.headers.Content-Security-Policy.default-src http.headers.Content-Security-Policy.font-src http.headers.Content-Security-Policy.form-action http.headers.Content-Security-Policy.frame-ancestors http.headers.Content-Security-Policy.frame-src http.headers.Content-Security-Policy.img-src http.headers.Content-Security-Policy.manifest-src http.headers.Content-Security-Policy.media-src http.headers.Content-Security-Policy.meta-element-support http.headers.Content-Security-Policy.object-src http.headers.Content-Security-Policy.report-sample http.headers.Content-Security-Policy.report-to http.headers.Content-Security-Policy.sandbox http.headers.Content-Security-Policy.script-src http.headers.Content-Security-Policy.script-src-attr http.headers.Content-Security-Policy.script-src-elem http.headers.Content-Security-Policy.script-src.external_scripts http.headers.Content-Security-Policy.script-src.wasm-unsafe-eval http.headers.Content-Security-Policy.strict-dynamic http.headers.Content-Security-Policy.style-src http.headers.Content-Security-Policy.style-src-attr http.headers.Content-Security-Policy.style-src-elem http.headers.Content-Security-Policy.unsafe-hashes http.headers.Content-Security-Policy.worker-src http.headers.Content-Security-Policy.worker_support
css-escape	CSS.escape()	The CSS.escape() static method escapes a string so that it can be used in a valid CSS selector.	api.CSS.escape_static
css-modules	CSS import attributes	Module `import … with { type: "css" } statements load CSS modules as constructable stylesheets. Also known as CSS module scripts and formerly known as import assertions.	javascript.statements.import.import_attributes.type_css
css-object-model	CSS object model	The CSS object model API reads, creates, and modifies CSS stylesheets and inline styles. Also known as CSSOM.	api.CSS api.CSSConditionRule api.CSSConditionRule.conditionText api.CSSGroupingRule api.CSSGroupingRule.cssRules api.CSSGroupingRule.deleteRule api.CSSGroupingRule.insertRule api.CSSMarginRule api.CSSMarginRule.name api.CSSMarginRule.style api.CSSMediaRule api.CSSMediaRule.media api.CSSPageDescriptors api.CSSPageDescriptors.margin api.CSSPageDescriptors.margin-bottom api.CSSPageDescriptors.margin-left api.CSSPageDescriptors.margin-right api.CSSPageDescriptors.margin-top api.CSSPageDescriptors.marginBottom api.CSSPageDescriptors.marginLeft api.CSSPageDescriptors.marginRight api.CSSPageDescriptors.marginTop api.CSSPageDescriptors.page-orientation api.CSSPageDescriptors.pageOrientation api.CSSPageDescriptors.size api.CSSPageRule api.CSSPageRule.selectorText api.CSSPageRule.style api.CSSPageRule.style.type_CSSPageDescriptors api.CSSPseudoElement api.CSSPseudoElement.element api.CSSPseudoElement.type api.CSSRule api.CSSRule.cssText api.CSSRule.parentRule api.CSSRule.parentStyleSheet api.CSSRuleList api.CSSRuleList.item api.CSSRuleList.length api.CSSStyleDeclaration api.CSSStyleDeclaration.@@iterator api.CSSStyleDeclaration.cssFloat api.CSSStyleDeclaration.cssText api.CSSStyleDeclaration.getPropertyPriority api.CSSStyleDeclaration.getPropertyValue api.CSSStyleDeclaration.item api.CSSStyleDeclaration.length api.CSSStyleDeclaration.parentRule api.CSSStyleDeclaration.removeProperty api.CSSStyleDeclaration.setProperty api.CSSStyleRule api.CSSStyleRule.selectorText api.CSSStyleRule.style api.CSSStyleSheet api.CSSStyleSheet.cssRules api.CSSStyleSheet.deleteRule api.CSSStyleSheet.insertRule api.CSSStyleSheet.insertRule.index_parameter_optional api.CSSStyleSheet.ownerRule api.Document.styleSheets api.HTMLElement.style api.HTMLLinkElement.sheet api.HTMLStyleElement.sheet api.MediaList api.MediaList.appendMedium api.MediaList.deleteMedium api.MediaList.item api.MediaList.length api.MediaList.mediaText api.MediaList.toString api.ProcessingInstruction.sheet api.ShadowRoot.styleSheets api.StyleSheet api.StyleSheet.disabled api.StyleSheet.href api.StyleSheet.media api.StyleSheet.ownerNode api.StyleSheet.parentStyleSheet api.StyleSheet.title api.StyleSheet.type api.StyleSheetList api.StyleSheetList.item api.StyleSheetList.length
css-supports	CSS.supports()	The CSS.supports() static method returns whether the browser supports a CSS declaration (given by two arguments, a property and value) or an @supports at-rule condition string.	api.CSS.supports_static api.CSS.supports_static.optional_parens
css-typed-om	CSS typed object model	The CSSStyleValue and its subclasses represent CSS values as distinct types instead of only strings. Also known as typed OM.	api.CSSImageValue api.CSSKeywordValue api.CSSKeywordValue.CSSKeywordValue api.CSSKeywordValue.value api.CSSMathClamp api.CSSMathClamp.CSSMathClamp api.CSSMathClamp.lower api.CSSMathClamp.upper api.CSSMathClamp.value api.CSSMathInvert api.CSSMathInvert.CSSMathInvert api.CSSMathInvert.value api.CSSMathMax api.CSSMathMax.CSSMathMax api.CSSMathMax.values api.CSSMathMin api.CSSMathMin.CSSMathMin api.CSSMathMin.values api.CSSMathNegate api.CSSMathNegate.CSSMathNegate api.CSSMathNegate.value api.CSSMathProduct api.CSSMathProduct.CSSMathProduct api.CSSMathProduct.values api.CSSMathSum api.CSSMathSum.CSSMathSum api.CSSMathSum.values api.CSSMathValue api.CSSMathValue.operator api.CSSMatrixComponent api.CSSMatrixComponent.CSSMatrixComponent api.CSSMatrixComponent.matrix api.CSSNumericArray api.CSSNumericArray.@@iterator api.CSSNumericArray.entries api.CSSNumericArray.forEach api.CSSNumericArray.keys api.CSSNumericArray.length api.CSSNumericArray.values api.CSSNumericValue api.CSSNumericValue.add api.CSSNumericValue.div api.CSSNumericValue.equals api.CSSNumericValue.max api.CSSNumericValue.min api.CSSNumericValue.mul api.CSSNumericValue.parse_static api.CSSNumericValue.sub api.CSSNumericValue.to api.CSSNumericValue.toSum api.CSSNumericValue.type api.CSSPerspective api.CSSPerspective.CSSPerspective api.CSSPerspective.length api.CSSRotate api.CSSRotate.CSSRotate api.CSSRotate.angle api.CSSRotate.x api.CSSRotate.y api.CSSRotate.z api.CSSScale api.CSSScale.CSSScale api.CSSScale.x api.CSSScale.y api.CSSScale.z api.CSSSkew api.CSSSkew.CSSSkew api.CSSSkew.ax api.CSSSkew.ay api.CSSSkewX api.CSSSkewX.CSSSkewX api.CSSSkewX.ax api.CSSSkewY api.CSSSkewY.CSSSkewY api.CSSSkewY.ay api.CSSStyleRule.styleMap api.CSSStyleValue api.CSSStyleValue.parseAll_static api.CSSStyleValue.parse_static api.CSSStyleValue.toString api.CSSTransformComponent api.CSSTransformComponent.is2D api.CSSTransformComponent.toMatrix api.CSSTransformComponent.toString api.CSSTransformValue api.CSSTransformValue.@@iterator api.CSSTransformValue.CSSTransformValue api.CSSTransformValue.entries api.CSSTransformValue.forEach api.CSSTransformValue.is2D api.CSSTransformValue.keys api.CSSTransformValue.length api.CSSTransformValue.toMatrix api.CSSTransformValue.values api.CSSTranslate api.CSSTranslate.CSSTranslate api.CSSTranslate.x api.CSSTranslate.y api.CSSTranslate.z api.CSSUnitValue api.CSSUnitValue.CSSUnitValue api.CSSUnitValue.unit api.CSSUnitValue.value api.CSSUnparsedValue api.CSSUnparsedValue.@@iterator api.CSSUnparsedValue.CSSUnparsedValue api.CSSUnparsedValue.entries api.CSSUnparsedValue.forEach api.CSSUnparsedValue.keys api.CSSUnparsedValue.length api.CSSUnparsedValue.values api.CSSVariableReferenceValue api.CSSVariableReferenceValue.CSSVariableReferenceValue api.CSSVariableReferenceValue.fallback api.CSSVariableReferenceValue.variable api.Element.computedStyleMap api.HTMLElement.attributeStyleMap api.StylePropertyMap api.StylePropertyMap.append api.StylePropertyMap.clear api.StylePropertyMap.delete api.StylePropertyMap.set api.StylePropertyMapReadOnly api.StylePropertyMapReadOnly.@@iterator api.StylePropertyMapReadOnly.entries api.StylePropertyMapReadOnly.forEach api.StylePropertyMapReadOnly.get api.StylePropertyMapReadOnly.getAll api.StylePropertyMapReadOnly.has api.StylePropertyMapReadOnly.keys api.StylePropertyMapReadOnly.size api.StylePropertyMapReadOnly.values
cubic-bezier-easing	cubic-bezier() easing	The cubic-bezier() CSS easing function interpolates along a smooth curve, creating animations and transitions with continuous changes in speed. The ease, ease-in, ease-out, and ease-in-out keyword values are presets for common Bézier curves.	css.types.easing-function css.types.easing-function.cubic-bezier
currentcolor	currentColor	The currentColor CSS value allows you to reuse an element's computed text color for other properties.	css.types.color.currentcolor
cursor	Cursor styles	The cursor CSS property styles the pointer, allowing you to provide hints to the user on how to interact with the hovered element.	css.properties.cursor css.properties.cursor.alias css.properties.cursor.all-scroll css.properties.cursor.auto css.properties.cursor.cell css.properties.cursor.col-resize css.properties.cursor.context-menu css.properties.cursor.copy css.properties.cursor.crosshair css.properties.cursor.default css.properties.cursor.e-resize css.properties.cursor.ew-resize css.properties.cursor.grab css.properties.cursor.grabbing css.properties.cursor.help css.properties.cursor.move css.properties.cursor.n-resize css.properties.cursor.ne-resize css.properties.cursor.nesw-resize css.properties.cursor.no-drop css.properties.cursor.none css.properties.cursor.not-allowed css.properties.cursor.ns-resize css.properties.cursor.nw-resize css.properties.cursor.nwse-resize css.properties.cursor.pointer css.properties.cursor.progress css.properties.cursor.row-resize css.properties.cursor.s-resize css.properties.cursor.se-resize css.properties.cursor.sw-resize css.properties.cursor.text css.properties.cursor.url css.properties.cursor.url_positioning_syntax css.properties.cursor.vertical-text css.properties.cursor.w-resize css.properties.cursor.wait css.properties.cursor.zoom-in css.properties.cursor.zoom-out svg.global_attributes.cursor
custom-ellipses	Custom ellipses	The text-overflow CSS property with a string value sets the string representing clipped text.	css.properties.text-overflow.string
custom-properties	Custom properties	Custom properties are CSS properties prefixed with -- that set values you can reuse with the var() function. For example, you can set a --key-color property to reuse as border-color: var(--key-color). Also known as CSS variables.	css.properties.custom-property css.properties.custom-property.var
customized-built-in-elements	Customized built-in elements	Customized built-in elements are HTML elements that extend built-in elements using the is attribute, to add new behaviors that you define.	api.CustomElementRegistry.builtin_element_support html.global_attributes.is
data	<data>	The <data> element links a given piece of content with a machine-readable translation.	api.HTMLDataElement api.HTMLDataElement.value html.elements.data html.elements.data.value
data-urls	Data URLs	Data URLs are URLs that start with the data: scheme and which directly contain data rather than point to remote resources.	http.data-url http.data-url.css_files http.data-url.html_files http.data-url.js_files http.data-url.top_level_navigation_blocked
datalist	<datalist>	The <datalist> element sets recommended values for an <input> element. Browsers may show a dropdown menu of all values or match values as the user types.	api.HTMLDataListElement api.HTMLDataListElement.options html.elements.datalist
dataset	Dataset	The dataset API attaches and accesses custom data on elements, using either the dataset property of HTMLElement or attributes prefixed with data-.	api.DOMStringMap api.HTMLElement.dataset api.MathMLElement.dataset api.SVGElement.dataset
date	Date	The Date object represents a single moment in time.	javascript.builtins.Date javascript.builtins.Date.@@toPrimitive javascript.builtins.Date.Date javascript.builtins.Date.UTC javascript.builtins.Date.UTC.optional_monthIndex javascript.builtins.Date.getDate javascript.builtins.Date.getDay javascript.builtins.Date.getFullYear javascript.builtins.Date.getHours javascript.builtins.Date.getMilliseconds javascript.builtins.Date.getMinutes javascript.builtins.Date.getMonth javascript.builtins.Date.getSeconds javascript.builtins.Date.getTime javascript.builtins.Date.getTimezoneOffset javascript.builtins.Date.getUTCDate javascript.builtins.Date.getUTCDay javascript.builtins.Date.getUTCFullYear javascript.builtins.Date.getUTCHours javascript.builtins.Date.getUTCMilliseconds javascript.builtins.Date.getUTCMinutes javascript.builtins.Date.getUTCMonth javascript.builtins.Date.getUTCSeconds javascript.builtins.Date.now javascript.builtins.Date.parse javascript.builtins.Date.parse.iso_8601 javascript.builtins.Date.setDate javascript.builtins.Date.setFullYear javascript.builtins.Date.setHours javascript.builtins.Date.setMilliseconds javascript.builtins.Date.setMinutes javascript.builtins.Date.setMonth javascript.builtins.Date.setSeconds javascript.builtins.Date.setTime javascript.builtins.Date.setUTCDate javascript.builtins.Date.setUTCFullYear javascript.builtins.Date.setUTCHours javascript.builtins.Date.setUTCMilliseconds javascript.builtins.Date.setUTCMinutes javascript.builtins.Date.setUTCMonth javascript.builtins.Date.setUTCSeconds javascript.builtins.Date.toDateString javascript.builtins.Date.toISOString javascript.builtins.Date.toJSON javascript.builtins.Date.toString javascript.builtins.Date.toTimeString javascript.builtins.Date.toUTCString javascript.builtins.Date.valueOf
declarative-shadow-dom	Declarative shadow DOM	The shadowrootmode attribute on <template> creates a shadow root without the use of JavaScript. It is a declarative alternative to the attachShadow() method.	api.HTMLTemplateElement.shadowRootMode html.elements.template.shadowrootmode
default	:default	The :default CSS pseudo-class matches the default element in a group of related form controls, such as checkboxes and radio buttons with the checked attribute.	css.selectors.default
del	<del>	The <del> element element represents a range of text that has been deleted from a document, styling text as strikethrough by default.	api.HTMLModElement api.HTMLModElement.cite api.HTMLModElement.dateTime html.elements.del html.elements.del.cite html.elements.del.datetime
description-list	Description list	The <dl>, <dt>, and <dd> HTML elements represent a list of terms and their associated descriptions. Use a description list to create glossaries or similar list of key-value pairs.	api.HTMLDListElement html.elements.dd html.elements.dl html.elements.dt
destructuring	Destructuring	The destructuring assignment syntax is a JavaScript expression that unpacks values from arrays, or properties from objects, into distinct variables.	javascript.operators.destructuring javascript.operators.destructuring.computed_property_names javascript.operators.destructuring.rest_in_arrays javascript.operators.destructuring.rest_in_objects
details	<details>	The <details> element is a disclosure widget which can be expanded to reveal additional content. When closed, only the nested <summary> element is visible.	api.HTMLDetailsElement api.HTMLDetailsElement.open api.HTMLElement.toggle_event api.HTMLElement.toggle_event.details_elements html.elements.details html.elements.details.open
details-content	::details-content	The ::details-content pseudo-element selects the expandable content of a <details> element, excluding the <summary>.	css.selectors.details-content
details-name	Mutually exclusive <details> elements	Multiple <details> elements which use the same name attribute are mutually exclusive. When one member of the group is opened, all other members are closed.	api.HTMLDetailsElement.name html.elements.details.name
device-memory	Device memory	The navigator.deviceMemory property returns the approximate amount of device memory, in gigabytes.	api.Navigator.deviceMemory api.WorkerNavigator.deviceMemory http.headers.Device-Memory
device-orientation-events	Device orientation events	The DeviceMotion and DeviceOrientation events report the movement and orientation of the browser's device in physical space. Note that coordinates can differ noticeably between platforms and devices.	api.DeviceMotionEvent api.DeviceMotionEvent.DeviceMotionEvent api.DeviceMotionEvent.acceleration api.DeviceMotionEvent.accelerationIncludingGravity api.DeviceMotionEvent.interval api.DeviceMotionEvent.requestPermission_static api.DeviceMotionEvent.rotationRate api.DeviceMotionEventAcceleration api.DeviceMotionEventAcceleration.x api.DeviceMotionEventAcceleration.y api.DeviceMotionEventAcceleration.z api.DeviceMotionEventRotationRate api.DeviceMotionEventRotationRate.alpha api.DeviceMotionEventRotationRate.beta api.DeviceMotionEventRotationRate.gamma api.DeviceOrientationEvent api.DeviceOrientationEvent.DeviceOrientationEvent api.DeviceOrientationEvent.absolute api.DeviceOrientationEvent.alpha api.DeviceOrientationEvent.beta api.DeviceOrientationEvent.gamma api.DeviceOrientationEvent.requestPermission_static api.Window.devicemotion_event api.Window.deviceorientation_event api.Window.deviceorientationabsolute_event
device-posture	Device posture	The device posture API provides information about the physical posture of a device, such as whether a foldable device is folded or unfolded.	api.DevicePosture api.DevicePosture.change_event api.DevicePosture.type api.Navigator.devicePosture css.at-rules.media.device-posture
device-queries	Device media queries	The device-aspect-ratio, device-height, and device-width media features describe physical properties of the displaying output device.	css.at-rules.media.device-aspect-ratio css.at-rules.media.device-height css.at-rules.media.device-width
devicepixelratio	devicePixelRatio	The window.devicePixelRatio read-only property returns the ratio of the size of one CSS pixel to the vertical size of one physical pixel on the current display device.	api.Window.devicePixelRatio
dfn	<dfn>	The <dfn> element marks a term to be defined, styling text as italic by default.	html.elements.dfn
dialog	<dialog>	The <dialog> HTML element represents a modal or non-modal dialog box, such as a confirmation prompt or a subwindow used to enter data.	api.HTMLDialogElement api.HTMLDialogElement.cancel_event api.HTMLDialogElement.close api.HTMLDialogElement.close_event api.HTMLDialogElement.open api.HTMLDialogElement.returnValue api.HTMLDialogElement.show api.HTMLDialogElement.showModal api.HTMLElement.beforetoggle_event.dialog_elements api.HTMLElement.toggle_event.dialog_elements html.elements.dialog html.elements.dialog.open
digital-goods	Digital goods	The window.getDigitalGoodsService API connects to stores or billing services for in-app products and subscriptions.	api.Window.getDigitalGoodsService
dir-pseudo	:dir()	The :dir() CSS functional pseudo-class matches elements by text direction, either right to left (rtl) or left to right (ltr).	css.selectors.dir
dirname	dirname	The dirname attribute of <textarea> and <input> HTML elements includes the field's writing direction as form data on submission.	api.HTMLInputElement.dirName api.HTMLTextAreaElement.dirName html.elements.input.dirname html.elements.textarea.dirname
display	Display	The display CSS property sets the display behavior of an element's box within its layout and sets the layout behavior for its child elements.	css.properties.display css.properties.display.block css.properties.display.inline css.properties.display.inline-block css.properties.display.none css.properties.display.none.option_is_hidden
display-animation	display animation	You can animate elements between display: none and any other display value or animate between content-visibility: hidden and any other content-visibility value. This also applies to transitions.	css.properties.content-visibility.is_transitionable css.properties.content-visibility.keyframe_animatable css.properties.display.is_transitionable css.properties.display.keyframe_animatable
display-contents	display: contents	The display: contents CSS declaration sets an element to display only its contents, not itself.	css.properties.display.contents css.properties.display.contents.contents_unusual css.properties.display.contents.focusable_elements
display-flow-root	display: flow-root	The display: flow-root CSS declaration sets an element as the root element of a new flow layout for its children, preventing margin collapse with sibling elements.	css.properties.display.flow-root
display-list-item	display: list-item	The display: list-item CSS declaration renders an element with the box layout of a <li> HTML element.	css.properties.display.list-item css.properties.display.list-item.legend-support
display-mode	display-mode media query	The display-mode CSS media query sets styles based on whether the web page is in fullscreen, standalone, minimal-ui, browser, or picture-in-picture mode.	css.at-rules.media.display-mode css.at-rules.media.display-mode.picture-in-picture
display-ruby	display: ruby	The display: ruby CSS declaration renders an element with the box layout of a <ruby> HTML element. Child elements may use equivalents to <ruby> internal elements such as display: ruby-base for <rb>.	css.properties.display.ruby css.properties.display.ruby-base css.properties.display.ruby-base-container css.properties.display.ruby-text css.properties.display.ruby-text-container
display-table	display: table	The display: table CSS declaration renders an element with the box layout of a <table> HTML element. Child elements may use equivalents to <table> internal elements such as display: table-row for <tr>.	css.properties.display.inline-table css.properties.display.table css.properties.display.table-caption css.properties.display.table-cell css.properties.display.table-column css.properties.display.table-column-group css.properties.display.table-footer-group css.properties.display.table-header-group css.properties.display.table-row css.properties.display.table-row-group
div	<div>	The <div> HTML element is the generic container for content.	api.HTMLDivElement html.elements.div
document-caretpositionfrompoint	document.caretPositionFromPoint()	The document.caretPositionFromPoint() method finds an insertion point, represented by a DOM node and an offset within that node, for given coordinates in the viewport.	api.CaretPosition api.CaretPosition.getClientRect api.CaretPosition.offset api.CaretPosition.offsetNode api.Document.caretPositionFromPoint
document-colors	Document colors	A document's bgColor, fgColor, alinkColor, linkColor, and vlinkColor properties get and set the background, foreground, active link, link, and visited link colors of that document.	api.Document.alinkColor api.Document.bgColor api.Document.fgColor api.Document.linkColor api.Document.vlinkColor
document-picture-in-picture	Document picture-in-picture	The document picture-in-picture API creates an always-on-top window from arbitrary HTML content.	api.DocumentPictureInPicture api.DocumentPictureInPicture.enter_event api.DocumentPictureInPicture.requestWindow api.DocumentPictureInPicture.requestWindow.option_disallowReturnToOpener api.DocumentPictureInPicture.requestWindow.option_preferInitialWindowPlacement api.DocumentPictureInPicture.window api.DocumentPictureInPictureEvent api.DocumentPictureInPictureEvent.DocumentPictureInPictureEvent api.DocumentPictureInPictureEvent.window api.Window.documentPictureInPicture
dom	DOM	The DOM (Document Object Model) API represents HTML and XML documents as trees of nodes. You can use the API to inspect and modify the structure and content of a document.	api.Attr api.Attr.localName api.Attr.name api.Attr.namespaceURI api.Attr.ownerElement api.Attr.prefix api.Attr.value api.CDATASection api.CharacterData api.CharacterData.after api.CharacterData.appendData api.CharacterData.before api.CharacterData.data api.CharacterData.deleteData api.CharacterData.insertData api.CharacterData.length api.CharacterData.nextElementSibling api.CharacterData.previousElementSibling api.CharacterData.remove api.CharacterData.replaceData api.CharacterData.replaceWith api.CharacterData.substringData api.Comment api.Comment.Comment api.DOMException api.DOMException.DOMException api.DOMException.message api.DOMException.name api.DOMImplementation api.DOMImplementation.createDocument api.DOMImplementation.createDocumentType api.DOMImplementation.createHTMLDocument api.DOMStringList api.DOMStringList.contains api.DOMStringList.item api.DOMStringList.length api.DOMTokenList api.DOMTokenList.@@iterator api.DOMTokenList.add api.DOMTokenList.add.multiple_parameters api.DOMTokenList.contains api.DOMTokenList.entries api.DOMTokenList.forEach api.DOMTokenList.item api.DOMTokenList.keys api.DOMTokenList.length api.DOMTokenList.remove api.DOMTokenList.remove.multiple_parameters api.DOMTokenList.remove_duplicates api.DOMTokenList.replace api.DOMTokenList.replace.boolean_value api.DOMTokenList.supports api.DOMTokenList.toString api.DOMTokenList.toggle api.DOMTokenList.toggle.force_parameter api.DOMTokenList.trim_whitespace api.DOMTokenList.value api.DOMTokenList.values api.Document api.Document.DOMContentLoaded_event api.Document.Document api.Document.URL api.Document.activeElement api.Document.adoptNode api.Document.append api.Document.body api.Document.characterSet api.Document.childElementCount api.Document.children api.Document.close api.Document.compatMode api.Document.contentType api.Document.createAttribute api.Document.createAttributeNS api.Document.createCDATASection api.Document.createComment api.Document.createDocumentFragment api.Document.createElement api.Document.createElement.options_parameter api.Document.createElementNS api.Document.createElementNS.options_parameter api.Document.createNodeIterator api.Document.createProcessingInstruction api.Document.createTextNode api.Document.createTreeWalker api.Document.createTreeWalker.whatToShow_filter_parameters_optional api.Document.currentScript api.Document.defaultView api.Document.designMode api.Document.dir api.Document.doctype api.Document.documentElement api.Document.documentURI api.Document.embeds api.Document.firstElementChild api.Document.forms api.Document.getElementById api.Document.getElementsByClassName api.Document.getElementsByName api.Document.getElementsByTagName api.Document.getElementsByTagNameNS api.Document.hasFocus api.Document.head api.Document.images api.Document.implementation api.Document.importNode api.Document.lastElementChild api.Document.lastModified api.Document.links api.Document.open api.Document.plugins api.Document.prepend api.Document.querySelector api.Document.querySelectorAll api.Document.readyState api.Document.readystatechange_event api.Document.referrer api.Document.replaceChildren api.Document.scripts api.Document.title api.Document.writeln api.DocumentFragment api.DocumentFragment.DocumentFragment api.DocumentFragment.append api.DocumentFragment.childElementCount api.DocumentFragment.children api.DocumentFragment.firstElementChild api.DocumentFragment.getElementById api.DocumentFragment.lastElementChild api.DocumentFragment.prepend api.DocumentFragment.querySelector api.DocumentFragment.querySelectorAll api.DocumentFragment.replaceChildren api.DocumentType api.DocumentType.after api.DocumentType.before api.DocumentType.name api.DocumentType.publicId api.DocumentType.remove api.DocumentType.replaceWith api.DocumentType.systemId api.Element api.Element.after api.Element.append api.Element.attributes api.Element.before api.Element.childElementCount api.Element.children api.Element.classList api.Element.className api.Element.clientHeight api.Element.clientLeft api.Element.clientTop api.Element.clientWidth api.Element.closest api.Element.currentCSSZoom api.Element.firstElementChild api.Element.getAttribute api.Element.getAttributeNS api.Element.getAttributeNames api.Element.getAttributeNode api.Element.getAttributeNodeNS api.Element.getBoundingClientRect api.Element.getClientRects api.Element.getElementsByClassName api.Element.getElementsByTagName api.Element.getElementsByTagName.all_elements_selector api.Element.getElementsByTagNameNS api.Element.getElementsByTagNameNS.all_elements_selector api.Element.hasAttribute api.Element.hasAttributeNS api.Element.hasAttributes api.Element.id api.Element.innerHTML api.Element.insertAdjacentElement api.Element.insertAdjacentHTML api.Element.insertAdjacentText api.Element.lastElementChild api.Element.localName api.Element.matches api.Element.namespaceURI api.Element.nextElementSibling api.Element.outerHTML api.Element.prefix api.Element.prepend api.Element.previousElementSibling api.Element.querySelector api.Element.querySelectorAll api.Element.remove api.Element.removeAttribute api.Element.removeAttributeNS api.Element.removeAttributeNode api.Element.replaceChildren api.Element.replaceWith api.Element.setAttribute api.Element.setAttributeNS api.Element.setAttributeNode api.Element.setAttributeNodeNS api.Element.tagName api.Element.toggleAttribute api.HTMLCollection api.HTMLCollection.item api.HTMLCollection.length api.HTMLCollection.namedItem api.HTMLDocument api.HTMLElement api.HTMLElement.dir api.HTMLElement.hidden api.HTMLElement.innerText api.HTMLElement.offsetHeight api.HTMLElement.offsetLeft api.HTMLElement.offsetParent api.HTMLElement.offsetTop api.HTMLElement.offsetWidth api.HTMLElement.outerText api.NamedNodeMap api.NamedNodeMap.getNamedItem api.NamedNodeMap.getNamedItemNS api.NamedNodeMap.item api.NamedNodeMap.length api.NamedNodeMap.removeNamedItem api.NamedNodeMap.removeNamedItemNS api.NamedNodeMap.setNamedItem api.NamedNodeMap.setNamedItemNS api.Node api.Node.appendChild api.Node.baseURI api.Node.childNodes api.Node.cloneNode api.Node.compareDocumentPosition api.Node.contains api.Node.firstChild api.Node.hasChildNodes api.Node.insertBefore api.Node.isDefaultNamespace api.Node.isEqualNode api.Node.isSameNode api.Node.lastChild api.Node.lookupNamespaceURI api.Node.lookupPrefix api.Node.nextSibling api.Node.nodeName api.Node.nodeType api.Node.nodeValue api.Node.normalize api.Node.ownerDocument api.Node.parentElement api.Node.parentNode api.Node.previousSibling api.Node.removeChild api.Node.replaceChild api.Node.textContent api.NodeIterator api.NodeIterator.filter api.NodeIterator.nextNode api.NodeIterator.pointerBeforeReferenceNode api.NodeIterator.previousNode api.NodeIterator.referenceNode api.NodeIterator.root api.NodeIterator.whatToShow api.NodeList api.NodeList.@@iterator api.NodeList.entries api.NodeList.forEach api.NodeList.item api.NodeList.keys api.NodeList.length api.NodeList.values api.ProcessingInstruction api.ProcessingInstruction.target api.Text api.Text.Text api.Text.splitText api.Text.wholeText api.TreeWalker api.TreeWalker.currentNode api.TreeWalker.filter api.TreeWalker.firstChild api.TreeWalker.lastChild api.TreeWalker.nextNode api.TreeWalker.nextSibling api.TreeWalker.parentNode api.TreeWalker.previousNode api.TreeWalker.previousSibling api.TreeWalker.root api.TreeWalker.whatToShow api.Window.document api.XMLDocument
dom-geometry	DOM Geometry	The DOMMatrix, DOMPoint, DOMQuad and DOMRect interfaces offer a way to represent points, rectangles, quadrilaterals and transformation matrices within JavaScript. They can be used in transformations in CSS, <canvas>, and SVG.	api.DOMMatrix api.DOMMatrix.DOMMatrix api.DOMMatrix.a api.DOMMatrix.b api.DOMMatrix.c api.DOMMatrix.d api.DOMMatrix.e api.DOMMatrix.f api.DOMMatrix.fromFloat32Array_static api.DOMMatrix.fromFloat64Array_static api.DOMMatrix.fromMatrix_static api.DOMMatrix.invertSelf api.DOMMatrix.m11 api.DOMMatrix.m12 api.DOMMatrix.m13 api.DOMMatrix.m14 api.DOMMatrix.m21 api.DOMMatrix.m22 api.DOMMatrix.m23 api.DOMMatrix.m24 api.DOMMatrix.m31 api.DOMMatrix.m32 api.DOMMatrix.m33 api.DOMMatrix.m34 api.DOMMatrix.m41 api.DOMMatrix.m42 api.DOMMatrix.m43 api.DOMMatrix.m44 api.DOMMatrix.multiplySelf api.DOMMatrix.preMultiplySelf api.DOMMatrix.rotateAxisAngleSelf api.DOMMatrix.rotateFromVectorSelf api.DOMMatrix.rotateSelf api.DOMMatrix.scale3dSelf api.DOMMatrix.scaleSelf api.DOMMatrix.setMatrixValue api.DOMMatrix.skewXSelf api.DOMMatrix.skewYSelf api.DOMMatrix.translateSelf api.DOMMatrix.worker_support api.DOMMatrixReadOnly api.DOMMatrixReadOnly.DOMMatrixReadOnly api.DOMMatrixReadOnly.a api.DOMMatrixReadOnly.b api.DOMMatrixReadOnly.c api.DOMMatrixReadOnly.d api.DOMMatrixReadOnly.e api.DOMMatrixReadOnly.f api.DOMMatrixReadOnly.flipX api.DOMMatrixReadOnly.flipY api.DOMMatrixReadOnly.fromFloat32Array_static api.DOMMatrixReadOnly.fromFloat64Array_static api.DOMMatrixReadOnly.fromMatrix_static api.DOMMatrixReadOnly.inverse api.DOMMatrixReadOnly.is2D api.DOMMatrixReadOnly.isIdentity api.DOMMatrixReadOnly.m11 api.DOMMatrixReadOnly.m12 api.DOMMatrixReadOnly.m13 api.DOMMatrixReadOnly.m14 api.DOMMatrixReadOnly.m21 api.DOMMatrixReadOnly.m22 api.DOMMatrixReadOnly.m23 api.DOMMatrixReadOnly.m24 api.DOMMatrixReadOnly.m31 api.DOMMatrixReadOnly.m32 api.DOMMatrixReadOnly.m33 api.DOMMatrixReadOnly.m34 api.DOMMatrixReadOnly.m41 api.DOMMatrixReadOnly.m42 api.DOMMatrixReadOnly.m43 api.DOMMatrixReadOnly.m44 api.DOMMatrixReadOnly.multiply api.DOMMatrixReadOnly.rotate api.DOMMatrixReadOnly.rotateAxisAngle api.DOMMatrixReadOnly.rotateFromVector api.DOMMatrixReadOnly.scale api.DOMMatrixReadOnly.scale3d api.DOMMatrixReadOnly.skewX api.DOMMatrixReadOnly.skewY api.DOMMatrixReadOnly.toFloat32Array api.DOMMatrixReadOnly.toFloat64Array api.DOMMatrixReadOnly.toJSON api.DOMMatrixReadOnly.toString api.DOMMatrixReadOnly.transformPoint api.DOMMatrixReadOnly.translate api.DOMMatrixReadOnly.worker_support api.DOMPoint api.DOMPoint.DOMPoint api.DOMPoint.fromPoint_static api.DOMPoint.w api.DOMPoint.worker_support api.DOMPoint.x api.DOMPoint.y api.DOMPoint.z api.DOMPointReadOnly api.DOMPointReadOnly.DOMPointReadOnly api.DOMPointReadOnly.fromPoint_static api.DOMPointReadOnly.matrixTransform api.DOMPointReadOnly.toJSON api.DOMPointReadOnly.w api.DOMPointReadOnly.worker_support api.DOMPointReadOnly.x api.DOMPointReadOnly.y api.DOMPointReadOnly.z api.DOMQuad api.DOMQuad.DOMQuad api.DOMQuad.fromQuad_static api.DOMQuad.fromRect_static api.DOMQuad.getBounds api.DOMQuad.p1 api.DOMQuad.p2 api.DOMQuad.p3 api.DOMQuad.p4 api.DOMQuad.toJSON api.DOMQuad.worker_support api.DOMRect api.DOMRect.DOMRect api.DOMRect.fromRect_static api.DOMRect.height api.DOMRect.width api.DOMRect.worker_support api.DOMRect.x api.DOMRect.y api.DOMRectList api.DOMRectList.item api.DOMRectList.length api.DOMRectReadOnly api.DOMRectReadOnly.DOMRectReadOnly api.DOMRectReadOnly.bottom api.DOMRectReadOnly.fromRect_static api.DOMRectReadOnly.height api.DOMRectReadOnly.left api.DOMRectReadOnly.right api.DOMRectReadOnly.toJSON api.DOMRectReadOnly.top api.DOMRectReadOnly.width api.DOMRectReadOnly.worker_support api.DOMRectReadOnly.x api.DOMRectReadOnly.y
dominant-baseline	dominant-baseline	The dominant-baseline CSS property sets the specific baseline used to align an elements's text and inline-level contents.	css.properties.dominant-baseline css.properties.dominant-baseline.alphabetic css.properties.dominant-baseline.auto css.properties.dominant-baseline.central css.properties.dominant-baseline.hanging css.properties.dominant-baseline.ideographic css.properties.dominant-baseline.mathematical css.properties.dominant-baseline.middle
domparser	DOMParser	The DOMParser API parses XML or HTML source code from a string into a DOM Document.	api.DOMParser api.DOMParser.DOMParser api.DOMParser.parseFromString api.DOMParser.parseFromString.html api.DOMParser.parseFromString.xml
download	download	The download attribute for <a> elements loads the target URL as a file to be saved, instead of navigating to it. An optional attribute value sets a default file name.	api.HTMLAnchorElement.download api.HTMLAreaElement.download api.SVGAElement.download html.elements.a.download html.elements.area.download svg.elements.a.download
draganddrop	Drag and Drop	The Drag and Drop API lets users drag and drop elements and external files such as images onto web pages. Developers can customize which elements can become draggable, the type of feedback the draggable elements produce, and the droppable elements.	api.DataTransfer api.DataTransfer.DataTransfer api.DataTransfer.clearData api.DataTransfer.dropEffect api.DataTransfer.effectAllowed api.DataTransfer.files api.DataTransfer.getData api.DataTransfer.items api.DataTransfer.setData api.DataTransfer.setDragImage api.DataTransfer.types api.DataTransferItem api.DataTransferItem.getAsFile api.DataTransferItem.getAsFileSystemHandle api.DataTransferItem.getAsString api.DataTransferItem.kind api.DataTransferItem.type api.DataTransferItemList api.DataTransferItemList.add api.DataTransferItemList.clear api.DataTransferItemList.length api.DataTransferItemList.remove api.DragEvent api.DragEvent.DragEvent api.DragEvent.dataTransfer api.HTMLElement.drag_event api.HTMLElement.dragend_event api.HTMLElement.dragenter_event api.HTMLElement.draggable api.HTMLElement.dragleave_event api.HTMLElement.dragover_event api.HTMLElement.dragstart_event api.HTMLElement.drop_event
dynamic-range	dynamic-range media query	The dynamic-range CSS media query sets styles based on whether a device can display at least standard range colors or at least high range colors. Non-visual devices will match neither.	css.at-rules.media.dynamic-range
edit-context	EditContext	The EditContext API allows you to build rich text editors that support advanced text input, such as Input Method Editor (IME) composition, an emoji picker, or other platform-specific editing UI.	api.CharacterBoundsUpdateEvent api.CharacterBoundsUpdateEvent.CharacterBoundsUpdateEvent api.CharacterBoundsUpdateEvent.rangeEnd api.CharacterBoundsUpdateEvent.rangeStart api.EditContext api.EditContext.EditContext api.EditContext.attachedElements api.EditContext.characterBounds api.EditContext.characterBoundsRangeStart api.EditContext.characterboundsupdate_event api.EditContext.compositionend_event api.EditContext.compositionstart_event api.EditContext.selectionEnd api.EditContext.selectionStart api.EditContext.text api.EditContext.textformatupdate_event api.EditContext.textupdate_event api.EditContext.updateCharacterBounds api.EditContext.updateControlBounds api.EditContext.updateSelection api.EditContext.updateSelectionBounds api.EditContext.updateText api.HTMLElement.editContext api.TextFormat api.TextFormat.TextFormat api.TextFormat.rangeEnd api.TextFormat.rangeStart api.TextFormat.underlineStyle api.TextFormat.underlineThickness api.TextFormatUpdateEvent api.TextFormatUpdateEvent.TextFormatUpdateEvent api.TextFormatUpdateEvent.getTextFormats api.TextUpdateEvent api.TextUpdateEvent.TextUpdateEvent api.TextUpdateEvent.selectionEnd api.TextUpdateEvent.selectionStart api.TextUpdateEvent.text api.TextUpdateEvent.updateRangeEnd api.TextUpdateEvent.updateRangeStart
element	element()	The element() CSS function creates a live-updating image from an HTML element that can be used as an image or background image.	css.properties.background-image.element css.types.image.element
element-from-point	document.elementFromPoint() and document.elementsFromPoint()	The document.elementFromPoint() and document.elementsFromPoint() methods find the top-most element at a given point in the viewport, or all elements at a given point in the viewport, respectively.	api.Document.elementFromPoint api.Document.elementsFromPoint
element-timing	Element timing	The element performance entry and the PerformanceElementTiming API measures the time to render elements that have the elementtiming attribute.	api.Element.elementTiming api.PerformanceElementTiming api.PerformanceElementTiming.element api.PerformanceElementTiming.id api.PerformanceElementTiming.identifier api.PerformanceElementTiming.intersectionRect api.PerformanceElementTiming.loadTime api.PerformanceElementTiming.naturalHeight api.PerformanceElementTiming.naturalWidth api.PerformanceElementTiming.renderTime api.PerformanceElementTiming.toJSON api.PerformanceElementTiming.url
em	<em>	The <em> HTML element emphasizes or stresses the content, styling text as italic by default.	html.elements.em
em-unit	em unit	The em CSS length unit is a font-relative length equal to the specified font size. In an element with a 2 inch font, 1em equals 2 inches.	css.types.length.em
embed	<embed>	The <embed> element represents an external resource such as a PDF or SVG document. It was historically used for plugins such as Shockwave Flash.	api.HTMLEmbedElement api.HTMLEmbedElement.getSVGDocument api.HTMLEmbedElement.height api.HTMLEmbedElement.src api.HTMLEmbedElement.type api.HTMLEmbedElement.width html.elements.embed html.elements.embed.height html.elements.embed.src html.elements.embed.type html.elements.embed.width
empty	:empty	The :empty CSS pseudo-class matches elements without child elements.	css.selectors.empty css.selectors.empty.matches_whitespace
encrypted-media-extensions	Encrypted media extensions	The mediaKeys property of HTMLMediaElement and the navigator.requestMediaKeySystemAccess() method control the playback of content subject to digital rights management. Also known as EME.	api.HTMLMediaElement.encrypted_event api.HTMLMediaElement.mediaKeys api.HTMLMediaElement.setMediaKeys api.HTMLMediaElement.waitingforkey_event api.MediaCapabilities.decodingInfo.configuration_keySystemConfiguration_parameter api.MediaEncryptedEvent api.MediaEncryptedEvent.MediaEncryptedEvent api.MediaEncryptedEvent.initData api.MediaEncryptedEvent.initDataType api.MediaKeyMessageEvent api.MediaKeyMessageEvent.MediaKeyMessageEvent api.MediaKeyMessageEvent.message api.MediaKeyMessageEvent.messageType api.MediaKeySession api.MediaKeySession.close api.MediaKeySession.closed api.MediaKeySession.expiration api.MediaKeySession.generateRequest api.MediaKeySession.keyStatuses api.MediaKeySession.keystatuseschange_event api.MediaKeySession.load api.MediaKeySession.message_event api.MediaKeySession.remove api.MediaKeySession.sessionId api.MediaKeySession.update api.MediaKeyStatusMap api.MediaKeyStatusMap.@@iterator api.MediaKeyStatusMap.entries api.MediaKeyStatusMap.forEach api.MediaKeyStatusMap.get api.MediaKeyStatusMap.has api.MediaKeyStatusMap.keys api.MediaKeyStatusMap.size api.MediaKeyStatusMap.values api.MediaKeySystemAccess api.MediaKeySystemAccess.createMediaKeys api.MediaKeySystemAccess.getConfiguration api.MediaKeySystemAccess.keySystem api.MediaKeys api.MediaKeys.createSession api.MediaKeys.getStatusForPolicy api.MediaKeys.setServerCertificate api.Navigator.requestMediaKeySystemAccess html.elements.iframe.allow.encrypted-media http.headers.Permissions-Policy.encrypted-media
enterkeyhint	Enterkeyhint	The enterkeyhint global HTML attribute sets the label for a virtual keyboard's Enter key. For example, enterkeyhint="search" may label the key with a magnifying glass icon.	api.HTMLElement.enterKeyHint html.global_attributes.enterkeyhint
error-cause	Error cause	The cause property of errors records the specific original cause of the error, particularly for errors that have been re-thrown.	javascript.builtins.Error.Error.options_cause_parameter javascript.builtins.Error.cause
event-timing	Event timing	The event and first-input performance entries and the PerformanceEventTiming API measures the latency of user input events, such as mouse clicks or keypresses, and the latency of the first user input. First Input Delay (FID) is a common metric for perceived responsiveness.	api.EventCounts api.EventCounts.@@iterator api.EventCounts.entries api.EventCounts.forEach api.EventCounts.get api.EventCounts.has api.EventCounts.keys api.EventCounts.size api.EventCounts.values api.Performance.eventCounts api.PerformanceEventTiming api.PerformanceEventTiming.cancelable api.PerformanceEventTiming.interactionId api.PerformanceEventTiming.processingEnd api.PerformanceEventTiming.processingStart api.PerformanceEventTiming.target api.PerformanceEventTiming.toJSON
events	Events	The Event API and the addEventListener() method on objects that receive events (event targets) represent and handle significant things happening on a page. Many APIs fire events for a wide range of situations relating to those APIs, such as an image loading, a user clicking, or a value changing.	api.CustomEvent api.CustomEvent.CustomEvent api.CustomEvent.detail api.CustomEvent.worker_support api.Event api.Event.Event api.Event.bubbles api.Event.cancelable api.Event.currentTarget api.Event.defaultPrevented api.Event.eventPhase api.Event.isTrusted api.Event.preventDefault api.Event.stopImmediatePropagation api.Event.stopPropagation api.Event.target api.Event.timeStamp api.Event.type api.EventTarget api.EventTarget.EventTarget api.EventTarget.addEventListener api.EventTarget.addEventListener.options_parameter api.EventTarget.addEventListener.options_parameter.options_capture_parameter api.EventTarget.addEventListener.options_parameter.options_once_parameter api.EventTarget.addEventListener.options_parameter.options_passive_parameter api.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_touch api.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_wheel api.EventTarget.addEventListener.options_parameter.options_signal_parameter api.EventTarget.addEventListener.useCapture_parameter_optional api.EventTarget.dispatchEvent api.EventTarget.removeEventListener api.EventTarget.removeEventListener.options_parameter api.EventTarget.removeEventListener.useCapture_parameter_optional
ex	ex unit	The ex CSS length unit is a font-relative length equal to the used x-height of the first available font. X-height is often equal to the height of the lowercase x.	css.types.length.ex
exp-functions	pow(), sqrt(), hypot(), log(), and exp()	The pow(), sqrt(), hypot(), log(), and exp() CSS functions compute various exponential functions.	css.types.exp css.types.hypot css.types.log css.types.pow css.types.sqrt
exponentiation	Exponentiation operator	The exponentiation (**) operator returns the result of raising the first operand to the power of the second operand.	javascript.operators.exponentiation javascript.operators.exponentiation_assignment
ext-blend-minmax	EXT_blend_minmax WebGL extension	The EXT_blend_minmax extension for WebGL 1.0 contexts adds two blend equations, the minimum and maximum color components of the source and destination colors.	api.EXT_blend_minmax
ext-color-buffer-float	EXT_color_buffer_float WebGL extension	The EXT_color_buffer_float extension for WebGL 2.0 contexts adds color-renderable floating point formats to renderbufferStorage().	api.EXT_color_buffer_float
ext-color-buffer-half-float	EXT_color_buffer_half_float WebGL extension	The EXT_color_buffer_half_float extension for WebGL 1.0 and 2.0 contexts renders 16-bit floating-point color buffers.	api.EXT_color_buffer_half_float
ext-disjoint-timer-query	EXT_disjoint_timer_query WebGL extension	The EXT_disjoint_timer_query extension for WebGL 1.0 contexts measures the duration of a set of GL commands, without stalling the rendering pipeline.	api.EXT_disjoint_timer_query api.EXT_disjoint_timer_query.beginQueryEXT api.EXT_disjoint_timer_query.createQueryEXT api.EXT_disjoint_timer_query.deleteQueryEXT api.EXT_disjoint_timer_query.endQueryEXT api.EXT_disjoint_timer_query.getQueryEXT api.EXT_disjoint_timer_query.getQueryObjectEXT api.EXT_disjoint_timer_query.isQueryEXT api.EXT_disjoint_timer_query.queryCounterEXT api.WebGLTimerQueryEXT
ext-float-blend	EXT_float_blend WebGL extension	The EXT_float_blend extension for WebGL 1.0 and 2.0 contexts adds 32-bit floating-point components to blending and draw buffers.	api.EXT_float_blend
ext-frag-depth	EXT_frag_depth WebGL extension	The EXT_frag_depth extension for WebGL 1.0 and 2.0 contexts adds setting the depth value of a fragment from within the fragment shader.	api.EXT_frag_depth
ext-shader-texture-lod	EXT_shader_texture_lod WebGL extension	The EXT_shader_texture_lod extension for WebGL 1.0 and 2.0 contexts adds texture functions to the OpenGL ES Shading Language such that the shader writer explicitly controls of the level of detail (LOD).	api.EXT_shader_texture_lod
ext-srgb	EXT_sRGB WebGL extension	The EXT_sRGB extension for WebGL 1.0 contexts adds sRGB support to textures and framebuffer objects.	api.EXT_sRGB
ext-texture-compression-bptc	EXT_texture_compression_bptc WebGL extension	The EXT_texture_compression_bptc extension for WebGL 1.0 and 2.0 contexts adds the BPTC compressed texture formats to compressedTexImage2D() and compressedTexSubImage2D().	api.EXT_texture_compression_bptc
ext-texture-compression-rgtc	EXT_texture_compression_rgtc WebGL extension	The EXT_texture_compression_rgtc extension for WebGL 1.0 and 2.0 contexts adds RGTC compressed texture formats. RGTC is a block-based texture compression format suited for unsigned and signed red and red-green textures. Also known as Red-Green Texture Compression.	api.EXT_texture_compression_rgtc
ext-texture-filter-anisotropic	EXT_texture_filter_anisotropic WebGL extension	The EXT_texture_filter_anisotropic extension for WebGL 1.0 and 2.0 contexts adds anisotropic filtering (AF). AF improves the quality of mipmapped texture access when viewing a textured primitive at an oblique angle.	api.EXT_texture_filter_anisotropic
ext-texture-norm16	EXT_texture_norm16c WebGL extension	The EXT_texture_norm16 extension to WebGL 2.0 contexts adds 16 bit signed normalized and unsigned normalized fixed-point texture, renderbuffer, and texture buffer formats.	api.EXT_texture_norm16
eyedropper	Eyedropper	The EyeDropper API opens an eyedropper tool, a color picker that allows users to select a color from their screen.	api.EyeDropper api.EyeDropper.EyeDropper api.EyeDropper.open api.EyeDropper.secure_context_required
fast-seek	fastSeek()	The fastSeek() method seeks an <audio> or <video> element as fast as possible, by seeking to a keyframe instead of exactly the requested time.	api.HTMLMediaElement.fastSeek
fedcm	Federated credential management	The IdentityCredential API delegates authentication to a third-party identity provider, instead of using third-party cookies. Also known as FedCM.	api.CredentialsContainer.get.identity_option api.CredentialsContainer.get.identity_option.context_option api.CredentialsContainer.get.identity_option.loginHint api.IdentityCredential api.IdentityCredential.token
federated-credentials	Federated credentials	The FederatedCredential API represents the details required to authenticate a user using a third-party identity provider. Not to be confused with federated credential management (FedCM).	api.FederatedCredential api.FederatedCredential.FederatedCredential api.FederatedCredential.iconURL api.FederatedCredential.name api.FederatedCredential.protocol api.FederatedCredential.provider
fencedframe	<fencedframe>	The <fencedframe> element embeds another HTML page into the current page in a more secure and privacy-preserving way than <iframe> elements.	api.Fence api.Fence.getNestedConfigs api.Fence.reportEvent api.Fence.setReportEventDataForAutomaticBeacons api.Fence.setReportEventDataForAutomaticBeacons.start_commit_eventType api.FencedFrameConfig api.FencedFrameConfig.setSharedStorageContext api.HTMLFencedFrameElement api.HTMLFencedFrameElement.allow api.HTMLFencedFrameElement.config api.HTMLFencedFrameElement.height api.HTMLFencedFrameElement.sandbox api.HTMLFencedFrameElement.width api.Navigator.deprecatedReplaceInURN api.Window.fence html.elements.a.target.unfencedTop html.elements.fencedframe html.elements.fencedframe.allow html.elements.fencedframe.height html.elements.fencedframe.width http.headers.Content-Security-Policy.fenced-frame-src http.headers.Sec-Fetch-Dest.fencedframe
fetch	Fetch	The fetch() method makes asynchronous HTTP requests.	api.Headers api.Headers.@@iterator api.Headers.Headers api.Headers.append api.Headers.delete api.Headers.entries api.Headers.forEach api.Headers.get api.Headers.getSetCookie api.Headers.has api.Headers.iterate_combined_duplicates api.Headers.iterate_lexicographically api.Headers.keys api.Headers.set api.Headers.values api.Request api.Request.Request api.Request.Request.cross_origin_stripped api.Request.Request.init_keepalive_parameter api.Request.Request.init_referrer_parameter api.Request.Request.request_body_readablestream api.Request.Request.response_body_readablestream api.Request.arrayBuffer api.Request.blob api.Request.body api.Request.bodyUsed api.Request.bytes api.Request.cache api.Request.cache.only-if-cached api.Request.clone api.Request.credentials api.Request.credentials.default_same-origin api.Request.destination api.Request.duplex api.Request.formData api.Request.headers api.Request.integrity api.Request.isHistoryNavigation api.Request.json api.Request.keepalive api.Request.method api.Request.mode api.Request.mode.navigate_mode api.Request.redirect api.Request.referrer api.Request.referrerPolicy api.Request.text api.Request.url api.Response api.Response.Response api.Response.Response.accept_readablestream api.Response.Response.body_parameter_optional api.Response.arrayBuffer api.Response.blob api.Response.body api.Response.body.readable_byte_stream api.Response.bodyUsed api.Response.bytes api.Response.clone api.Response.error_static api.Response.formData api.Response.headers api.Response.json api.Response.json_static api.Response.ok api.Response.redirect_static api.Response.redirected api.Response.status api.Response.statusText api.Response.text api.Response.type api.Response.url api.fetch api.fetch.authorization_removed_cross_origin api.fetch.blob_data_support api.fetch.init_keepalive_parameter api.fetch.init_referrerPolicy_parameter
fetch-metadata	Fetch metadata request headers	The Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site, and Sec-Fetch-User HTTP headers provide extra information about the way a request was made, to help servers reject certain kinds of malicious requests.	http.headers.Sec-Fetch-Dest http.headers.Sec-Fetch-Mode http.headers.Sec-Fetch-Site http.headers.Sec-Fetch-User
fetch-priority	Fetch priority	The fetch() priority option and the fetchPriority HTML attribute give hints to the browser about which requests to do before other requests of the same type.	api.HTMLImageElement.fetchPriority api.HTMLLinkElement.fetchPriority api.HTMLScriptElement.fetchPriority api.Request.Request.init_priority_parameter api.fetch.init_priority_parameter html.elements.img.fetchpriority html.elements.link.fetchpriority html.elements.script.fetchpriority http.headers.Link.fetchpriority
field-sizing	field-sizing	The field-sizing CSS property allows form controls such as <textarea> to be sized based on their content.	css.properties.field-sizing css.properties.field-sizing.content css.properties.field-sizing.fixed
fieldset	<fieldset> and <legend>	The <fieldset> and <legend> elements group several form control elements within a web form.	api.HTMLFieldSetElement api.HTMLFieldSetElement.disabled api.HTMLFieldSetElement.elements api.HTMLFieldSetElement.elements.type_HTMLCollection api.HTMLFieldSetElement.form api.HTMLFieldSetElement.name api.HTMLFieldSetElement.type api.HTMLLegendElement api.HTMLLegendElement.form html.elements.fieldset html.elements.fieldset.disabled html.elements.fieldset.form html.elements.fieldset.name html.elements.legend
figure	<figure> and <figcaption>	The <figure> and <figcaption> HTML elements represent an illustration, diagram, text, or other self-contained reference content, with an optional caption.	html.elements.figcaption html.elements.figure
file	File API	The File API represents and reads from file data and metadata. Typically, you get files through other APIs, such as the <input type="file"> element or drag-and-drop events. You may also send file data to other APIs, such as creating images or drawing on canvases.	api.Blob api.Blob.Blob api.Blob.arrayBuffer api.Blob.bytes api.Blob.size api.Blob.slice api.Blob.stream api.Blob.text api.Blob.type api.File api.File.File api.File.lastModified api.File.name api.FileList api.FileList.item api.FileList.length api.FileReader api.FileReader.FileReader api.FileReader.abort api.FileReader.abort_event api.FileReader.error api.FileReader.error_event api.FileReader.load_event api.FileReader.loadend_event api.FileReader.loadstart_event api.FileReader.progress_event api.FileReader.readAsArrayBuffer api.FileReader.readAsDataURL api.FileReader.readAsText api.FileReader.readyState api.FileReader.result api.FileReader.worker_support api.FileReaderSync api.FileReaderSync.FileReaderSync api.FileReaderSync.readAsArrayBuffer api.FileReaderSync.readAsDataURL api.FileReaderSync.readAsText api.FileReaderSync.worker_support api.URL.createObjectURL_static api.URL.revokeObjectURL_static
file-selector-button	::file-selector-button	The ::file-selector-button CSS pseudo-element selects the button of a <input type="file"> element.	css.selectors.file-selector-button
file-system-access	File system access	The showOpenFilePicker(), showDirectoryPicker(), and showSaveFilePicker() methods request access to files and directories on the user's device and returns a handle for reading and writing to them.	api.FileSystemDirectoryHandle.@@asyncIterator api.FileSystemFileHandle.createWritable api.FileSystemHandle.queryPermission api.FileSystemHandle.requestPermission api.FileSystemWritableFileStream api.FileSystemWritableFileStream.seek api.FileSystemWritableFileStream.truncate api.FileSystemWritableFileStream.write api.Window.showDirectoryPicker api.Window.showOpenFilePicker api.Window.showSaveFilePicker
filter	filter	The filter CSS property applies one or more graphic effects to an element. You can use filter functions, such as blur() and drop-shadow(), alone or combined to produce different effects.	css.properties.filter css.types.filter-function css.types.filter-function.blur css.types.filter-function.brightness css.types.filter-function.contrast css.types.filter-function.drop-shadow css.types.filter-function.grayscale css.types.filter-function.hue-rotate css.types.filter-function.invert css.types.filter-function.opacity css.types.filter-function.saturate css.types.filter-function.sepia
first-letter	::first-letter	The ::first-letter CSS pseudo-element selects the first letter in an element for styling.	css.selectors.first-letter css.selectors.first-letter.dutch_ij_digraph css.selectors.first-letter.svg_text_element
first-line	::first-line	The ::first-line CSS pseudo-element selects the first line of text in an element for styling.	css.selectors.first-line css.selectors.first-line.svg_text_element
fit-content	fit-content	The fit-content CSS keyword expands a box as needed to fit its contents until the maximum size is reached, preserving the content's preferred aspect ratio.	css.properties.height.fit-content css.properties.max-height.fit-content css.properties.max-width.fit-content css.properties.min-height.fit-content css.properties.min-width.fit-content css.properties.width.fit-content
fit-content-function	fit-content()	The fit-content() CSS function, used outside of a grid layout property, clamps a length between min-content and max-content.	css.properties.block-size.fit-content_function css.properties.height.fit-content_function css.properties.inline-size.fit-content_function css.properties.max-block-size.fit-content_function css.properties.max-height.fit-content_function css.properties.max-inline-size.fit-content_function css.properties.max-width.fit-content_function css.properties.min-block-size.fit-content_function css.properties.min-height.fit-content_function css.properties.min-inline-size.fit-content_function css.properties.min-width.fit-content_function css.properties.width.fit-content_function
fixed-positioning	Fixed positioning	The position: fixed CSS declaration removes an element from the normal flow and positions it relative to the viewport or page.	css.properties.position.fixed
flexbox	Flexbox	Flexbox is a one-dimensional layout system, which places content either horizontally or vertically, with optional wrapping.	css.properties.align-content css.properties.align-content.flex_context css.properties.align-content.flex_context.baseline css.properties.align-content.flex_context.first_baseline css.properties.align-content.flex_context.last_baseline css.properties.align-content.flex_context.safe_unsafe css.properties.align-content.flex_context.space-evenly css.properties.align-content.flex_context.start_end css.properties.align-content.flex_context.stretch css.properties.align-items css.properties.align-items.flex_context css.properties.align-items.flex_context.baseline css.properties.align-items.flex_context.first_baseline css.properties.align-items.flex_context.last_baseline css.properties.align-items.flex_context.safe_unsafe css.properties.align-items.flex_context.start_end css.properties.align-self css.properties.align-self.flex_context css.properties.align-self.flex_context.baseline css.properties.align-self.flex_context.first_baseline css.properties.align-self.flex_context.last_baseline css.properties.align-self.flex_context.safe_unsafe css.properties.align-self.flex_context.start_end css.properties.align-self.flex_context.stretch css.properties.display.flex css.properties.display.inline-flex css.properties.flex css.properties.flex-basis css.properties.flex-basis.auto css.properties.flex-basis.content css.properties.flex-basis.fit-content css.properties.flex-basis.max-content css.properties.flex-basis.min-content css.properties.flex-direction css.properties.flex-direction.column css.properties.flex-direction.column-reverse css.properties.flex-direction.row css.properties.flex-direction.row-reverse css.properties.flex-flow css.properties.flex-grow css.properties.flex-grow.less_than_zero_animate css.properties.flex-shrink css.properties.flex-wrap css.properties.flex-wrap.nowrap css.properties.flex-wrap.wrap css.properties.flex-wrap.wrap-reverse css.properties.flex.none css.properties.justify-content css.properties.justify-content.flex_context css.properties.justify-content.flex_context.left_right css.properties.justify-content.flex_context.safe_unsafe css.properties.justify-content.flex_context.space-evenly css.properties.justify-content.flex_context.start_end css.properties.justify-content.flex_context.stretch css.properties.justify-items css.properties.justify-items.flex_context css.properties.order css.properties.place-content css.properties.place-content.flex_context css.properties.place-items css.properties.place-items.flex_context css.properties.place-self css.properties.place-self.flex_context css.properties.position.absolutely_positioned_flex_children
flexbox-gap	Flexbox gap	The gap CSS property in a flexbox layout sets the size of the space between items.	css.properties.column-gap.flex_context css.properties.gap.flex_context css.properties.row-gap.flex_context
float-clear	float and clear	The float CSS property aligns an element to either side of its container, allowing text and inline elements to flow around it. The clear CSS property sets whether an element is moved below floating elements that proceed it.	css.properties.clear css.properties.clear.both css.properties.clear.left css.properties.clear.right css.properties.float css.properties.float.left css.properties.float.none css.properties.float.right
float16array	Float16Array	Float16Array is a typed array of 16-bit floating point numbers.	javascript.builtins.DataView.getFloat16 javascript.builtins.DataView.setFloat16 javascript.builtins.Float16Array javascript.builtins.Float16Array.Float16Array javascript.builtins.Math.f16round
focus-events	Focus events	Focus events, such as focus and blur, fire when an element gets or loses focus.	api.Element.blur_event api.Element.focus_event api.Element.focusin_event api.Element.focusout_event api.FocusEvent api.FocusEvent.FocusEvent api.FocusEvent.relatedTarget api.HTMLElement.blur api.HTMLElement.focus api.HTMLElement.focus.options_focusVisible_parameter api.HTMLElement.focus.options_preventScroll_parameter
focus-visible	:focus-visible	The :focus-visible CSS pseudo-class selects elements that match the :focus pseudo-class and meets the browser's criteria for visually emphasizing focused elements.	css.selectors.focus-visible
focus-within	:focus-within	The :focus-within CSS pseudo-class matches an element if the element or any of its children are focused.	css.selectors.focus-within
font-display	font-display	The font-display CSS descriptor sets whether to show a substitute font or nothing while a font face loads. The property manages what's known as a flash of unstyled text or flash of invisible text.	css.at-rules.font-face.font-display
font-face	@font-face	The @font-face CSS at-rule creates a custom font-family value. The at-rule's descriptors set the font's name, source, and various display settings.	api.CSSFontFaceRule api.CSSFontFaceRule.style css.at-rules.font-face css.at-rules.font-face.OpenType_CBDT_CBLC css.at-rules.font-face.OpenType_SBIX css.at-rules.font-face.WOFF css.at-rules.font-face.WOFF_2 css.at-rules.font-face.font-family css.at-rules.font-face.src css.at-rules.font-face.src.drop_invalid_item css.at-rules.font-face.src.format_keyword css.at-rules.font-face.src.format_variations css.at-rules.font-face.src.tech_keyword css.at-rules.font-face.unicode-range css.types.url
font-family	font-family	The font-family CSS property sets the desired font face for text, along with optional fallback font faces.	css.properties.font-family svg.global_attributes.font-family
font-family-math	Math font family	The font-family: math CSS declaration uses the browser default font face for displaying mathematical expressions.	css.properties.font-family.math
font-family-system	System font	The font-family: system-ui CSS declaration uses the operating system default font for text.	css.properties.font-family.system-ui
font-feature-settings	font-feature-settings	The font-feature-settings CSS property sets low-level OpenType feature tags for a font. When possible, use font-variant instead.	css.at-rules.font-face.font-feature-settings css.properties.font-feature-settings css.properties.font-feature-settings.normal
font-kerning	font-kerning	The font-kerning CSS property sets whether kerning data from a font is used to adjust the space between letters.	css.properties.font-kerning
font-language-override	font-language-override	The font-language-override CSS property sets which language-specific glyphs are displayed.	css.properties.font-language-override
font-loading	Font loading	The document.fonts API dynamically loads custom fonts and tracks when fonts are loading or ready to use.	api.Document.fonts api.FontFace api.FontFace.FontFace api.FontFace.display api.FontFace.family api.FontFace.featureSettings api.FontFace.load api.FontFace.loaded api.FontFace.status api.FontFace.stretch api.FontFace.style api.FontFace.unicodeRange api.FontFace.variant api.FontFace.variationSettings api.FontFace.weight api.FontFace.worker_support api.FontFaceSet api.FontFaceSet.@@iterator api.FontFaceSet.add api.FontFaceSet.check api.FontFaceSet.clear api.FontFaceSet.delete api.FontFaceSet.entries api.FontFaceSet.forEach api.FontFaceSet.has api.FontFaceSet.keys api.FontFaceSet.load api.FontFaceSet.loading_event api.FontFaceSet.loadingdone_event api.FontFaceSet.loadingerror_event api.FontFaceSet.ready api.FontFaceSet.size api.FontFaceSet.status api.FontFaceSet.values api.FontFaceSet.worker_support api.FontFaceSetLoadEvent api.FontFaceSetLoadEvent.FontFaceSetLoadEvent api.FontFaceSetLoadEvent.fontfaces api.FontFaceSetLoadEvent.worker_support api.WorkerGlobalScope.fonts
font-metric-overrides	Font metric overrides	The ascent-override, descent-override, and line-gap-override descriptors adjust the display of a font declared in an @font-face statement. This can help make fallback fonts look the same size.	api.FontFace.ascentOverride api.FontFace.descentOverride api.FontFace.lineGapOverride css.at-rules.font-face.ascent-override css.at-rules.font-face.descent-override css.at-rules.font-face.line-gap-override
font-optical-sizing	font-optical-sizing	The font-optical-sizing CSS property sets whether text rendering is optimized for viewing at different sizes.	css.properties.font-optical-sizing css.properties.font-optical-sizing.auto css.properties.font-optical-sizing.none
font-palette	font-palette	The font-palette CSS property selects a color palette from the font, optionally overriding individual colors in the @font-palette-values at-rule.	api.CSSFontPaletteValuesRule api.CSSFontPaletteValuesRule.basePalette api.CSSFontPaletteValuesRule.fontFamily api.CSSFontPaletteValuesRule.name api.CSSFontPaletteValuesRule.overrideColors css.at-rules.font-palette-values css.at-rules.font-palette-values.base-palette css.at-rules.font-palette-values.font-family css.at-rules.font-palette-values.override-colors css.properties.font-palette css.properties.font-palette.dark css.properties.font-palette.light css.properties.font-palette.normal
font-palette-animation	font-palette animation	You can animate color fonts between two font-palette values.	css.properties.font-palette.animation_computed css.properties.font-palette.palette-mix_function
font-shorthand	Font shorthand	The font CSS property shorthand sets multiple font properties, including style, weight, size, and font family.	css.properties.font css.properties.font.caption css.properties.font.icon css.properties.font.menu css.properties.font.message-box css.properties.font.small-caption css.properties.font.status-bar
font-size	font-size	The font-size CSS property sets the text height.	css.properties.font-size css.properties.font-size.rem_values css.properties.font-size.xxx-large svg.global_attributes.font-size
font-size-adjust	font-size-adjust	The font-size-adjust CSS property preserves apparent text size, regardless of the font used, by scaling fonts to the same size with respect to a specific metric, such as x-height. This can help make fallback fonts look the same size.	css.at-rules.font-face.size-adjust css.properties.font-size-adjust css.properties.font-size-adjust.from-font css.properties.font-size-adjust.none css.properties.font-size-adjust.two-values svg.global_attributes.font-size-adjust
font-stretch	font-stretch	The font-stretch CSS property selects a font face from a font family based on width, either by a keyword such as condensed or a percentage.	css.at-rules.font-face.font-stretch css.properties.font-stretch css.properties.font-stretch.percentage css.properties.font.font_stretch_support svg.global_attributes.font-stretch
font-style	font-style	The font-style CSS property sets the text style, with normal, italic, and oblique options.	css.at-rules.font-face.font-style css.properties.font-style css.properties.font-style.italic css.properties.font-style.normal css.properties.font-style.oblique-angle svg.global_attributes.font-style
font-synthesis	font-synthesis	The font-synthesis CSS shorthand property disables all font synthesis except the given kinds. To disable a specific kind of font synthesis, instead use the longhand properties such as font-synthesis-style and font-synthesis-weight.	css.properties.font-synthesis css.properties.font-synthesis.position css.properties.font-synthesis.small-caps css.properties.font-synthesis.style css.properties.font-synthesis.weight
font-synthesis-position	font-synthesis-position	The font-synthesis-position CSS property sets whether or not the browser should synthesize subscript and superscript typefaces when they're missing from the font.	css.properties.font-synthesis-position css.properties.font-synthesis-position.auto css.properties.font-synthesis-position.none
font-synthesis-small-caps	font-synthesis-small-caps	The font-synthesis-small-caps CSS property sets whether or not the browser should synthesize small caps typefaces when they're missing from the font.	css.properties.font-synthesis-small-caps css.properties.font-synthesis-small-caps.auto css.properties.font-synthesis-small-caps.none
font-synthesis-style	font-synthesis-style	The font-synthesis-style CSS property sets whether or not the browser should synthesize italic and oblique typefaces when they're missing from the font.	css.properties.font-synthesis-style css.properties.font-synthesis-style.auto css.properties.font-synthesis-style.none
font-synthesis-weight	font-synthesis-weight	The font-synthesis-weight CSS property sets whether or not the browser should synthesize bold typefaces when they're missing from the font.	css.properties.font-synthesis-weight css.properties.font-synthesis-weight.auto css.properties.font-synthesis-weight.none
font-variant	font-variant	The font-variant CSS property is a shorthand for font-variant-alternates, font-variant-caps, font-variant-east-asian, font-variant-emoji, font-variant-ligatures, font-variant-numeric, and font-variant-position.	css.at-rules.font-face.font-variant css.properties.font-variant css.properties.font-variant.css_fonts_shorthand css.properties.font-variant.greek_accented_characters css.properties.font-variant.historical-forms css.properties.font-variant.none css.properties.font-variant.normal css.properties.font-variant.sub css.properties.font-variant.super css.properties.font-variant.turkic_is css.properties.font-variant.uppercase_eszett svg.global_attributes.font-variant
font-variant-alternates	font-variant-alternates	The font-variant-alternates CSS property, along with the @font-feature-values at-rule, chooses when to use a font's alternate glyphs.	api.CSSFontFeatureValuesMap api.CSSFontFeatureValuesMap.@@iterator api.CSSFontFeatureValuesMap.clear api.CSSFontFeatureValuesMap.delete api.CSSFontFeatureValuesMap.entries api.CSSFontFeatureValuesMap.forEach api.CSSFontFeatureValuesMap.get api.CSSFontFeatureValuesMap.has api.CSSFontFeatureValuesMap.keys api.CSSFontFeatureValuesMap.set api.CSSFontFeatureValuesMap.size api.CSSFontFeatureValuesMap.values api.CSSFontFeatureValuesRule api.CSSFontFeatureValuesRule.annotation api.CSSFontFeatureValuesRule.characterVariant api.CSSFontFeatureValuesRule.fontFamily api.CSSFontFeatureValuesRule.ornaments api.CSSFontFeatureValuesRule.styleset api.CSSFontFeatureValuesRule.stylistic api.CSSFontFeatureValuesRule.swash css.at-rules.font-feature-values css.at-rules.font-feature-values.annotation css.at-rules.font-feature-values.character-variant css.at-rules.font-feature-values.historical-forms css.at-rules.font-feature-values.ornaments css.at-rules.font-feature-values.styleset css.at-rules.font-feature-values.stylistic css.at-rules.font-feature-values.swash css.properties.font-variant-alternates css.properties.font-variant-alternates.annotation css.properties.font-variant-alternates.character_variant css.properties.font-variant-alternates.historical-forms css.properties.font-variant-alternates.normal css.properties.font-variant-alternates.ornaments css.properties.font-variant-alternates.styleset css.properties.font-variant-alternates.stylistic css.properties.font-variant-alternates.swash
font-variant-caps	font-variant-caps	The font-variant-caps CSS property sets whether text should be displayed in small caps, petite caps, or with capital letters designed for titles.	css.properties.font-variant-caps css.properties.font-variant-caps.all-petite-caps css.properties.font-variant-caps.all-small-caps css.properties.font-variant-caps.normal css.properties.font-variant-caps.petite-caps css.properties.font-variant-caps.small-caps css.properties.font-variant-caps.titling-caps css.properties.font-variant-caps.unicase
font-variant-east-asian	font-variant-east-asian	The font-variant-east-asian CSS property controls glyph substitution and sizing in East Asian text.	css.properties.font-variant-east-asian css.properties.font-variant-east-asian.full-width css.properties.font-variant-east-asian.jis04 css.properties.font-variant-east-asian.jis78 css.properties.font-variant-east-asian.jis83 css.properties.font-variant-east-asian.jis90 css.properties.font-variant-east-asian.normal css.properties.font-variant-east-asian.proportional-width css.properties.font-variant-east-asian.ruby css.properties.font-variant-east-asian.simplified css.properties.font-variant-east-asian.traditional
font-variant-emoji	font-variant-emoji	The font-variant-emoji CSS property sets the default presentation for emoji characters.	css.properties.font-variant-emoji css.properties.font-variant-emoji.emoji css.properties.font-variant-emoji.normal css.properties.font-variant-emoji.text css.properties.font-variant-emoji.unicode
font-variant-ligatures	font-variant-ligatures	The font-variant-ligatures CSS property sets how characters can be visually combined for readability or stylistic reasons.	css.properties.font-variant-ligatures css.properties.font-variant-ligatures.common-ligatures css.properties.font-variant-ligatures.contextual css.properties.font-variant-ligatures.discretionary-ligatures css.properties.font-variant-ligatures.historical-ligatures css.properties.font-variant-ligatures.no-common-ligatures css.properties.font-variant-ligatures.no-contextual css.properties.font-variant-ligatures.no-discretionary-ligatures css.properties.font-variant-ligatures.no-historical-ligatures css.properties.font-variant-ligatures.none css.properties.font-variant-ligatures.normal
font-variant-numeric	font-variant-numeric	The font-variant-numeric CSS property sets how numeric characters are displayed. For example, you can align columns of numbers or use zeroes that have a slash.	css.properties.font-variant-numeric css.properties.font-variant-numeric.diagonal-fractions css.properties.font-variant-numeric.lining-nums css.properties.font-variant-numeric.normal css.properties.font-variant-numeric.oldstyle-nums css.properties.font-variant-numeric.ordinal css.properties.font-variant-numeric.proportional-nums css.properties.font-variant-numeric.slashed-zero css.properties.font-variant-numeric.stacked-fractions css.properties.font-variant-numeric.tabular-nums
font-variant-position	font-variant-position	The font-variant-position CSS property sets whether to use alternate glyphs for subscript and superscript text.	css.properties.font-variant-position css.properties.font-variant-position.normal css.properties.font-variant-position.sub css.properties.font-variant-position.super
font-variation-settings	font-variation-settings	The font-variation-settings CSS property sets an "axis of variability" on a variable font, such as weight, optical size, or a custom axis defined by the typeface designer. When possible, use other CSS font properties, such as font-weight: bold. Also known as variable fonts.	css.at-rules.font-face.font-variation-settings css.properties.font-variation-settings
font-weight	font-weight	The font-weight CSS property controls the thickness of a font. It is set explicitly with the keyword bold or a number, or relative to the inherited thickness with the keywords bolder or lighter.	css.at-rules.font-face.font-weight css.properties.font-weight css.properties.font-weight.bold css.properties.font-weight.bolder css.properties.font-weight.lighter css.properties.font-weight.normal css.properties.font-weight.number svg.global_attributes.font-weight
forced-colors	Forced colors	The forced-colors CSS @media rule detects when a user has chosen to use a forced colors mode, also known as high-contrast mode, and the forced-color-adjust CSS property sets whether forced colors apply to an element.	css.at-rules.media.forced-colors css.properties.forced-color-adjust css.properties.forced-color-adjust.auto css.properties.forced-color-adjust.none css.properties.forced-color-adjust.preserve-parent-color
form	<form>	The <form> element contains interactive controls for submitting information.	api.FormDataEvent api.FormDataEvent.FormDataEvent api.FormDataEvent.formData api.HTMLFormControlsCollection api.HTMLFormControlsCollection.namedItem api.HTMLFormElement api.HTMLFormElement.acceptCharset api.HTMLFormElement.action api.HTMLFormElement.autocomplete api.HTMLFormElement.elements api.HTMLFormElement.encoding api.HTMLFormElement.enctype api.HTMLFormElement.formdata_event api.HTMLFormElement.length api.HTMLFormElement.method api.HTMLFormElement.name api.HTMLFormElement.noValidate api.HTMLFormElement.rel api.HTMLFormElement.relList api.HTMLFormElement.requestSubmit api.HTMLFormElement.reset api.HTMLFormElement.reset_event api.HTMLFormElement.submit api.HTMLFormElement.submit_event api.HTMLFormElement.target api.SubmitEvent api.SubmitEvent.SubmitEvent api.SubmitEvent.submitter html.elements.form html.elements.form.accept-charset html.elements.form.action html.elements.form.autocomplete html.elements.form.enctype html.elements.form.method html.elements.form.name html.elements.form.novalidate html.elements.form.rel html.elements.form.target
form-associated-custom-elements	Form-associated custom elements	Custom elements may act like built-in form elements, via the the attachInternals() method of HTMLElement and the ElementInternals API.	api.ElementInternals api.ElementInternals.checkValidity api.ElementInternals.form api.ElementInternals.labels api.ElementInternals.reportValidity api.ElementInternals.setFormValue api.ElementInternals.setValidity api.ElementInternals.validationMessage api.ElementInternals.validity api.ElementInternals.willValidate api.HTMLElement.attachInternals
form-validity-pseudos	Form validity pseudo-classes	The form validity CSS pseudo-classes match <form> elements based on the constraints of a form field, such as validity (:valid, :invalid, :in-range, :out-of-range) and necessity (:optional or :required).	css.selectors.in-range css.selectors.invalid css.selectors.invalid.form css.selectors.optional css.selectors.out-of-range css.selectors.required css.selectors.valid css.selectors.valid.form
fullscreen	Fullscreen API	The fullscreen API makes a specific element fill the whole screen and hides most browser UI.	api.Document.exitFullscreen api.Document.exitFullscreen.returns_promise api.Document.fullscreenElement api.Document.fullscreenEnabled api.Document.fullscreenchange_event api.Document.fullscreenerror_event api.Element.fullscreenchange_event api.Element.fullscreenerror_event api.Element.requestFullscreen api.Element.requestFullscreen.options_navigationUI_parameter api.Element.requestFullscreen.returns_promise api.HTMLIFrameElement.allowFullscreen api.ShadowRoot.fullscreenElement css.selectors.backdrop.fullscreen css.selectors.fullscreen css.selectors.fullscreen.all_elements html.elements.iframe.allow.fullscreen html.elements.iframe.allowfullscreen http.headers.Permissions-Policy.fullscreen
functions	Functions	Functions are series of statements that can be called and return a value. The function keyword (as in function () { }) and arrow (=>) expression create functions. The JavaScript functions protocol includes default and rest parameters and binding to this.	javascript.builtins.Function javascript.builtins.Function.@@hasInstance javascript.builtins.Function.Function javascript.builtins.Function.apply javascript.builtins.Function.apply.generic_arrays_as_arguments javascript.builtins.Function.bind javascript.builtins.Function.call javascript.builtins.Function.length javascript.builtins.Function.length.configurable_true javascript.builtins.Function.name javascript.builtins.Function.name.configurable_true javascript.builtins.Function.name.inferred_names javascript.builtins.Function.toString javascript.builtins.Function.toString.toString_revision javascript.functions javascript.functions.arguments javascript.functions.arguments.@@iterator javascript.functions.arguments.length javascript.functions.arrow_functions javascript.functions.arrow_functions.trailing_comma javascript.functions.block_level_functions javascript.functions.default_parameters javascript.functions.default_parameters.destructured_parameter_with_default_value_assignment javascript.functions.default_parameters.parameters_without_defaults_after_default_parameters javascript.functions.get javascript.functions.get.computed_property_names javascript.functions.method_definitions javascript.functions.method_definitions.async_methods javascript.functions.method_definitions.generator_methods_not_constructable javascript.functions.rest_parameters javascript.functions.rest_parameters.destructuring javascript.functions.set javascript.functions.set.computed_property_names javascript.grammar.trailing_commas.trailing_commas_in_functions javascript.operators.function javascript.operators.function.trailing_comma javascript.statements.function javascript.statements.function.trailing_comma_in_parameters
gamepad	Gamepad	The navigator.getGamepads() API accesses and responds to signals from game controllers.	api.Gamepad api.Gamepad.axes api.Gamepad.buttons api.Gamepad.connected api.Gamepad.id api.Gamepad.index api.Gamepad.mapping api.Gamepad.secure_context_required api.Gamepad.timestamp api.GamepadButton api.GamepadButton.pressed api.GamepadButton.secure_context_required api.GamepadButton.value api.GamepadEvent api.GamepadEvent.GamepadEvent api.GamepadEvent.gamepad api.GamepadEvent.secure_context_required api.Navigator.getGamepads api.Navigator.getGamepads.secure_context_required api.Window.gamepadconnected_event api.Window.gamepaddisconnected_event html.elements.iframe.allow.gamepad
gamepad-haptics	Gamepad haptic feedback	The gamepad.vibrationActuator property represents a gamepad's haptics hardware, which allows you to control the vibration motors in a gamepad.	api.Gamepad.hapticActuators api.Gamepad.vibrationActuator api.GamepadHapticActuator api.GamepadHapticActuator.effects api.GamepadHapticActuator.effects.type_trigger-rumble api.GamepadHapticActuator.playEffect api.GamepadHapticActuator.playEffect.params_leftTrigger_parameter api.GamepadHapticActuator.playEffect.params_rightTrigger_parameter api.GamepadHapticActuator.playEffect.type_trigger-rumble api.GamepadHapticActuator.pulse api.GamepadHapticActuator.reset api.GamepadHapticActuator.secure_context_required
gamepad-touch	Gamepad touch buttons	The touched property of a GamepadButton object indicates whether a button capable of detecting touch is currently touched.	api.GamepadButton.touched
gamepad-vr	Gamepad VR hands and poses	The hand and pose properties of a Gamepad object represent the position in space and the hand that WebVR controllers are held in.	api.Gamepad.hand api.Gamepad.pose api.GamepadPose api.GamepadPose.angularAcceleration api.GamepadPose.angularVelocity api.GamepadPose.hasOrientation api.GamepadPose.hasPosition api.GamepadPose.linearAcceleration api.GamepadPose.linearVelocity api.GamepadPose.orientation api.GamepadPose.position api.GamepadPose.secure_context_required
generators	Generators	Generator functions (function*) create iterators that return multiple values, one after another, on-demand.	javascript.builtins.Generator javascript.builtins.Generator.next javascript.builtins.Generator.return javascript.builtins.Generator.throw javascript.builtins.GeneratorFunction javascript.builtins.GeneratorFunction.GeneratorFunction javascript.operators.generator_function javascript.operators.generator_function.trailing_comma javascript.operators.yield javascript.operators.yield_star javascript.statements.generator_function javascript.statements.generator_function.IteratorResult_object javascript.statements.generator_function.not_constructable_with_new javascript.statements.generator_function.trailing_comma_in_parameters
geolocation	Geolocation	The navigator.gelocation API requests the user's latitude, longitude, heading, and speed.	api.Geolocation api.Geolocation.clearWatch api.Geolocation.getCurrentPosition api.Geolocation.secure_context_required api.Geolocation.watchPosition api.GeolocationCoordinates api.GeolocationCoordinates.accuracy api.GeolocationCoordinates.altitude api.GeolocationCoordinates.altitudeAccuracy api.GeolocationCoordinates.heading api.GeolocationCoordinates.latitude api.GeolocationCoordinates.longitude api.GeolocationCoordinates.secure_context_required api.GeolocationCoordinates.speed api.GeolocationCoordinates.toJSON api.GeolocationPosition api.GeolocationPosition.coords api.GeolocationPosition.secure_context_required api.GeolocationPosition.timestamp api.GeolocationPosition.toJSON api.GeolocationPositionError api.GeolocationPositionError.code api.GeolocationPositionError.message api.GeolocationPositionError.secure_context_required api.Navigator.geolocation api.Navigator.geolocation.secure_context_required html.elements.iframe.allow.geolocation http.headers.Permissions-Policy.geolocation
get-computed-style	getComputedStyle()	The getComputedStyle() global method returns an CSSStyleDeclaration object that represents all CSS declarations applied to a given element.	api.Window.getComputedStyle api.Window.getComputedStyle.pseudo_element_support
gethtml	getHTML()	The getHTML() method of Element and ShadowRoot objects serializes an element's DOM to an HTML string.	api.Element.getHTML api.ShadowRoot.getHTML
globalthis	globalThis	The globalThis property accesses the global this value (and hence the global object itself) across environments.	javascript.builtins.globalThis
glyph-orientation-vertical	glyph-orientation-vertical	The glyph-orientation-vertical CSS property sets the orientation of glyphs in text rendered in a vertical writing mode.	css.properties.glyph-orientation-vertical
gpc	Global privacy control	The Sec-GPC request header indicates that the user does not consent to a website or service selling or sharing their personal information with third parties.	api.Navigator.globalPrivacyControl api.WorkerNavigator.globalPrivacyControl http.headers.Sec-GPC
gradient-interpolation	Gradient interpolation	Gradient interpolation controls how the colors between gradient stops are calculated in CSS. For example, linear-gradient(to right in oklch longer hue, red, red); calculates in the oklch color space, with the hue going all the way around the hue circle from red back to red.	css.types.gradient.conic-gradient.hue_interpolation_method css.types.gradient.conic-gradient.interpolation_color_space css.types.gradient.linear-gradient.hue_interpolation_method css.types.gradient.linear-gradient.interpolation_color_space css.types.gradient.radial-gradient.hue_interpolation_method css.types.gradient.radial-gradient.interpolation_color_space css.types.gradient.repeating-conic-gradient.hue_interpolation_method css.types.gradient.repeating-conic-gradient.interpolation_color_space css.types.gradient.repeating-linear-gradient.hue_interpolation_method css.types.gradient.repeating-linear-gradient.interpolation_color_space css.types.gradient.repeating-radial-gradient.hue_interpolation_method css.types.gradient.repeating-radial-gradient.interpolation_color_space
gradients	Gradients	The linear-gradient() and radial-gradient() CSS functions and their repeating counterparts create backgrounds that progress smoothly between multiple colors.	css.properties.background-image.gradients css.types.gradient css.types.gradient.linear-gradient css.types.gradient.linear-gradient.doubleposition css.types.gradient.linear-gradient.interpolation_hints css.types.gradient.linear-gradient.premultiplied_gradients css.types.gradient.linear-gradient.to css.types.gradient.linear-gradient.unitless_0_angle css.types.gradient.radial-gradient css.types.gradient.radial-gradient.at css.types.gradient.radial-gradient.doubleposition css.types.gradient.radial-gradient.interpolation_hints css.types.gradient.radial-gradient.premultiplied_gradients css.types.gradient.repeating-linear-gradient css.types.gradient.repeating-linear-gradient.doubleposition css.types.gradient.repeating-linear-gradient.interpolation_hints css.types.gradient.repeating-linear-gradient.to css.types.gradient.repeating-linear-gradient.unitless_0_angle css.types.gradient.repeating-radial-gradient css.types.gradient.repeating-radial-gradient.at css.types.gradient.repeating-radial-gradient.doubleposition css.types.gradient.repeating-radial-gradient.interpolation_hints css.types.image
grid	Grid	CSS grid is a two-dimensional layout system, which lays content out in rows and columns.	css.properties.align-content.grid_context css.properties.align-items.grid_context css.properties.align-items.grid_context.start_end css.properties.align-self.grid_context css.properties.column-gap.grid_context css.properties.display.grid css.properties.display.inline-grid css.properties.gap css.properties.gap.grid_context css.properties.gap.grid_context.calc_values css.properties.gap.grid_context.percentage_values css.properties.grid css.properties.grid-area css.properties.grid-auto-columns css.properties.grid-auto-flow css.properties.grid-auto-flow.column css.properties.grid-auto-flow.dense css.properties.grid-auto-flow.row css.properties.grid-auto-rows css.properties.grid-column css.properties.grid-column-end css.properties.grid-column-start css.properties.grid-row css.properties.grid-row-end css.properties.grid-row-start css.properties.grid-template css.properties.grid-template-areas css.properties.grid-template-areas.none css.properties.grid-template-columns css.properties.grid-template-columns.auto css.properties.grid-template-columns.fit-content css.properties.grid-template-columns.max-content css.properties.grid-template-columns.min-content css.properties.grid-template-columns.minmax css.properties.grid-template-columns.none css.properties.grid-template-columns.repeat css.properties.grid-template-rows css.properties.grid-template-rows.auto css.properties.grid-template-rows.fit-content css.properties.grid-template-rows.max-content css.properties.grid-template-rows.min-content css.properties.grid-template-rows.minmax css.properties.grid-template-rows.none css.properties.grid-template-rows.repeat css.properties.grid-template.none css.properties.justify-content.grid_context css.properties.justify-items.grid_context css.properties.justify-self css.properties.justify-self.grid_context css.properties.place-content.grid_context css.properties.place-items.grid_context css.properties.place-self.grid_context css.properties.row-gap css.properties.row-gap.grid_context css.types.flex
grid-animation	Grid animation	Grid animation allows you to animate the grid-template-columns and grid-template-rows CSS properties.	css.properties.grid-template-columns.animation css.properties.grid-template-rows.animation
gyroscope	Gyroscope	The Gyroscope API reads the angular velocity of a device in three dimensions.	api.Gyroscope api.Gyroscope.Gyroscope api.Gyroscope.x api.Gyroscope.y api.Gyroscope.z api.Permissions.permission_gyroscope html.elements.iframe.allow.gyroscope http.headers.Permissions-Policy.gyroscope
hanging-punctuation	Hanging punctuation	The hanging-punctuation CSS property puts punctuation characters outside of the box to align the text with the rest of the document.	css.properties.hanging-punctuation css.properties.hanging-punctuation.allow-end css.properties.hanging-punctuation.first css.properties.hanging-punctuation.last css.properties.hanging-punctuation.none
hardware-concurrency	hardwareConcurrency	The navigator.hardwareConcurrency read-only property returns the number of logical processors available to run threads on the user's computer.	api.Navigator.hardwareConcurrency api.WorkerNavigator.hardwareConcurrency
has	:has()	The :has() CSS functional pseudo-class matches an element if any of the selectors passed as parameters would match at least one element.	css.selectors.has
has-slotted	:has-slotted	The :has-slotted CSS pseudo-class matches <slot> elements where the fallback content is not shown. The pseudo-class matches any slotted content, including white space, text nodes, or elements.	css.selectors.has-slotted
hashbang-comments	Hashbang comments	The #! comment at the absolute start of a script or module is treated as a normal comment and is ignored by the JavaScript engine.	javascript.grammar.hashbang_comments
hashchange	hashchange	The hashchange event fires when the URL fragment identifier (the part of the URL starting with #) of the current page has changed.	api.HashChangeEvent api.HashChangeEvent.HashChangeEvent api.HashChangeEvent.newURL api.HashChangeEvent.oldURL api.Window.hashchange_event
head	<head>	The <head> element contains machine-readable information (metadata) about the document, such as the title, <script> and <style> elements, and <meta> elements.	api.HTMLHeadElement html.elements.head
header-footer	<header> and <footer>	The <header> and <footer> HTML elements represent content that precedes and follows the main page content, respectively.	html.elements.footer html.elements.header
headings	<h1> through <h6>	The <h1> through <h6> HTML elements represent six levels of section headings, in order of decreasing importance.	api.HTMLHeadingElement html.elements.h1 html.elements.h2 html.elements.h3 html.elements.h4 html.elements.h5 html.elements.h6
hgroup	<hgroup>	The <hgroup> element represents a heading and related content.	html.elements.hgroup
hidden-until-found	hidden="until-found"	The hidden="until-found" attribute hides an element until it is found using the browser's find-in-page search or it is directly navigated to by following a URL fragment.	api.Element.beforematch_event html.global_attributes.hidden.until-found
highlight	Custom highlights	Custom highlights style arbitrary text ranges, without adding extra elements to the DOM.	api.CSS.highlights_static api.Highlight api.Highlight.@@iterator api.Highlight.Highlight api.Highlight.add api.Highlight.clear api.Highlight.delete api.Highlight.entries api.Highlight.forEach api.Highlight.has api.Highlight.keys api.Highlight.priority api.Highlight.size api.Highlight.type api.Highlight.values api.HighlightRegistry api.HighlightRegistry.@@iterator api.HighlightRegistry.clear api.HighlightRegistry.delete api.HighlightRegistry.entries api.HighlightRegistry.forEach api.HighlightRegistry.get api.HighlightRegistry.has api.HighlightRegistry.keys api.HighlightRegistry.set api.HighlightRegistry.size api.HighlightRegistry.values css.selectors.highlight
history	History	The window.history API manipulates the browser session history, from navigations to state management, in the tab or frame that the current page is loaded in.	api.History api.History.back api.History.forward api.History.go api.History.length api.History.pushState api.History.replaceState api.History.scrollRestoration api.History.state api.PopStateEvent api.PopStateEvent.PopStateEvent api.PopStateEvent.hasUAVisualTransition api.PopStateEvent.state api.Window.history api.Window.popstate_event
host	Host	The :host CSS pseudo-class selects the containing element of the shadow tree in which it is used. The :host() CSS pseudo-class selects the that element only if it matches the provided selector.	css.selectors.host css.selectors.hostfunction
host-context	host-context	The :host-context() CSS pseudo-class selects the containing element of the shadow tree in which it is used if that element or an ancestor matches the provided selector.	css.selectors.host-context
hr	<hr>	The <hr> element represents a thematic break between paragraphs, often shown as a horizontal rule.	api.HTMLHRElement html.elements.hr
hsl	HSL	The hsl() and hsla() CSS functions pick colors using hue, saturation, lightness, and alpha (transparency) channels.	css.types.color.hsl css.types.color.hsl.alpha_parameter css.types.color.hsl.mixed_type_parameters css.types.color.hsl.space_separated_parameters
hsts	HTTP Strict Transport Security	The Strict-Transport-Security HTTP response header informs browsers that the site should only be accessed using HTTPS, and that any future attempts to access it using HTTP should automatically be converted to HTTPS. Also known as HSTS.	http.headers.Strict-Transport-Security
html	<html>	The <html> element represents the top-level of an HTML document and is referred to as the root element.	api.HTMLHtmlElement html.elements.html
html-media-capture	HTML media capture	The capture HTML attribute for <input type="file"> elements allows the user to capture media using the device's camera or microphone.	api.HTMLInputElement.capture html.elements.input.capture
http-authentication	HTTP authentication	The Authorization and WWW-Authenticate headers authenticate a user with a server.	http.headers.Authorization http.headers.Authorization.Basic http.headers.Authorization.Digest http.headers.Authorization.Digest.SHA-256 http.headers.Authorization.Digest.md5 http.headers.Authorization.NTLM http.headers.Authorization.Negotiate http.headers.Authorization.authorization_removed_cross_origin http.headers.WWW-Authenticate http.headers.WWW-Authenticate.Basic http.headers.WWW-Authenticate.Digest http.headers.WWW-Authenticate.Digest.SHA-256 http.headers.WWW-Authenticate.Digest.md5 http.headers.WWW-Authenticate.NTLM http.headers.WWW-Authenticate.Negotiate
http11	HTTP/1.1	HTTP/1.1 is a network protocol used by browsers and servers. It has been superseded by HTTP/2 and HTTP/3.	http.headers.Accept http.headers.Accept-Encoding http.headers.Accept-Language http.headers.Accept-Ranges http.headers.Age http.headers.Cache-Control http.headers.Connection http.headers.Content-Disposition http.headers.Content-Encoding http.headers.Content-Language http.headers.Content-Length http.headers.Content-Location http.headers.Content-Range http.headers.Content-Type http.headers.Date http.headers.ETag http.headers.Expires http.headers.From http.headers.Host http.headers.If-Match http.headers.If-Modified-Since http.headers.If-None-Match http.headers.If-Range http.headers.If-Unmodified-Since http.headers.Keep-Alive http.headers.Last-Modified http.headers.Location http.headers.Origin http.headers.Proxy-Authenticate http.headers.Range http.headers.Referer http.headers.Server http.headers.TE http.headers.Trailer http.headers.Transfer-Encoding http.headers.User-Agent http.headers.Vary http.headers.Via http.methods.CONNECT http.methods.DELETE http.methods.GET http.methods.HEAD http.methods.OPTIONS http.methods.POST http.methods.PUT
http2	HTTP/2	The HTTP/2 protocol is a major revision of the HTTP network protocol, providing improved performance and efficiency by using a single TCP connection to send multiple streams of data at once.
http3	HTTP/3	HTTP/3 is a major revision of the HTTP network protocol, providing improved performance and efficiency by using QUIC as the underlying transport protocol.
hwb	HWB	The hwb() CSS function picks colors using hue, whiteness, and blackness channels.	css.types.color.hwb css.types.color.hwb.mixed_type_parameters
hyphenate-character	Hyphenate character	The hyphenate-character CSS property sets the character or string to use at the end of a line before a line break.	css.properties.hyphenate-character css.properties.hyphenate-character.auto
hyphenate-limit-chars	Hyphenate limit chars	The hyphenate-limit-chars CSS property sets the number of characters in a word before it is hyphenated and the minimum number of characters on either side of the hyphen.	css.properties.hyphenate-limit-chars css.properties.hyphenate-limit-chars.auto
hyphens	Hyphenation	The hyphens CSS property controls when long words are broken by line wrapping. Although called hyphens, the property applies to word-splitting behavior across languages, such as customary spelling changes or the use of other characters. Support for non-English languages varies significantly.	css.properties.hyphens css.properties.hyphens.auto css.properties.hyphens.language_afrikaans css.properties.hyphens.language_albanian css.properties.hyphens.language_amharic css.properties.hyphens.language_armenian css.properties.hyphens.language_assamese css.properties.hyphens.language_basque css.properties.hyphens.language_belarusian css.properties.hyphens.language_bengali css.properties.hyphens.language_bosnian css.properties.hyphens.language_bulgarian css.properties.hyphens.language_catalan css.properties.hyphens.language_croatian css.properties.hyphens.language_cyrillic_mongolian css.properties.hyphens.language_czech css.properties.hyphens.language_danish css.properties.hyphens.language_dutch css.properties.hyphens.language_english css.properties.hyphens.language_esperanto css.properties.hyphens.language_estonian css.properties.hyphens.language_ethiopic_script_mul css.properties.hyphens.language_ethiopic_script_und css.properties.hyphens.language_finnish css.properties.hyphens.language_french css.properties.hyphens.language_galician css.properties.hyphens.language_georgian css.properties.hyphens.language_german_reformed_orthography css.properties.hyphens.language_german_swiss_orthography css.properties.hyphens.language_german_traditional_orthography css.properties.hyphens.language_gujarati css.properties.hyphens.language_hindi css.properties.hyphens.language_hungarian css.properties.hyphens.language_icelandic css.properties.hyphens.language_interlingua css.properties.hyphens.language_irish css.properties.hyphens.language_italian css.properties.hyphens.language_kannada css.properties.hyphens.language_kurmanji css.properties.hyphens.language_latin css.properties.hyphens.language_latvian css.properties.hyphens.language_lithuanian css.properties.hyphens.language_malayalam css.properties.hyphens.language_marathi css.properties.hyphens.language_modern_greek css.properties.hyphens.language_mongolian css.properties.hyphens.language_norwegian_nn css.properties.hyphens.language_norwegian_no css.properties.hyphens.language_old_slavonic css.properties.hyphens.language_oriya css.properties.hyphens.language_polish css.properties.hyphens.language_portuguese css.properties.hyphens.language_punjabi css.properties.hyphens.language_russian css.properties.hyphens.language_slovak css.properties.hyphens.language_slovenian css.properties.hyphens.language_spanish css.properties.hyphens.language_swedish css.properties.hyphens.language_tamil css.properties.hyphens.language_telugu css.properties.hyphens.language_turkish css.properties.hyphens.language_turkmen css.properties.hyphens.language_ukrainian css.properties.hyphens.language_upper_sorbian css.properties.hyphens.language_welsh
i	<i>	The <i> HTML element identifies idiomatic content, styling text as italic by default.	html.elements.i
ic	ic unit	The ic CSS length unit corresponds to the width of CJK ideographic characters.	css.types.length.ic
idle-detection	Idle detection	The IdleDetector API is used to notify a webpage of the user's idle, active, and locked state.	api.IdleDetector api.IdleDetector.IdleDetector api.IdleDetector.change_event api.IdleDetector.requestPermission_static api.IdleDetector.screenState api.IdleDetector.start api.IdleDetector.userState html.elements.iframe.allow.idle-detection http.headers.Permissions-Policy.idle-detection
iframe	<iframe>	The <iframe> element embeds another HTML page into the current page.	api.HTMLIFrameElement api.HTMLIFrameElement.allow api.HTMLIFrameElement.contentDocument api.HTMLIFrameElement.contentWindow api.HTMLIFrameElement.getSVGDocument api.HTMLIFrameElement.height api.HTMLIFrameElement.name api.HTMLIFrameElement.src api.HTMLIFrameElement.width html.elements.iframe html.elements.iframe.allow html.elements.iframe.height html.elements.iframe.name html.elements.iframe.src html.elements.iframe.width
iframe-credentialless	Credentialless iframes	The credentialless attribute for the <iframe> HTML element loads third-party content in an ephemeral context and does not send any credentials such as cookies. When using cross-origin isolation, this allows you to embed content that does not send Cross-Origin-Embedder-Policy headers.	api.HTMLIFrameElement.credentialless api.Window.credentialless html.elements.iframe.credentialless
iframe-sandbox	Sandboxed iframes	The sandbox attribute for the <iframe> HTML element sets many security restrictions on the iframe, such as preventing form submissions or opening modal dialogs. Optional allow- values relax specific restrictions.	api.HTMLIFrameElement.sandbox html.elements.iframe.sandbox html.elements.iframe.sandbox.allow-downloads html.elements.iframe.sandbox.allow-forms html.elements.iframe.sandbox.allow-modals html.elements.iframe.sandbox.allow-popups html.elements.iframe.sandbox.allow-popups-to-escape-sandbox html.elements.iframe.sandbox.allow-same-origin html.elements.iframe.sandbox.allow-scripts html.elements.iframe.sandbox.allow-top-navigation html.elements.iframe.sandbox.allow-top-navigation-by-user-activation html.elements.iframe.sandbox.allow-top-navigation-to-custom-protocols
iframe-srcdoc	srcdoc	The srcdoc attribute for the <iframe> HTML element sets a string of HTML to embed in the document. The value of srcdoc overrides loading a document from the src attribute.	api.HTMLIFrameElement.srcdoc html.elements.iframe.srcdoc
image-function	image()	The image() CSS function creates an image similar to url() but with additional functionality. It can create a solid color as an image, provide a fallback from an image URL to a solid color, or clip a sprite image using media fragments. Not to be confused with the Image() constructor.
image-maps	Image maps	The <area> and <map> elements define a clickable area on an image.	api.HTMLAreaElement api.HTMLAreaElement.alt api.HTMLAreaElement.coords api.HTMLAreaElement.hash api.HTMLAreaElement.host api.HTMLAreaElement.hostname api.HTMLAreaElement.href api.HTMLAreaElement.origin api.HTMLAreaElement.password api.HTMLAreaElement.pathname api.HTMLAreaElement.port api.HTMLAreaElement.protocol api.HTMLAreaElement.rel api.HTMLAreaElement.relList api.HTMLAreaElement.search api.HTMLAreaElement.shape api.HTMLAreaElement.target api.HTMLAreaElement.toString api.HTMLAreaElement.username api.HTMLImageElement.isMap api.HTMLImageElement.useMap api.HTMLMapElement api.HTMLMapElement.areas api.HTMLMapElement.name html.elements.area html.elements.area.alt html.elements.area.coords html.elements.area.href html.elements.area.implicit_noopener html.elements.area.rel html.elements.area.rel.noopener html.elements.area.rel.noreferrer html.elements.area.shape html.elements.area.target html.elements.img.ismap html.elements.img.usemap html.elements.map html.elements.map.name
image-orientation	image-orientation	The image-orientation CSS property corrects the rotation of an image using the image's metadata, such as EXIF.	css.properties.image-orientation css.properties.image-orientation.from-image css.properties.image-orientation.none
image-rendering	image-rendering	The image-rendering CSS property sets how images are scaled, retaining smoothness for photos, or hard edges for pixel art and QR codes.	css.properties.image-rendering css.properties.image-rendering.auto css.properties.image-rendering.pixelated
image-set	image-set()	The image-set() CSS function provides a set of images at different resolutions or pixel densities, which the browser can pick from, depending on the device capabilities.	css.properties.background-image.image-set css.properties.content.image-set css.types.image.image-set
ime-mode	ime-mode	The ime-mode CSS property sets the state of the input method editor for text fields.	css.properties.ime-mode
img	<img>	The <img> element adds an image into the document.	api.HTMLImageElement api.HTMLImageElement.Image api.HTMLImageElement.alt api.HTMLImageElement.complete api.HTMLImageElement.crossOrigin api.HTMLImageElement.decode api.HTMLImageElement.decoding api.HTMLImageElement.height api.HTMLImageElement.naturalHeight api.HTMLImageElement.naturalWidth api.HTMLImageElement.src api.HTMLImageElement.width api.HTMLImageElement.x api.HTMLImageElement.y html.elements.img html.elements.img.alt html.elements.img.crossorigin html.elements.img.decoding html.elements.img.height html.elements.img.src html.elements.img.width
import	@import	The @import CSS at-rule loads styles from another stylesheet.	api.CSSImportRule api.CSSImportRule.href api.CSSImportRule.media api.CSSImportRule.styleSheet css.at-rules.import
import-maps	Import maps	A <script type="importmap"> HTML element provides an import map as a JSON string. An import map controls how the browser should resolve module specifiers when importing JavaScript modules.	html.elements.script.type.importmap
indeterminate	:indeterminate	The :indeterminate CSS pseudo-class selects any form element whose state is indeterminate, such as checkboxes that have been set to an indeterminate state with JavaScript, or radio buttons which are members of a group in which all radio buttons are unchecked.	css.selectors.indeterminate css.selectors.indeterminate.checkbox css.selectors.indeterminate.progress css.selectors.indeterminate.radio
indexeddb	IndexedDB	The IndexedDB API is a local storage transactional object database.	api.IDBCursor api.IDBCursor.advance api.IDBCursor.continue api.IDBCursor.continuePrimaryKey api.IDBCursor.delete api.IDBCursor.direction api.IDBCursor.key api.IDBCursor.key.binary_keys api.IDBCursor.primaryKey api.IDBCursor.request api.IDBCursor.source api.IDBCursor.update api.IDBCursor.worker_support api.IDBCursorWithValue api.IDBCursorWithValue.value api.IDBCursorWithValue.worker_support api.IDBDatabase api.IDBDatabase.close api.IDBDatabase.close_event api.IDBDatabase.createObjectStore api.IDBDatabase.deleteObjectStore api.IDBDatabase.name api.IDBDatabase.objectStoreNames api.IDBDatabase.transaction api.IDBDatabase.version api.IDBDatabase.versionchange_event api.IDBDatabase.worker_support api.IDBFactory api.IDBFactory.cmp api.IDBFactory.databases api.IDBFactory.deleteDatabase api.IDBFactory.open api.IDBFactory.worker_support api.IDBIndex api.IDBIndex.count api.IDBIndex.get api.IDBIndex.getAll api.IDBIndex.getAllKeys api.IDBIndex.getKey api.IDBIndex.keyPath api.IDBIndex.multiEntry api.IDBIndex.name api.IDBIndex.name.renaming_through_name_setter api.IDBIndex.objectStore api.IDBIndex.openCursor api.IDBIndex.openKeyCursor api.IDBIndex.unique api.IDBIndex.worker_support api.IDBKeyRange api.IDBKeyRange.bound_static api.IDBKeyRange.includes api.IDBKeyRange.lower api.IDBKeyRange.lowerBound_static api.IDBKeyRange.lowerOpen api.IDBKeyRange.only_static api.IDBKeyRange.upper api.IDBKeyRange.upperBound_static api.IDBKeyRange.upperOpen api.IDBKeyRange.worker_support api.IDBObjectStore api.IDBObjectStore.add api.IDBObjectStore.autoIncrement api.IDBObjectStore.clear api.IDBObjectStore.count api.IDBObjectStore.createIndex api.IDBObjectStore.delete api.IDBObjectStore.deleteIndex api.IDBObjectStore.get api.IDBObjectStore.getAll api.IDBObjectStore.getAllKeys api.IDBObjectStore.getKey api.IDBObjectStore.index api.IDBObjectStore.indexNames api.IDBObjectStore.keyPath api.IDBObjectStore.name api.IDBObjectStore.name.renaming_through_name_setter api.IDBObjectStore.openCursor api.IDBObjectStore.openKeyCursor api.IDBObjectStore.put api.IDBObjectStore.transaction api.IDBObjectStore.worker_support api.IDBOpenDBRequest api.IDBOpenDBRequest.blocked_event api.IDBOpenDBRequest.upgradeneeded_event api.IDBOpenDBRequest.worker_support api.IDBRequest api.IDBRequest.error api.IDBRequest.error.DOMException api.IDBRequest.error_event api.IDBRequest.readyState api.IDBRequest.result api.IDBRequest.source api.IDBRequest.success_event api.IDBRequest.transaction api.IDBRequest.worker_support api.IDBTransaction api.IDBTransaction.abort api.IDBTransaction.abort_event api.IDBTransaction.commit api.IDBTransaction.complete_event api.IDBTransaction.db api.IDBTransaction.durability api.IDBTransaction.error api.IDBTransaction.error.DOMException api.IDBTransaction.error_event api.IDBTransaction.mode api.IDBTransaction.objectStore api.IDBTransaction.objectStoreNames api.IDBTransaction.worker_support api.IDBVersionChangeEvent api.IDBVersionChangeEvent.IDBVersionChangeEvent api.IDBVersionChangeEvent.newVersion api.IDBVersionChangeEvent.oldVersion api.IDBVersionChangeEvent.worker_support api.indexedDB api.indexedDB.worker_support
individual-transforms	Individual transform properties	The translate, rotate, and scale CSS properties apply single transformations independently, as opposed to applying multiple transformations with the transform CSS property.	css.properties.rotate css.properties.rotate.none css.properties.rotate.x_y_z_angle css.properties.scale css.properties.scale.none css.properties.translate css.properties.translate.none
inert	Inert elements	The inert HTML attribute marks an element and its descendants as non-interactive. Inert elements don't get focus or fire click events.	api.HTMLElement.inert api.HTMLElement.inert.ignores_find_in_page html.global_attributes.inert
inherit-value	inherit	The inherit keyword resets any CSS property to the computed value of that property from the parent element.	css.types.global_keywords css.types.global_keywords.inherit
initial-letter	initial-letter	The initial-letter CSS property sets the number of lines the first letter of an element occupies. You can use the property to make a raised capital or drop cap.	css.properties.initial-letter css.properties.initial-letter.normal
initial-value	initial	The initial keyword resets any CSS property to its initial value as defined by the specification. For example, the initial value of the display property is inline, regardless of the element being styled. Not to be confused with revert, which resets to the user or browser default style.	css.types.global_keywords.initial
ink	Ink	The navigator.ink API uses the system compositor to draw to a <canvas> element ahead of pointer events, reducing the delay between moving a stylus or cursor and a pen stroke appearing on screen.	api.DelegatedInkTrailPresenter api.DelegatedInkTrailPresenter.presentationArea api.DelegatedInkTrailPresenter.updateInkTrailStartPoint api.Ink api.Ink.requestPresenter api.Navigator.ink
input	<input>	The <input type="text"> HTML element allows the user to enter information into a form. By default, an <input> element is a text input.	api.HTMLInputElement api.HTMLInputElement.accept api.HTMLInputElement.alt api.HTMLInputElement.autocomplete api.HTMLInputElement.cancel_event api.HTMLInputElement.checked api.HTMLInputElement.defaultValue api.HTMLInputElement.disabled api.HTMLInputElement.form api.HTMLInputElement.formAction api.HTMLInputElement.formEnctype api.HTMLInputElement.formMethod api.HTMLInputElement.formNoValidate api.HTMLInputElement.formTarget api.HTMLInputElement.height api.HTMLInputElement.invalid_event api.HTMLInputElement.labels api.HTMLInputElement.list api.HTMLInputElement.maxLength api.HTMLInputElement.minLength api.HTMLInputElement.multiple api.HTMLInputElement.name api.HTMLInputElement.pattern api.HTMLInputElement.placeholder api.HTMLInputElement.readOnly api.HTMLInputElement.required api.HTMLInputElement.select api.HTMLInputElement.select_event api.HTMLInputElement.selectionDirection api.HTMLInputElement.selectionEnd api.HTMLInputElement.selectionStart api.HTMLInputElement.setRangeText api.HTMLInputElement.setSelectionRange api.HTMLInputElement.size api.HTMLInputElement.type api.HTMLInputElement.value api.HTMLInputElement.width html.elements.input html.elements.input.accept html.elements.input.alt html.elements.input.checked html.elements.input.disabled html.elements.input.form html.elements.input.formaction html.elements.input.formenctype html.elements.input.formmethod html.elements.input.formnovalidate html.elements.input.formtarget html.elements.input.list html.elements.input.maxlength html.elements.input.minlength html.elements.input.multiple html.elements.input.name html.elements.input.pattern html.elements.input.placeholder html.elements.input.readonly html.elements.input.required html.elements.input.size html.elements.input.src html.elements.input.type_text
input-button	<input type="button">	The <input type="button"> HTML element represents a button that triggers some action, such as submitting a form or opening a dialog, styled as a labeled rectangular box by default. Not to be confused with the <button> element, which contains HTML content.	html.elements.input.type_button
input-checkbox	<input type="checkbox">	The <input type="checkbox"> HTML element represents a tickable box with two states, checked and unchecked.	api.HTMLInputElement.defaultChecked api.HTMLInputElement.indeterminate html.elements.input.type_checkbox
input-color	<input type="color">	The <input type="color"> HTML element shows a color picker from which users can choose a color value.	html.elements.input.type_color
input-date-time	Date and time <input> types	The <input type="date"> and <input type="time"> HTML elements show date and time pickers.	api.HTMLInputElement.valueAsDate html.elements.input.type_date html.elements.input.type_datetime-local html.elements.input.type_month html.elements.input.type_time html.elements.input.type_week
input-email-tel-url	Email, telephone, and URL <input> types	The <input type="email">, <input type="tel">, and <input type="url"> HTML elements represent email address, telephone number, and URL fields in a form.	html.elements.input.type_email html.elements.input.type_tel html.elements.input.type_url
input-event	Input events	The input event fires when a form control changes or an element with the contenteditable attribute changes.	api.Element.beforeinput_event api.Element.input_event api.InputEvent api.InputEvent.InputEvent api.InputEvent.data api.InputEvent.dataTransfer api.InputEvent.getTargetRanges api.InputEvent.inputType api.InputEvent.inputType.insertFromPasteAsQuotation api.InputEvent.isComposing
input-file	<input type="file">	The <input type="file"> HTML element shows a file picker from which users can choose a file to upload with the form.	api.HTMLInputElement.files html.elements.input.type_file
input-hidden	<input type="hidden">	The <input type="hidden"> HTML element represents a form field that is not shown visually but is still included in the form submission.	html.elements.input.type_hidden
input-image	<input type="image">	The <input type="image"> HTML element is an image that can be used to submit a form, like the <input type="submit"> element.	api.HTMLInputElement.src html.elements.input.type_image
input-number	<input type="number">	The <input type="number"> HTML element represents numeric input data.	api.HTMLInputElement.max api.HTMLInputElement.min api.HTMLInputElement.step api.HTMLInputElement.stepDown api.HTMLInputElement.stepUp api.HTMLInputElement.valueAsNumber html.elements.input.max html.elements.input.min html.elements.input.step html.elements.input.type_number
input-password	<input type="password">	The <input type="password"> HTML element represents a field for users to enter a password. The password is hidden from view, typically replaced by dots or asterisks.	html.elements.input.type_password html.elements.input.type_password.insecure_login_handling
input-radio	<input type="radio">	The <input type="radio"> HTML element represents one button in a group such that only one can be chosen at a time.	html.elements.input.type_radio
input-range	<input type="range">	The <input type="range"> element represents a slider for choosing an inexact value between a minimum and maximum value.	html.elements.input.type_range html.elements.input.type_range.tick_marks html.elements.input.type_range.vertical_orientation
input-reset	<input type="reset">	The <input type="reset"> HTML element represents a button that sets all form fields to their initial values.	html.elements.input.type_reset
input-selectors	Input selectors	The :checked, :disabled, and :enabled CSS pseudo-classes match form elements based on their state.	css.selectors.checked css.selectors.disabled css.selectors.enabled
input-submit	<input type="submit">	The <input type="submit"> HTML element represents a button that triggers an action on its associated <form>, such as sending the form data to a server.	html.elements.input.type_submit
ins	<ins>	The <ins> element element represents a range of text that has been inserted into a document, styling text as underlined by default.	html.elements.ins html.elements.ins.cite html.elements.ins.datetime
insertable-streams	Insertable streams for MediaStreamTrack	The MediaStreamTrackProcessor and MediaStreamTrackGenerator APIs modify the contents of a media track for merging streams, applying real-time effects like funny hats, and content overlays.	api.MediaStreamTrackProcessor api.MediaStreamTrackProcessor.MediaStreamTrackProcessor api.MediaStreamTrackProcessor.readable api.VideoTrackGenerator api.VideoTrackGenerator.VideoTrackGenerator api.VideoTrackGenerator.muted api.VideoTrackGenerator.track api.VideoTrackGenerator.writable
interaction	Interaction media queries	The pointer, any-pointer, hover, and any-hover CSS media queries set styles based on the presence of pointing devices and their ability to hover over elements. For example, most smartphones match the (hover: none) and (pointer: coarse) media query.	css.at-rules.media.any-hover css.at-rules.media.any-pointer css.at-rules.media.hover css.at-rules.media.pointer
interpolate-size	interpolate-size	The interpolate-size CSS property sets whether animations and transitions interpolate between a numeric value and a keyword value, such as from a fixed length to auto or fit-content.	css.properties.interpolate-size css.properties.interpolate-size.allow-keywords css.properties.interpolate-size.numeric-only
intersection-observer	Intersection observer	The Intersection Observer API asynchronously observes changes in the intersection of a target element with an ancestor element or with a top-level document's viewport.	api.IntersectionObserver api.IntersectionObserver.IntersectionObserver api.IntersectionObserver.IntersectionObserver.options_root_parameter_Document api.IntersectionObserver.delay api.IntersectionObserver.disconnect api.IntersectionObserver.observe api.IntersectionObserver.root api.IntersectionObserver.rootMargin api.IntersectionObserver.scrollMargin api.IntersectionObserver.takeRecords api.IntersectionObserver.thresholds api.IntersectionObserver.trackVisibility api.IntersectionObserver.unobserve api.IntersectionObserverEntry api.IntersectionObserverEntry.IntersectionObserverEntry api.IntersectionObserverEntry.boundingClientRect api.IntersectionObserverEntry.intersectionRatio api.IntersectionObserverEntry.intersectionRect api.IntersectionObserverEntry.isIntersecting api.IntersectionObserverEntry.isVisible api.IntersectionObserverEntry.rootBounds api.IntersectionObserverEntry.target api.IntersectionObserverEntry.time
intersection-observer-v2	Intersection observer visibility tracking	The trackVisibility parameter for the IntersectionObserver constructor enables tracking the visibility of an element, to detect if it may be obscured by other content or visual effects. Also known as IntersectionObserver v2.
intl	Intl	The Intl API provides language sensitive string comparison, number formatting, date and time formatting, and more.	javascript.builtins.Array.toLocaleString javascript.builtins.Array.toLocaleString.locales_parameter javascript.builtins.Array.toLocaleString.options_parameter javascript.builtins.BigInt.toLocaleString javascript.builtins.BigInt.toLocaleString.locales_parameter javascript.builtins.BigInt.toLocaleString.options_parameter javascript.builtins.Date.toLocaleDateString javascript.builtins.Date.toLocaleDateString.iana_time_zone_names javascript.builtins.Date.toLocaleDateString.locales_parameter javascript.builtins.Date.toLocaleDateString.options_parameter javascript.builtins.Date.toLocaleString javascript.builtins.Date.toLocaleString.iana_time_zone_names javascript.builtins.Date.toLocaleString.locales_parameter javascript.builtins.Date.toLocaleString.options_parameter javascript.builtins.Date.toLocaleTimeString javascript.builtins.Date.toLocaleTimeString.iana_time_zone_names javascript.builtins.Date.toLocaleTimeString.locales_parameter javascript.builtins.Date.toLocaleTimeString.options_parameter javascript.builtins.Intl javascript.builtins.Intl.Collator javascript.builtins.Intl.Collator.Collator javascript.builtins.Intl.Collator.Collator.options_caseFirst_parameter javascript.builtins.Intl.Collator.Collator.options_collation_parameter javascript.builtins.Intl.Collator.Collator.options_ignorePunctuation_parameter javascript.builtins.Intl.Collator.Collator.options_localeMatcher_parameter javascript.builtins.Intl.Collator.Collator.options_numeric_parameter javascript.builtins.Intl.Collator.Collator.options_sensitivity_parameter javascript.builtins.Intl.Collator.Collator.options_usage_parameter javascript.builtins.Intl.Collator.compare javascript.builtins.Intl.Collator.resolvedOptions javascript.builtins.Intl.Collator.supportedLocalesOf javascript.builtins.Intl.DateTimeFormat javascript.builtins.Intl.DateTimeFormat.DateTimeFormat javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.locales_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_calendar_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dateStyle_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dayPeriod_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_fractionalSecondDigits_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_hourCycle_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_numberingSystem_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeStyle_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter.extended_values javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter.iana_time_zones javascript.builtins.Intl.DateTimeFormat.format javascript.builtins.Intl.DateTimeFormat.formatRange javascript.builtins.Intl.DateTimeFormat.formatRangeToParts javascript.builtins.Intl.DateTimeFormat.formatToParts javascript.builtins.Intl.DateTimeFormat.resolvedOptions javascript.builtins.Intl.DateTimeFormat.resolvedOptions.computed_timezone javascript.builtins.Intl.DateTimeFormat.supportedLocalesOf javascript.builtins.Intl.NumberFormat javascript.builtins.Intl.NumberFormat.NumberFormat javascript.builtins.Intl.NumberFormat.NumberFormat.locales_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_compactDisplay_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencyDisplay_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencySign_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currency_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_localeMatcher_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumFractionDigits_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumSignificantDigits_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumFractionDigits_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumIntegerDigits_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumSignificantDigits_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_notation_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_numberingSystem_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingIncrement_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingMode_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingPriority_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter.negative javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_style_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_trailingZeroDisplay_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unitDisplay_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unit_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter.string_values javascript.builtins.Intl.NumberFormat.format javascript.builtins.Intl.NumberFormat.format.number_parameter-string_decimal javascript.builtins.Intl.NumberFormat.formatRange javascript.builtins.Intl.NumberFormat.formatRangeToParts javascript.builtins.Intl.NumberFormat.formatToParts javascript.builtins.Intl.NumberFormat.resolvedOptions javascript.builtins.Intl.NumberFormat.supportedLocalesOf javascript.builtins.Intl.getCanonicalLocales javascript.builtins.Intl.supportedValuesOf javascript.builtins.Number.toLocaleString javascript.builtins.Number.toLocaleString.locales_parameter javascript.builtins.Number.toLocaleString.options_parameter javascript.builtins.Object.toLocaleString javascript.builtins.String.localeCompare javascript.builtins.String.localeCompare.locales_parameter javascript.builtins.String.localeCompare.options_parameter javascript.builtins.String.toLocaleLowerCase javascript.builtins.String.toLocaleLowerCase.locales_parameter javascript.builtins.String.toLocaleUpperCase javascript.builtins.String.toLocaleUpperCase.locales_parameter javascript.builtins.TypedArray.toLocaleString
intl-display-names	Intl.DisplayNames	The Intl.DisplayNames API provides localized names of language, region, script, and currency codes.	javascript.builtins.Intl.DisplayNames javascript.builtins.Intl.DisplayNames.DisplayNames javascript.builtins.Intl.DisplayNames.of javascript.builtins.Intl.DisplayNames.resolvedOptions javascript.builtins.Intl.DisplayNames.supportedLocalesOf
intl-duration-format	Intl.DurationFormat	The Intl.DurationFormat API creates a locale-aware formatter that turns an object representing a duration (such as days, hours, and minutes) into a string.	javascript.builtins.Intl.DurationFormat javascript.builtins.Intl.DurationFormat.DurationFormat javascript.builtins.Intl.DurationFormat.format javascript.builtins.Intl.DurationFormat.formatToParts javascript.builtins.Intl.DurationFormat.resolvedOptions javascript.builtins.Intl.DurationFormat.supportedLocalesOf
intl-list-format	Intl.ListFormat	The Intl.ListFormat API creates a locale-aware formatter that turns iterable objects into localized strings.	javascript.builtins.Intl.ListFormat javascript.builtins.Intl.ListFormat.ListFormat javascript.builtins.Intl.ListFormat.format javascript.builtins.Intl.ListFormat.formatToParts javascript.builtins.Intl.ListFormat.resolvedOptions javascript.builtins.Intl.ListFormat.supportedLocalesOf
intl-locale	Intl.Locale	The Intl.Locale API parses Unicode locale identifiers, with language, region, and script codes, such as zh-Hans-CN or en-GB.	javascript.builtins.Intl.Locale javascript.builtins.Intl.Locale.Locale javascript.builtins.Intl.Locale.baseName javascript.builtins.Intl.Locale.calendar javascript.builtins.Intl.Locale.caseFirst javascript.builtins.Intl.Locale.collation javascript.builtins.Intl.Locale.hourCycle javascript.builtins.Intl.Locale.language javascript.builtins.Intl.Locale.maximize javascript.builtins.Intl.Locale.minimize javascript.builtins.Intl.Locale.numberingSystem javascript.builtins.Intl.Locale.numeric javascript.builtins.Intl.Locale.region javascript.builtins.Intl.Locale.script javascript.builtins.Intl.Locale.toString
intl-locale-info	Intl.Locale info	The getter methods of the Intl.Locale API provide supplemental information about a Unicode locale, such as the locale's calendar (for example, the first day in a week or the weekend start day), writing direction, 12- or 24-hour cycles, and numbering system.	javascript.builtins.Intl.Locale.getCalendars javascript.builtins.Intl.Locale.getCollations javascript.builtins.Intl.Locale.getHourCycles javascript.builtins.Intl.Locale.getNumberingSystems javascript.builtins.Intl.Locale.getTextInfo javascript.builtins.Intl.Locale.getTimeZones javascript.builtins.Intl.Locale.getWeekInfo
intl-plural-rules	Intl.PluralRules	The Intl.PluralRules API creates a locale-aware object that tells you which of the language's pluralization rules apply based on a given number.	javascript.builtins.Intl.PluralRules javascript.builtins.Intl.PluralRules.PluralRules javascript.builtins.Intl.PluralRules.PluralRules.options_parameter javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingIncrement_parameter javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingMode_parameter javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingPriority_parameter javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_trailingZeroDisplay_parameter javascript.builtins.Intl.PluralRules.resolvedOptions javascript.builtins.Intl.PluralRules.select javascript.builtins.Intl.PluralRules.selectRange javascript.builtins.Intl.PluralRules.supportedLocalesOf
intl-relative-time-format	Intl.RelativeTimeFormat	The Intl.RelativeTimeFormat API creates a locale-aware formatter that turns an object representing a relative time (such as '1 day ago') into a localized string.	javascript.builtins.Intl.RelativeTimeFormat javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.locales_parameter javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_localeMatcher_parameter javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numberingSystem_parameter javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numeric_parameter javascript.builtins.Intl.RelativeTimeFormat.format javascript.builtins.Intl.RelativeTimeFormat.formatToParts javascript.builtins.Intl.RelativeTimeFormat.resolvedOptions javascript.builtins.Intl.RelativeTimeFormat.supportedLocalesOf
intl-segmenter	Intl.Segmenter	The Intl.Segmenter API creates a locale-aware text splitter that can separate a string into meaningful graphemes, words, or sentences.	javascript.builtins.Intl.Segmenter javascript.builtins.Intl.Segmenter.Segmenter javascript.builtins.Intl.Segmenter.resolvedOptions javascript.builtins.Intl.Segmenter.segment javascript.builtins.Intl.Segmenter.supportedLocalesOf javascript.builtins.Intl.Segments javascript.builtins.Intl.Segments.@@iterator javascript.builtins.Intl.Segments.containing
inverted-colors	inverted-colors media query	The inverted-colors CSS media query sets styles based on whether the user has inverted all colors, such as with mobile accessibility settings.	css.at-rules.media.inverted-colors
is	:is()	The :is() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list.	css.selectors.is css.selectors.is.forgiving_selector_list
isolation	isolation	The isolation CSS property creates a new stacking context, which impacts z-index ordering and blend modes.	css.properties.isolation
iterator-methods	Iterator methods	The Iterator object is an abstract base for objects that implement the iterator protocol. It provides methods common to built-in iterators, such as filter(), find(), map(), and reduce(). You can also use the static method Iterator.from() to convert an existing iterable into an Iterator.	javascript.builtins.Iterator.Iterator javascript.builtins.Iterator.drop javascript.builtins.Iterator.every javascript.builtins.Iterator.filter javascript.builtins.Iterator.find javascript.builtins.Iterator.flatMap javascript.builtins.Iterator.forEach javascript.builtins.Iterator.from javascript.builtins.Iterator.map javascript.builtins.Iterator.reduce javascript.builtins.Iterator.some javascript.builtins.Iterator.take javascript.builtins.Iterator.toArray
iterators	Iterators and the for...of loop	The for...of loop operates on a sequence of values sourced from an iterable object, such as arrays, array-like objects, DOM collections, iterators, generators, and user-defined iterables. All built-in iterators inherit from the Iterator class.	javascript.builtins.Iterator javascript.builtins.Iterator.@@iterator javascript.statements.for_of javascript.statements.for_of.closing_iterators
javascript	JavaScript (initial core language support)	JavaScript is a programming language that runs in browsers, usually through the <script> element. JavaScript has changed over many years. This feature represents the oldest language features, such as built-in objects, statements, and operators. Also known as ECMAScript.	javascript.builtins.Boolean javascript.builtins.Boolean.Boolean javascript.builtins.Boolean.toString javascript.builtins.Boolean.valueOf javascript.builtins.Error javascript.builtins.Error.Error javascript.builtins.Error.message javascript.builtins.Error.name javascript.builtins.Error.toString javascript.builtins.EvalError javascript.builtins.EvalError.EvalError javascript.builtins.RangeError javascript.builtins.RangeError.RangeError javascript.builtins.ReferenceError javascript.builtins.ReferenceError.ReferenceError javascript.builtins.SyntaxError javascript.builtins.SyntaxError.SyntaxError javascript.builtins.TypeError javascript.builtins.TypeError.TypeError javascript.builtins.URIError javascript.builtins.URIError.URIError javascript.builtins.decodeURI javascript.builtins.decodeURIComponent javascript.builtins.encodeURI javascript.builtins.encodeURIComponent javascript.builtins.eval javascript.builtins.isFinite javascript.builtins.parseFloat javascript.builtins.undefined javascript.grammar.boolean_literals javascript.grammar.hexadecimal_escape_sequences javascript.grammar.null_literal javascript.grammar.trailing_commas javascript.grammar.trailing_commas.trailing_commas_in_object_literals javascript.grammar.unicode_escape_sequences javascript.operators.addition javascript.operators.addition_assignment javascript.operators.assignment javascript.operators.bitwise_and javascript.operators.bitwise_and_assignment javascript.operators.bitwise_not javascript.operators.bitwise_or javascript.operators.bitwise_or_assignment javascript.operators.bitwise_xor javascript.operators.bitwise_xor_assignment javascript.operators.comma javascript.operators.conditional javascript.operators.decrement javascript.operators.delete javascript.operators.division javascript.operators.division_assignment javascript.operators.equality javascript.operators.greater_than javascript.operators.greater_than_or_equal javascript.operators.grouping javascript.operators.in javascript.operators.increment javascript.operators.inequality javascript.operators.instanceof javascript.operators.left_shift javascript.operators.left_shift_assignment javascript.operators.less_than javascript.operators.less_than_or_equal javascript.operators.logical_and javascript.operators.logical_not javascript.operators.logical_or javascript.operators.multiplication javascript.operators.multiplication_assignment javascript.operators.new javascript.operators.null javascript.operators.property_accessors javascript.operators.remainder javascript.operators.remainder_assignment javascript.operators.right_shift javascript.operators.right_shift_assignment javascript.operators.strict_equality javascript.operators.strict_inequality javascript.operators.subtraction javascript.operators.subtraction_assignment javascript.operators.this javascript.operators.typeof javascript.operators.unary_negation javascript.operators.unary_plus javascript.operators.unsigned_right_shift javascript.operators.unsigned_right_shift_assignment javascript.operators.void javascript.statements.block javascript.statements.break javascript.statements.continue javascript.statements.debugger javascript.statements.do_while javascript.statements.empty javascript.statements.for javascript.statements.for_in javascript.statements.if_else javascript.statements.label javascript.statements.return javascript.statements.switch javascript.statements.throw javascript.statements.try_catch javascript.statements.var javascript.statements.while
jpegxl	JPEG XL	The JPEG XL image format is a raster graphics file format that supports animation, alpha transparency, and lossy as well as lossless compression.
js-modules	JavaScript modules	JavaScript modules allow code to be organized into reusable units. Modules use import to load other modules and export to declare what is available to import from other modules. In HTML, modules are loaded with <script type="module">.	html.elements.script.nomodule html.elements.script.type.module javascript.operators.import javascript.operators.import_meta javascript.operators.import_meta.resolve javascript.statements.export javascript.statements.export.default javascript.statements.export.namespace javascript.statements.import javascript.statements.import.import_attributes javascript.statements.import.worklet_support svg.elements.script.type.module
js-modules-service-workers	JavaScript modules in service workers	The navigator.serviceWorker.register() method accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in service workers.	api.ServiceWorker.ecmascript_modules javascript.statements.import.service_worker_support
js-modules-shared-workers	JavaScript modules in shared workers	The SharedWorker() constructor accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in shared workers.	api.SharedWorker.SharedWorker.ecmascript_modules api.SharedWorker.SharedWorker.options_type_parameter
js-modules-workers	JavaScript modules in workers	The Worker() constructor accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in workers.	api.Worker.Worker.ecmascript_modules api.Worker.Worker.options_type_parameter javascript.operators.import.worker_support javascript.statements.import.worker_support
json	JSON	The JSON API provides static methods for parsing values from and converting values to JavaScript Object Notation (JSON), a serialization format for objects, arrays, numbers, strings, Boolean values, and null.	javascript.builtins.JSON javascript.builtins.JSON.json_superset javascript.builtins.JSON.parse javascript.builtins.JSON.stringify javascript.builtins.JSON.stringify.well_formed_stringify
json-modules	JSON import attributes	Module import … with { type: "json" } statements load JSON data. Also known as JSON module scripts and formerly known as import assertions.	javascript.statements.import.import_attributes.type_json
json-raw	JSON source text access	To serialize and parse JSON in a lossless way, JSON.stringify() handles rawJSON values and JSON.parse()'s reviver callback takes a source context parameter.	javascript.builtins.JSON.isRawJSON javascript.builtins.JSON.parse.reviver_parameter_context_argument javascript.builtins.JSON.rawJSON
kbd	<kbd>	The <kbd> element represents textual user input, such as keyboard or voice input, styling text in monospaced type by default.	html.elements.kbd
keyboard-events	Keyboard events	The keydown and keyup events fire for each key press (or, with modifier keys, a combination of key presses) on a keyboard.	api.Element.keydown_event api.Element.keyup_event api.KeyboardEvent api.KeyboardEvent.KeyboardEvent api.KeyboardEvent.altKey api.KeyboardEvent.code api.KeyboardEvent.ctrlKey api.KeyboardEvent.getModifierState api.KeyboardEvent.getModifierState.key_parameter_alt api.KeyboardEvent.getModifierState.key_parameter_altgraph api.KeyboardEvent.getModifierState.key_parameter_capslock api.KeyboardEvent.getModifierState.key_parameter_control api.KeyboardEvent.getModifierState.key_parameter_fn api.KeyboardEvent.getModifierState.key_parameter_meta api.KeyboardEvent.getModifierState.key_parameter_numlock api.KeyboardEvent.getModifierState.key_parameter_scrolllock api.KeyboardEvent.getModifierState.key_parameter_shift api.KeyboardEvent.getModifierState.key_parameter_symbol api.KeyboardEvent.isComposing api.KeyboardEvent.key api.KeyboardEvent.key.dead_key api.KeyboardEvent.key.non_printable_keys api.KeyboardEvent.key.printable_key api.KeyboardEvent.location api.KeyboardEvent.metaKey api.KeyboardEvent.repeat api.KeyboardEvent.shiftKey
keyboard-lock	Keyboard lock	The navigator.keyboard.lock() API allows you to capture keys that are normally reserved by the operating system. It can be used to provide an immersive fullscreen experience such as games.	api.Keyboard api.Keyboard.lock api.Keyboard.unlock api.Navigator.keyboard
keyboard-map	Keyboard map	The navigator.keyboard.getLayoutMap() API returns a map from key codes to human readable key names. It can be used to describe buttons to the user when using the keyboard as a set of buttons, such as in games.	api.Keyboard.getLayoutMap api.KeyboardLayoutMap api.KeyboardLayoutMap.@@iterator api.KeyboardLayoutMap.entries api.KeyboardLayoutMap.forEach api.KeyboardLayoutMap.get api.KeyboardLayoutMap.has api.KeyboardLayoutMap.keys api.KeyboardLayoutMap.size api.KeyboardLayoutMap.values
khr-parallel-shader-compile	KHR_parallel_shader_compile WebGL extension	The KHR_parallel_shader_compile extension for WebGL 1.0 and 2.0 contexts checks the status of shader compilation without blocking the runtime.	api.KHR_parallel_shader_compile
lab	Lab and LCH	The CIE Lab color space expresses colors in terms of lightness and how red/green and blue/yellow a color is. LCH is a variant of Lab with polar coordinates. These color spaces can be used with the CSS color(), lab(), and lch() functions. Also known as CIELAB and CIELCH.	css.types.color.lab css.types.color.lab.mixed_type_parameters css.types.color.lch css.types.color.lch.mixed_type_parameters
label	<label>	The <label> HTML element represents a caption for a form field.	api.HTMLLabelElement api.HTMLLabelElement.control api.HTMLLabelElement.form api.HTMLLabelElement.htmlFor html.elements.label html.elements.label.for
lang	:lang()	The :lang() CSS functional pseudo-class matches elements based on their content language.	css.selectors.lang css.selectors.lang.argument_list css.selectors.lang.wildcards
lang-attr	Lang	The lang global HTML attribute defines the language of an element. It's used by assistive technology to correctly read the content, translation tools to select the origin language, and other applications.	api.HTMLElement.lang html.global_attributes.lang
language	Language	The navigator.language read-only property returns a string representing the preferred language of the user, usually the language of the browser UI. The navigator.languages read-only property returns an array of strings representing the user's preferred languages.	api.Navigator.language api.Navigator.languages api.Window.languagechange_event api.WorkerGlobalScope.languagechange_event api.WorkerNavigator.language api.WorkerNavigator.languages
largest-contentful-paint	Largest contentful paint (LCP)	The largest-contentful-paint performance entry and the LargestContentfulPaint API measures the time it takes for the largest image or text to appear. Largest contentful paint (LCP) is a common metric for perceived loading times.	api.LargestContentfulPaint api.LargestContentfulPaint.element api.LargestContentfulPaint.id api.LargestContentfulPaint.loadTime api.LargestContentfulPaint.renderTime api.LargestContentfulPaint.size api.LargestContentfulPaint.toJSON api.LargestContentfulPaint.url
layout-direction-override	Layout direction override	The unicode-bidi and direction CSS properties override the Unicode layout algorithm. They are intended for Document Type Definition (DTD) designers. For HTML documents, you should use the dir global HTML attribute and <bdo> HTML element instead.	css.properties.direction css.properties.direction.ltr css.properties.direction.rtl css.properties.unicode-bidi css.properties.unicode-bidi.bidi-override css.properties.unicode-bidi.embed css.properties.unicode-bidi.isolate css.properties.unicode-bidi.isolate-override css.properties.unicode-bidi.normal css.properties.unicode-bidi.plaintext
layout-instability	Layout instability	The layout-shift performance entry and LayoutShift API measures the layout stability of web pages based on movements of the elements on the page.	api.LayoutShift api.LayoutShift.hadRecentInput api.LayoutShift.lastInputTime api.LayoutShift.sources api.LayoutShift.toJSON api.LayoutShift.value api.LayoutShiftAttribution api.LayoutShiftAttribution.currentRect api.LayoutShiftAttribution.node api.LayoutShiftAttribution.previousRect api.LayoutShiftAttribution.toJSON
let-const	Let and const	The let and const declarations define block-scoped variables.	javascript.statements.const javascript.statements.let
letter-spacing	letter-spacing	The letter-spacing CSS property controls the amount of space between each letter in an element or block of text.	css.properties.letter-spacing css.properties.letter-spacing.normal svg.global_attributes.letter-spacing
lh	lh unit	The lh CSS length unit corresponds to the requested line height, the computed value of the line-height property. Some lines may be higher than this based on their content.	css.types.length.lh
light-dark	light-dark()	The light-dark() CSS function accepts two colors and uses one depending on the current color scheme.	css.types.color.light-dark
line-break	line-break	The line-break CSS property sets how strictly to apply rules for wrapping text to new lines, especially for symbols and punctuation.	css.properties.line-break css.properties.line-break.anywhere css.properties.line-break.auto css.properties.line-break.loose css.properties.line-break.normal css.properties.line-break.strict
line-clamp	line-clamp	The line-clamp CSS property limits the text in a block container to a certain number of lines. The prefixed -webkit-line-clamp is widely supported but only works with -webkit-box-orient: vertical in combination with display: -webkit-box or display: -webkit-inline-box.	css.properties.line-clamp css.properties.line-clamp.none
line-height	line-height	The line-height CSS property sets the spacing between text baselines, oriented to the horizontal or vertical writing mode.	css.properties.line-height css.properties.line-height.normal
linear-easing	linear() easing	The linear() easing function for animations and transitions interpolates linearly between the control points, and can be used to approximate complex easing functions, such as a bounce effect.	css.types.easing-function.linear-function
link	<link>	The <link> element creates a relationship between the current document and an external resource, such as a stylesheet or favicon.	api.HTMLLinkElement api.HTMLLinkElement.as api.HTMLLinkElement.crossOrigin api.HTMLLinkElement.disabled api.HTMLLinkElement.href api.HTMLLinkElement.hreflang api.HTMLLinkElement.integrity api.HTMLLinkElement.media api.HTMLLinkElement.rel api.HTMLLinkElement.relList api.HTMLLinkElement.sizes api.HTMLLinkElement.type html.elements.link html.elements.link.as html.elements.link.crossorigin html.elements.link.disabled html.elements.link.href html.elements.link.hreflang html.elements.link.integrity html.elements.link.media html.elements.link.rel html.elements.link.sizes html.elements.link.type
link-rel-dns-prefetch	<link rel="dns-prefetch">	The rel="dns-prefetch" attribute for the <link> HTML element is a hint to the browser that the page or user is likely to request resources from another domain, so the browser should preemptively resolve DNS for the href value's domain.	html.elements.link.rel.dns-prefetch
link-rel-expect	<link rel="expect">	The rel="expect" attribute for the <link> HTML element is a hint to the browser to block rendering until the element that the href value references is connected to the document and fully parsed.	html.elements.link.rel.expect
link-rel-preconnect	<link rel="preconnect">	The rel="preconnect" attribute for the <link> HTML element is a hint to the browser that the page or user is likely to request resources from another origin, so the browser should preemptively start a connection to the href value's origin.	html.elements.link.rel.preconnect
link-rel-prefetch	<link rel="prefetch">	The rel="prefetch" attribute for the <link> HTML element is a hint to the browser that the user is likely to navigate to a resource, so the browser should preemptively fetch and cache the resource.	api.PerformanceResourceTiming.deliveryType.navigational-prefetch html.elements.link.rel.prefetch http.headers.Sec-Purpose http.headers.Sec-Purpose.prefetch
link-rel-preload	<link rel="preload">	The rel="preload" attribute for the <link> HTML element requests resources, such as images or style sheets, that the page needs soon, so the browser may prioritize them for loading before rendering begins.	html.elements.link.rel.preload html.elements.link.rel.preload.as-fetch html.elements.link.rel.preload.as-font html.elements.link.rel.preload.as-image html.elements.link.rel.preload.as-script html.elements.link.rel.preload.as-style html.elements.link.rel.preload.as-track
link-selectors	Link selectors	The :link CSS pseudo-class matches unvisited links, :visited matches visited links, and :any-link matches both.	css.selectors.any-link css.selectors.any-link.not_match_link css.selectors.link css.selectors.link.not_match_link css.selectors.visited css.selectors.visited.not_match_link css.selectors.visited.privacy_measures
list-elements	<ol>, <ul>, and <li>	The <ol>, <ul>, and <li> HTML elements represent ordered and unordered lists.	api.HTMLLIElement api.HTMLLIElement.value api.HTMLOListElement api.HTMLOListElement.reversed api.HTMLOListElement.start api.HTMLOListElement.type api.HTMLUListElement html.elements.li html.elements.li.value html.elements.ol html.elements.ol.reversed html.elements.ol.start html.elements.ol.type html.elements.ul
list-style	List style	The list-style shorthand CSS property and the list-style-image, list-style-position, and list-style-type longhand properties set the position and appearance of a list item's marker.	css.properties.list-style css.properties.list-style-image css.properties.list-style-image.none css.properties.list-style-position css.properties.list-style-position.inside css.properties.list-style-position.outside css.properties.list-style-type css.properties.list-style-type.arabic-indic css.properties.list-style-type.armenian css.properties.list-style-type.bengali css.properties.list-style-type.cambodian css.properties.list-style-type.circle css.properties.list-style-type.cjk-decimal css.properties.list-style-type.cjk-earthly-branch css.properties.list-style-type.cjk-heavenly-stem css.properties.list-style-type.cjk-ideographic css.properties.list-style-type.decimal css.properties.list-style-type.decimal-leading-zero css.properties.list-style-type.devanagari css.properties.list-style-type.disc css.properties.list-style-type.disclosure-closed css.properties.list-style-type.disclosure-open css.properties.list-style-type.ethiopic-numeric css.properties.list-style-type.georgian css.properties.list-style-type.gujarati css.properties.list-style-type.gurmukhi css.properties.list-style-type.hebrew css.properties.list-style-type.hiragana css.properties.list-style-type.hiragana-iroha css.properties.list-style-type.japanese-formal css.properties.list-style-type.japanese-informal css.properties.list-style-type.kannada css.properties.list-style-type.katakana css.properties.list-style-type.katakana-iroha css.properties.list-style-type.khmer css.properties.list-style-type.korean-hangul-formal css.properties.list-style-type.korean-hanja-formal css.properties.list-style-type.korean-hanja-informal css.properties.list-style-type.lao css.properties.list-style-type.lower-alpha css.properties.list-style-type.lower-armenian css.properties.list-style-type.lower-greek css.properties.list-style-type.lower-latin css.properties.list-style-type.lower-roman css.properties.list-style-type.malayalam css.properties.list-style-type.mongolian css.properties.list-style-type.myanmar css.properties.list-style-type.none css.properties.list-style-type.oriya css.properties.list-style-type.persian css.properties.list-style-type.simp-chinese-formal css.properties.list-style-type.simp-chinese-informal css.properties.list-style-type.square css.properties.list-style-type.string css.properties.list-style-type.symbols css.properties.list-style-type.tamil css.properties.list-style-type.telugu css.properties.list-style-type.thai css.properties.list-style-type.tibetan css.properties.list-style-type.trad-chinese-formal css.properties.list-style-type.trad-chinese-informal css.properties.list-style-type.upper-alpha css.properties.list-style-type.upper-armenian css.properties.list-style-type.upper-latin css.properties.list-style-type.upper-roman css.properties.list-style.symbols
loading-lazy	Lazy-loading images and iframes	The loading="lazy" attribute for <img> and <iframe> elements blocks loading the external resource until the user scrolls to that element's part of the page.	api.HTMLIFrameElement.loading api.HTMLImageElement.loading html.elements.iframe.loading html.elements.img.loading
local-fonts	Local fonts	The window.queryLocalFonts() method returns an array of locally-installed fonts, each represented by a FontData object.	api.FontData api.FontData.blob api.FontData.family api.FontData.fullName api.FontData.postscriptName api.FontData.style api.Window.queryLocalFonts html.elements.iframe.allow.local-fonts http.headers.Permissions-Policy.local-fonts
localstorage	localStorage and sessionStorage	The localStorage and sessionStorage APIs store data as key-value pairs. While localStorage persists across sessions, sessionStorage data is discarded when the page is closed.	api.Storage api.Storage.clear api.Storage.getItem api.Storage.key api.Storage.length api.Storage.removeItem api.Storage.setItem api.StorageEvent api.StorageEvent.StorageEvent api.StorageEvent.key api.StorageEvent.newValue api.StorageEvent.oldValue api.StorageEvent.storageArea api.StorageEvent.url api.Window.localStorage api.Window.sessionStorage api.Window.storage_event
location	Location	The location global object represents the current page's address. You can use it to get the parts of the address (such as location.hostname or location.pathname) or navigate to another URL.	api.Document.location api.Location api.Location.ancestorOrigins api.Location.assign api.Location.hash api.Location.host api.Location.hostname api.Location.href api.Location.origin api.Location.pathname api.Location.port api.Location.protocol api.Location.reload api.Location.replace api.Location.search api.Location.toString api.Window.location
logical-assignments	Logical assignments	The logical AND assignment (&&=) and the logical OR assignment (\|\|=) operators short-circuit the respective binary logical operators.	javascript.operators.logical_and_assignment javascript.operators.logical_or_assignment
logical-properties	Logical properties	CSS logical properties control borders, size, margin, and padding with directions and dimensions relative to the writing mode. For example, in a left to right, top to bottom writing mode, block-end refers to the bottom. Also known as flow relative.	css.properties.block-size css.properties.block-size.fit-content css.properties.block-size.max-content css.properties.block-size.min-content css.properties.border-block css.properties.border-block-color css.properties.border-block-end css.properties.border-block-end-color css.properties.border-block-end-style css.properties.border-block-end-width css.properties.border-block-start css.properties.border-block-start-color css.properties.border-block-start-style css.properties.border-block-start-width css.properties.border-block-style css.properties.border-block-width css.properties.border-end-end-radius css.properties.border-end-start-radius css.properties.border-inline css.properties.border-inline-color css.properties.border-inline-end css.properties.border-inline-end-color css.properties.border-inline-end-style css.properties.border-inline-end-width css.properties.border-inline-start css.properties.border-inline-start-color css.properties.border-inline-start-style css.properties.border-inline-start-width css.properties.border-inline-style css.properties.border-inline-width css.properties.border-start-end-radius css.properties.border-start-start-radius css.properties.clear.inline-end css.properties.clear.inline-start css.properties.float.inline-end css.properties.float.inline-start css.properties.inline-size css.properties.inline-size.fit-content css.properties.inline-size.max-content css.properties.inline-size.min-content css.properties.inset css.properties.inset-block css.properties.inset-block-end css.properties.inset-block-end.auto css.properties.inset-block-start css.properties.inset-block-start.auto css.properties.inset-block.auto css.properties.inset-inline css.properties.inset-inline-end css.properties.inset-inline-end.auto css.properties.inset-inline-start css.properties.inset-inline-start.auto css.properties.inset-inline.auto css.properties.inset.auto css.properties.margin-block css.properties.margin-block-end css.properties.margin-block-start css.properties.margin-inline css.properties.margin-inline-end css.properties.margin-inline-start css.properties.max-block-size css.properties.max-block-size.fit-content css.properties.max-block-size.max-content css.properties.max-block-size.min-content css.properties.max-inline-size css.properties.max-inline-size.fit-content css.properties.max-inline-size.max-content css.properties.max-inline-size.min-content css.properties.min-block-size css.properties.min-block-size.fit-content css.properties.min-block-size.max-content css.properties.min-block-size.min-content css.properties.min-inline-size css.properties.min-inline-size.fit-content css.properties.min-inline-size.max-content css.properties.min-inline-size.min-content css.properties.overflow-block css.properties.overflow-block.overlay css.properties.overflow-inline css.properties.overflow-inline.overlay css.properties.padding-block css.properties.padding-block-end css.properties.padding-block-start css.properties.padding-inline css.properties.padding-inline-end css.properties.padding-inline-start
long-animation-frames	Long animation frames	The long-animation-frame performance event type and the PerformanceLongAnimationFrameTiming API provide information about rendering updates that take longer than 50 milliseconds. Also known as LoAFs.	api.PerformanceLongAnimationFrameTiming api.PerformanceLongAnimationFrameTiming.blockingDuration api.PerformanceLongAnimationFrameTiming.firstUIEventTimestamp api.PerformanceLongAnimationFrameTiming.renderStart api.PerformanceLongAnimationFrameTiming.scripts api.PerformanceLongAnimationFrameTiming.styleAndLayoutStart api.PerformanceLongAnimationFrameTiming.toJSON api.PerformanceScriptTiming api.PerformanceScriptTiming.executionStart api.PerformanceScriptTiming.forcedStyleAndLayoutDuration api.PerformanceScriptTiming.invoker api.PerformanceScriptTiming.invokerType api.PerformanceScriptTiming.pauseDuration api.PerformanceScriptTiming.sourceCharPosition api.PerformanceScriptTiming.sourceFunctionName api.PerformanceScriptTiming.sourceURL api.PerformanceScriptTiming.toJSON api.PerformanceScriptTiming.window api.PerformanceScriptTiming.windowAttribution
longtasks	Long tasks	The longtask performance event type and the PerformanceLongTaskTiming API provides information about tasks that occupy the UI thread for 50 milliseconds or more, a metric for input latency, delayed animations, and other sources of "jank."	api.PerformanceLongTaskTiming api.PerformanceLongTaskTiming.attribution api.PerformanceLongTaskTiming.toJSON api.TaskAttributionTiming api.TaskAttributionTiming.containerId api.TaskAttributionTiming.containerName api.TaskAttributionTiming.containerSrc api.TaskAttributionTiming.containerType api.TaskAttributionTiming.toJSON
magnetometer	Magnetometer	The Magnetometer API reads magnetic field sensor data from the device's magnetometer.	api.Magnetometer api.Magnetometer.Magnetometer api.Magnetometer.x api.Magnetometer.y api.Magnetometer.z html.elements.iframe.allow.magnetometer http.headers.Permissions-Policy.magnetometer
main	<main>	The <main> element represents the dominant content of a document. It is commonly used together with <header> and <footer>.	html.elements.main
managed-media-source	Managed media source	The ManagedMediaSource API is a MediaSource where the browser manages the memory of source buffers and may evict data if needed.	api.ManagedMediaSource api.ManagedMediaSource.ManagedMediaSource api.ManagedMediaSource.endstreaming_event api.ManagedMediaSource.startstreaming_event api.ManagedMediaSource.streaming api.ManagedSourceBuffer api.ManagedSourceBuffer.bufferedchange_event
manifest	Web app manifest	A web app manifest file provides metadata about the site. The browser can use the metadata to install the site as a standalone application on the user's device. The metadata usually includes the app's name, icon, description, and ways in which the app wishes to integrate with the device.	html.elements.link.rel.manifest html.manifest.background_color html.manifest.description html.manifest.display html.manifest.icons html.manifest.id html.manifest.name html.manifest.orientation html.manifest.scope html.manifest.serviceworker html.manifest.serviceworker.scope html.manifest.serviceworker.src html.manifest.serviceworker.use_cache html.manifest.short_name html.manifest.start_url html.manifest.theme_color
map	Map (initial support)	Map objects hold key-value pairs and remember the original insertion order of the keys.	javascript.builtins.Map javascript.builtins.Map.@@iterator javascript.builtins.Map.@@species javascript.builtins.Map.Map javascript.builtins.Map.Map.iterable_allowed javascript.builtins.Map.Map.null_allowed javascript.builtins.Map.clear javascript.builtins.Map.delete javascript.builtins.Map.entries javascript.builtins.Map.forEach javascript.builtins.Map.get javascript.builtins.Map.has javascript.builtins.Map.key_equality_for_zeros javascript.builtins.Map.keys javascript.builtins.Map.set javascript.builtins.Map.size javascript.builtins.Map.values
margin	margin	The margin CSS property sets space around an element. It is a shorthand for margin-top, margin-right, margin-bottom, and margin-left.	css.properties.margin css.properties.margin-bottom css.properties.margin-bottom.auto css.properties.margin-left css.properties.margin-left.auto css.properties.margin-right css.properties.margin-right.auto css.properties.margin-top css.properties.margin-top.auto css.properties.margin.auto
margin-trim	margin-trim	The margin-trim CSS property removes the margins of child elements when they meet the edges of the container.	css.properties.margin-trim css.properties.margin-trim.block css.properties.margin-trim.block-end css.properties.margin-trim.block-start css.properties.margin-trim.inline css.properties.margin-trim.inline-end css.properties.margin-trim.inline-start css.properties.margin-trim.none
mark	<mark>	The <mark> element represents text which is marked or highlighted for reference or notation purposes.	html.elements.mark
marker	::marker	The ::marker CSS pseudo-element selects list item markers for styling numbers or bullets.	css.selectors.marker css.selectors.marker.animation_and_transition_support
mask-border	mask-border	The mask-border CSS property sets how the edges of an element are masked. It is a shorthand for mask-border-outset, mask-border-repeat, mask-border-slice, mask-border-source, and mask-border-width.	css.properties.mask-border css.properties.mask-border-outset css.properties.mask-border-repeat css.properties.mask-border-slice css.properties.mask-border-source css.properties.mask-border-width
mask-type	mask-type	The mask-type CSS property on an SVG <mask> element sets whether the mask is a luminance or alpha mask.	css.properties.mask-type css.properties.mask-type.alpha css.properties.mask-type.luminance
masks	Masks	The mask CSS property (and several longhand properties) partially or completely hides an element according to the shape and depth of an image.	css.properties.mask css.properties.mask-clip css.properties.mask-clip.border css.properties.mask-clip.content css.properties.mask-clip.padding css.properties.mask-clip.text css.properties.mask-composite css.properties.mask-composite.add css.properties.mask-composite.exclude css.properties.mask-composite.intersect css.properties.mask-composite.subtract css.properties.mask-image css.properties.mask-image.multiple_mask_images css.properties.mask-image.svg_masks css.properties.mask-mode css.properties.mask-mode.alpha css.properties.mask-mode.luminance css.properties.mask-mode.match-source css.properties.mask-origin css.properties.mask-origin.border css.properties.mask-origin.content css.properties.mask-origin.fill-box css.properties.mask-origin.padding css.properties.mask-origin.stroke-box css.properties.mask-origin.view-box css.properties.mask-position css.properties.mask-repeat css.properties.mask-size
masonry	Masonry	Masonry is a type of CSS grid layout where the items on one of the axes are tightly packed together, like brickwork, instead of leaving gaps to align across the other axis.	css.properties.grid-template-columns.masonry css.properties.grid-template-rows.masonry
matchmedia	matchMedia	The window.matchMedia() method checks whether a media query applies to the document.	api.MediaQueryList api.MediaQueryList.EventTarget_inheritance api.MediaQueryList.change_event api.MediaQueryList.matches api.MediaQueryList.media api.MediaQueryListEvent api.MediaQueryListEvent.MediaQueryListEvent api.MediaQueryListEvent.matches api.MediaQueryListEvent.media api.Window.matchMedia
mathml	MathML	MathML, or the Mathematical Markup Language, describes mathematical notation, such as expressions and formulas. Also known as MathML Core.	api.MathMLElement api.MathMLElement.attributeStyleMap api.MathMLElement.blur api.MathMLElement.focus api.MathMLElement.nonce api.MathMLElement.style api.MathMLElement.tabIndex css.properties.display.math css.properties.font-size.math css.properties.math-depth css.properties.math-shift css.properties.math-style css.properties.text-transform.math-auto mathml.attribute_values.named_space mathml.attribute_values.nonzero_unitless_values mathml.elements.annotation mathml.elements.annotation-xml mathml.elements.math mathml.elements.math.display mathml.elements.menclose mathml.elements.menclose.notation mathml.elements.menclose.notation.actuarial mathml.elements.menclose.notation.bottom mathml.elements.menclose.notation.box mathml.elements.menclose.notation.circle mathml.elements.menclose.notation.downdiagonalstrike mathml.elements.menclose.notation.horizontalstrike mathml.elements.menclose.notation.left mathml.elements.menclose.notation.longdiv mathml.elements.menclose.notation.madruwb mathml.elements.menclose.notation.phasorangle mathml.elements.menclose.notation.right mathml.elements.menclose.notation.roundedbox mathml.elements.menclose.notation.top mathml.elements.menclose.notation.updiagonalarrow mathml.elements.menclose.notation.updiagonalstrike mathml.elements.menclose.notation.verticalstrike mathml.elements.merror mathml.elements.mfrac mathml.elements.mfrac.linethickness mathml.elements.mi mathml.elements.mi.mathvariant mathml.elements.mmultiscripts mathml.elements.mn mathml.elements.mo mathml.elements.mo.accent mathml.elements.mo.form mathml.elements.mo.largeop mathml.elements.mo.lspace mathml.elements.mo.maxsize mathml.elements.mo.minsize mathml.elements.mo.movablelimits mathml.elements.mo.rspace mathml.elements.mo.stretchy mathml.elements.mo.symmetric mathml.elements.mover mathml.elements.mover.accent mathml.elements.mpadded mathml.elements.mpadded.depth mathml.elements.mpadded.height mathml.elements.mpadded.lspace mathml.elements.mpadded.relative_values mathml.elements.mpadded.voffset mathml.elements.mpadded.width mathml.elements.mphantom mathml.elements.mprescripts mathml.elements.mroot mathml.elements.mrow mathml.elements.ms mathml.elements.mspace mathml.elements.mspace.depth mathml.elements.mspace.height mathml.elements.mspace.width mathml.elements.msqrt mathml.elements.mstyle mathml.elements.msub mathml.elements.msubsup mathml.elements.msup mathml.elements.mtable mathml.elements.mtable.align mathml.elements.mtable.columnalign mathml.elements.mtable.columnlines mathml.elements.mtable.columnspacing mathml.elements.mtable.frame mathml.elements.mtable.framespacing mathml.elements.mtable.rowalign mathml.elements.mtable.rowlines mathml.elements.mtable.rowspacing mathml.elements.mtable.width mathml.elements.mtd mathml.elements.mtd.columnalign mathml.elements.mtd.columnspan mathml.elements.mtd.rowalign mathml.elements.mtd.rowspan mathml.elements.mtext mathml.elements.mtr mathml.elements.mtr.columnalign mathml.elements.mtr.rowalign mathml.elements.munder mathml.elements.munder.accentunder mathml.elements.munderover mathml.elements.munderover.accent mathml.elements.munderover.accentunder mathml.elements.semantics mathml.global_attributes.dir mathml.global_attributes.displaystyle mathml.global_attributes.href mathml.global_attributes.scriptlevel
measure-memory	Memory measurement	The measureUserAgentSpecificMemory() method estimates the memory usage of a web application including all its iframes and workers.	api.Performance.measureUserAgentSpecificMemory
media-capabilities	Media capabilities	The navigator.mediaCapabilities API queries the encoding and decoding abilities of the device, such as supported codecs, resolutions, and bitrates.	api.InputDeviceInfo.getCapabilities api.MediaCapabilities api.MediaCapabilities.decodingInfo api.MediaCapabilities.encodingInfo api.MediaStreamTrack.getCapabilities api.Navigator.mediaCapabilities api.WorkerNavigator.mediaCapabilities
media-capture	Media capture	The navigator.mediaDevices.getUserMedia() API requests access to devices that produce audio or video streams, such as microphones or video cameras.	api.InputDeviceInfo api.MediaDeviceInfo api.MediaDeviceInfo.deviceId api.MediaDeviceInfo.groupId api.MediaDeviceInfo.kind api.MediaDeviceInfo.label api.MediaDeviceInfo.toJSON api.MediaDevices api.MediaDevices.devicechange_event api.MediaDevices.enumerateDevices api.MediaDevices.getSupportedConstraints api.MediaDevices.getUserMedia api.MediaDevices.getUserMedia.secure_context_required api.MediaStream api.MediaStream.MediaStream api.MediaStream.active api.MediaStream.addTrack api.MediaStream.addtrack_event api.MediaStream.clone api.MediaStream.getAudioTracks api.MediaStream.getTrackById api.MediaStream.getTracks api.MediaStream.getVideoTracks api.MediaStream.id api.MediaStream.removeTrack api.MediaStream.removetrack_event api.MediaStreamTrack api.MediaStreamTrack.applyConstraints api.MediaStreamTrack.applyConstraints.aspectRatio_constraint api.MediaStreamTrack.applyConstraints.autoGainControl_constraint api.MediaStreamTrack.applyConstraints.channelCount_constraint api.MediaStreamTrack.applyConstraints.deviceId_constraint api.MediaStreamTrack.applyConstraints.echoCancellation_constraint api.MediaStreamTrack.applyConstraints.facingMode_constraint api.MediaStreamTrack.applyConstraints.frameRate_constraint api.MediaStreamTrack.applyConstraints.groupId_constraint api.MediaStreamTrack.applyConstraints.height_constraint api.MediaStreamTrack.applyConstraints.latency_constraint api.MediaStreamTrack.applyConstraints.noiseSuppression_constraint api.MediaStreamTrack.applyConstraints.resizeMode_constraint api.MediaStreamTrack.applyConstraints.sampleRate_constraint api.MediaStreamTrack.applyConstraints.sampleSize_constraint api.MediaStreamTrack.applyConstraints.width_constraint api.MediaStreamTrack.clone api.MediaStreamTrack.enabled api.MediaStreamTrack.ended_event api.MediaStreamTrack.getConstraints api.MediaStreamTrack.getSettings api.MediaStreamTrack.id api.MediaStreamTrack.kind api.MediaStreamTrack.label api.MediaStreamTrack.mute_event api.MediaStreamTrack.muted api.MediaStreamTrack.readyState api.MediaStreamTrack.stop api.MediaStreamTrack.unmute_event api.MediaStreamTrackEvent api.MediaStreamTrackEvent.MediaStreamTrackEvent api.MediaStreamTrackEvent.track api.Navigator.mediaDevices api.Navigator.mediaDevices.secure_context_required api.OverconstrainedError api.OverconstrainedError.OverconstrainedError api.OverconstrainedError.constraint html.elements.iframe.allow.camera html.elements.iframe.allow.microphone http.headers.Permissions-Policy.camera http.headers.Permissions-Policy.microphone
media-playback-quality	Media playback quality	The getVideoPlaybackQuality() method of HTMLVideoElement returns metrics that can be used to determine the playback quality of a video, such as how many frames were dropped.	api.HTMLVideoElement.getVideoPlaybackQuality api.VideoPlaybackQuality api.VideoPlaybackQuality.creationTime api.VideoPlaybackQuality.droppedVideoFrames api.VideoPlaybackQuality.totalVideoFrames
media-pseudos	Media element pseudo-classes	The :playing, :paused, :seeking, :buffering, :stalled, :muted, and :volume-locked CSS pseudo-classes match <audio> and <video> elements based on their state.	css.selectors.buffering css.selectors.muted css.selectors.paused css.selectors.playing css.selectors.seeking css.selectors.stalled css.selectors.volume-locked
media-queries	Media queries	The @media CSS rule conditionally applies styles based on the output device type, its capabilities, and the user's preferences. Media queries are composed of an optional media type such as screen or print, and one or more mandatory media features, such as prefers-reduced-animations.	css.at-rules.media css.at-rules.media.aspect-ratio css.at-rules.media.calc css.at-rules.media.color css.at-rules.media.color-index css.at-rules.media.grid css.at-rules.media.height css.at-rules.media.media_features css.at-rules.media.media_query_values css.at-rules.media.monochrome css.at-rules.media.nested-queries css.at-rules.media.or_syntax css.at-rules.media.orientation css.at-rules.media.width css.types.ratio css.types.ratio.number_value
media-query-range-syntax	Media query range syntax	The range syntax of CSS media queries allows you to use mathematical comparison operators such as <, >, <=, and >= to define a range of values for a media query. For example, (400px < width < 1000px) returns true if the viewport width is between 400px and 1000px.	css.at-rules.media.range_syntax
media-session	Media session	The navigator.mediaSession API integrates with platform UI for media playback. It can be used to set metadata such as title and artwork, and to handle user actions like playing, pausing, or seeking.	api.ChapterInformation api.ChapterInformation.artwork api.ChapterInformation.startTime api.ChapterInformation.title api.MediaMetadata api.MediaMetadata.MediaMetadata api.MediaMetadata.album api.MediaMetadata.artist api.MediaMetadata.artwork api.MediaMetadata.chapterInfo api.MediaMetadata.title api.MediaSession api.MediaSession.metadata api.MediaSession.playbackState api.MediaSession.setActionHandler api.MediaSession.setActionHandler.hangup_type api.MediaSession.setActionHandler.nextslide_type api.MediaSession.setActionHandler.nexttrack_type api.MediaSession.setActionHandler.pause_type api.MediaSession.setActionHandler.play_type api.MediaSession.setActionHandler.previousslide_type api.MediaSession.setActionHandler.previoustrack_type api.MediaSession.setActionHandler.seekbackward_type api.MediaSession.setActionHandler.seekforward_type api.MediaSession.setActionHandler.seekto_type api.MediaSession.setActionHandler.skipad_type api.MediaSession.setActionHandler.stop_type api.MediaSession.setActionHandler.togglecamera_type api.MediaSession.setActionHandler.togglemicrophone_type api.MediaSession.setCameraActive api.MediaSession.setMicrophoneActive api.MediaSession.setPositionState api.Navigator.mediaSession
media-source	Media source	The MediaSource API is a custom data source for media elements commonly used for adaptive streaming. Also known as Media Source Extensions (MSE).	api.AudioTrack.sourceBuffer api.BufferedChangeEvent api.BufferedChangeEvent.BufferedChangeEvent api.BufferedChangeEvent.addedRanges api.BufferedChangeEvent.removedRanges api.HTMLMediaElement.srcObject api.MediaSource api.MediaSource.MediaSource api.MediaSource.activeSourceBuffers api.MediaSource.addSourceBuffer api.MediaSource.canConstructInDedicatedWorker_static api.MediaSource.clearLiveSeekableRange api.MediaSource.duration api.MediaSource.endOfStream api.MediaSource.handle api.MediaSource.isTypeSupported_static api.MediaSource.readyState api.MediaSource.removeSourceBuffer api.MediaSource.setLiveSeekableRange api.MediaSource.sourceBuffers api.MediaSource.sourceclose_event api.MediaSource.sourceended_event api.MediaSource.sourceopen_event api.MediaSource.worker_support api.MediaSourceHandle api.SourceBuffer api.SourceBuffer.abort api.SourceBuffer.abort.worker_support api.SourceBuffer.abort_event api.SourceBuffer.abort_event.worker_support api.SourceBuffer.appendBuffer api.SourceBuffer.appendBuffer.worker_support api.SourceBuffer.appendWindowEnd api.SourceBuffer.appendWindowEnd.worker_support api.SourceBuffer.appendWindowStart api.SourceBuffer.appendWindowStart.worker_support api.SourceBuffer.audioTracks api.SourceBuffer.audioTracks.worker_support api.SourceBuffer.buffered api.SourceBuffer.buffered.worker_support api.SourceBuffer.changeType api.SourceBuffer.changeType.worker_support api.SourceBuffer.error_event api.SourceBuffer.error_event.worker_support api.SourceBuffer.mode api.SourceBuffer.mode.worker_support api.SourceBuffer.remove api.SourceBuffer.remove.worker_support api.SourceBuffer.textTracks api.SourceBuffer.timestampOffset api.SourceBuffer.timestampOffset.worker_support api.SourceBuffer.update_event api.SourceBuffer.update_event.worker_support api.SourceBuffer.updateend_event api.SourceBuffer.updateend_event.worker_support api.SourceBuffer.updatestart_event api.SourceBuffer.updatestart_event.worker_support api.SourceBuffer.updating api.SourceBuffer.updating.worker_support api.SourceBuffer.videoTracks api.SourceBuffer.videoTracks.worker_support api.SourceBufferList api.SourceBufferList.addsourcebuffer_event api.SourceBufferList.addsourcebuffer_event.worker_support api.SourceBufferList.length api.SourceBufferList.length.worker_support api.SourceBufferList.removesourcebuffer_event api.SourceBufferList.removesourcebuffer_event.worker_support api.TextTrack.sourceBuffer api.VideoTrack.sourceBuffer
mediastream-recording	MediaStream recording	The MediaRecorder API captures data generated by MediaStream or HTMLMediaElement objects for analysis, processing, or saving to disk. Also known as the Media Recording API or the MediaRecorder API.	api.BlobEvent api.BlobEvent.BlobEvent api.BlobEvent.data api.BlobEvent.timecode api.MediaRecorder api.MediaRecorder.MediaRecorder api.MediaRecorder.MediaRecorder.options_parameter api.MediaRecorder.audioBitrateMode api.MediaRecorder.audioBitsPerSecond api.MediaRecorder.dataavailable_event api.MediaRecorder.error_event api.MediaRecorder.isTypeSupported_static api.MediaRecorder.mimeType api.MediaRecorder.pause api.MediaRecorder.pause_event api.MediaRecorder.requestData api.MediaRecorder.resume api.MediaRecorder.resume_event api.MediaRecorder.start api.MediaRecorder.start_event api.MediaRecorder.state api.MediaRecorder.stop api.MediaRecorder.stop_event api.MediaRecorder.stream api.MediaRecorder.videoBitsPerSecond
menu	<menu>	The <menu> element represents an unordered list of action items (<li>), such as a toolbar. It is a semantic alternative to the <ul> element.	api.HTMLMenuElement html.elements.menu
messageerror	messageerror	The messageerror event fires on a target, such as a window or worker, when an incoming message cannot be deserialized. This event can fire for many types of messages, such as cross-document messages or broadcast channel messages.	api.DedicatedWorkerGlobalScope.messageerror_event api.MessagePort.messageerror_event api.ServiceWorkerContainer.messageerror_event api.Window.messageerror_event
meta	<meta>	The <meta> element represents metadata about the page used by the browser or search engines, including description, keywords, and character sets.	api.HTMLMetaElement api.HTMLMetaElement.content api.HTMLMetaElement.httpEquiv api.HTMLMetaElement.media api.HTMLMetaElement.name html.elements.meta html.elements.meta.charset html.elements.meta.content html.elements.meta.http-equiv html.elements.meta.http-equiv.content-type html.elements.meta.http-equiv.refresh html.elements.meta.name html.elements.meta.name.referrer
meta-theme-color	<meta name="theme-color">	The name="theme-color" attribute for the <meta> HTML element sets the preferred color to customize the display of the page or the surrounding browser user interface.	html.elements.meta.name.theme-color
min-max-clamp	min(), max(), and clamp()	The min() and max() CSS functions return the minimum or maximum of the arguments, while clamp() clamps a value to a given range.	css.types.clamp css.types.max css.types.min
min-max-content	min-content and max-content	The min-content and max-content CSS keywords represent the smallest and largest intrinsic sizes of an element.	css.properties.height.max-content css.properties.height.min-content css.properties.max-height.max-content css.properties.max-height.min-content css.properties.max-width.max-content css.properties.max-width.min-content css.properties.min-height.max-content css.properties.min-height.min-content css.properties.min-width.max-content css.properties.min-width.min-content css.properties.width.max-content css.properties.width.min-content
min-max-width-height	Min and max width and height	The min-width, min-height, max-width, and max-height CSS properties set the minimum and maximum size of an element.	css.properties.max-height css.properties.max-height.none css.properties.max-width css.properties.max-width.none css.properties.min-height css.properties.min-height.auto css.properties.min-width css.properties.min-width.auto
mix-blend-mode	mix-blend-mode	The mix-blend-mode CSS property blends an element's content with its background or parent elements using blend modes like multiply, difference, or color.	css.properties.mix-blend-mode css.properties.mix-blend-mode.plus-darker css.properties.mix-blend-mode.plus-lighter css.properties.mix-blend-mode.svg_elements
mixed-content	Mixed content handling	When a document is loaded over HTTPS, browsers ensure that none of the document's resources are loaded over an insecure protocol. Instead, resources that the document attempts to load over an insecure protocol are either loaded over HTTPS or are blocked.	http.mixed-content http.mixed-content.allow_file_urls http.mixed-content.allow_localhost_url http.mixed-content.allow_loopback_url http.mixed-content.auto_upgrade_images http.mixed-content.auto_upgrade_video_audio http.mixed-content.block_mixed_downloads http.mixed-content.blockable_mixed_content
modal	:modal	The :modal pseudo-class selects elements that put other elements into a non-interactive state, such as a fullscreen element or a <dialog> element used with showModal().	css.selectors.modal
modulepreload	<link rel="modulepreload">	The rel="modulepreload" attribute for the <link> HTML element indicates that a module script should be fetched, parsed, and compiled preemptively, and stored for later execution.	html.elements.link.rel.modulepreload
motion-path	Motion path	The offset CSS property animates an element along a defined motion path.	css.properties.offset css.properties.offset-anchor css.properties.offset-anchor.auto css.properties.offset-anchor.bottom css.properties.offset-anchor.center css.properties.offset-anchor.left css.properties.offset-anchor.right css.properties.offset-anchor.top css.properties.offset-distance css.properties.offset-path css.properties.offset-path.basic_shape css.properties.offset-path.border-box css.properties.offset-path.content-box css.properties.offset-path.fill-box css.properties.offset-path.margin-box css.properties.offset-path.none css.properties.offset-path.padding-box css.properties.offset-path.path css.properties.offset-path.ray css.properties.offset-path.stroke-box css.properties.offset-path.url css.properties.offset-path.view-box css.properties.offset-position css.properties.offset-position.auto css.properties.offset-position.bottom css.properties.offset-position.center css.properties.offset-position.left css.properties.offset-position.normal css.properties.offset-position.right css.properties.offset-position.top css.properties.offset-rotate css.properties.offset-rotate.auto css.properties.offset-rotate.reverse css.types.ray css.types.ray.position css.types.ray.size
mouse-events	Mouse events	Mouse events, such as click, mousedown, or mousemove, fire when users interact with an input or pointing device such as a mouse, trackpad, or touchscreen.	api.Element.auxclick_event api.Element.click_event api.Element.contextmenu_event api.Element.dblclick_event api.Element.mousedown_event api.Element.mouseenter_event api.Element.mouseleave_event api.Element.mousemove_event api.Element.mouseout_event api.Element.mouseover_event api.Element.mouseup_event api.HTMLElement.click api.MouseEvent api.MouseEvent.MouseEvent api.MouseEvent.altKey api.MouseEvent.button api.MouseEvent.buttons api.MouseEvent.clientX api.MouseEvent.clientY api.MouseEvent.ctrlKey api.MouseEvent.getModifierState api.MouseEvent.metaKey api.MouseEvent.movementX api.MouseEvent.movementY api.MouseEvent.offsetX api.MouseEvent.offsetY api.MouseEvent.pageX api.MouseEvent.pageY api.MouseEvent.relatedTarget api.MouseEvent.screenX api.MouseEvent.screenY api.MouseEvent.shiftKey api.MouseEvent.x api.MouseEvent.y
multi-column	Multi-column layout	Multi-column layout flows an element's content across one or more columns in a single row, without affecting the display property of its children.	css.properties.align-content.multicol_context css.properties.column-count css.properties.column-count.auto css.properties.column-gap css.properties.column-gap.multicol_context css.properties.column-gap.multicol_context.calc_values css.properties.column-gap.multicol_context.percentage_values css.properties.column-rule css.properties.column-rule-color css.properties.column-rule-style css.properties.column-rule-width css.properties.column-width css.properties.column-width.auto css.properties.columns css.properties.gap.multicol_context
mutation-events	Mutation events	Mutation events like DOMSubtreeModified, DOMNodeInserted, or DOMNodeRemoved fire when DOM changes occur.	api.MutationEvent api.MutationEvent.attrChange api.MutationEvent.attrName api.MutationEvent.initMutationEvent api.MutationEvent.newValue api.MutationEvent.prevValue api.MutationEvent.relatedNode
mutationobserver	MutationObserver	The MutationObserver API watches for changes to the DOM tree and calls a callback function when DOM changes occur.	api.MutationObserver api.MutationObserver.MutationObserver api.MutationObserver.disconnect api.MutationObserver.observe api.MutationObserver.takeRecords api.MutationRecord api.MutationRecord.addedNodes api.MutationRecord.attributeName api.MutationRecord.attributeNamespace api.MutationRecord.nextSibling api.MutationRecord.oldValue api.MutationRecord.previousSibling api.MutationRecord.removedNodes api.MutationRecord.target api.MutationRecord.type
named-color	Named colors	Some CSS color values can be referenced by name, such as red or limegreen. They stand in for specific RGB color values.	css.types.color.named-color css.types.color.named-color.rebeccapurple css.types.color.named-color.transparent
namespace	@namespace	The @namespace CSS rule sets a default namespace or namespace prefix. Namespace prefixes allow CSS selectors to distinguish elements with the same name but different document types, such as the HTML <a> element and the SVG <a> element.	api.CSSNamespaceRule api.CSSNamespaceRule.namespaceURI api.CSSNamespaceRule.prefix css.at-rules.namespace css.selectors.namespace
nav	<nav>	The <nav> element represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents.	html.elements.nav
navigation	Navigation API	The navigation API initiates, intercepts, or modifies browser navigation actions. Not to be confused with the navigator API.	api.NavigateEvent api.NavigateEvent.NavigateEvent api.NavigateEvent.canIntercept api.NavigateEvent.destination api.NavigateEvent.downloadRequest api.NavigateEvent.formData api.NavigateEvent.hasUAVisualTransition api.NavigateEvent.hashChange api.NavigateEvent.info api.NavigateEvent.intercept api.NavigateEvent.navigationType api.NavigateEvent.scroll api.NavigateEvent.signal api.NavigateEvent.userInitiated api.Navigation api.Navigation.activation api.Navigation.back api.Navigation.canGoBack api.Navigation.canGoForward api.Navigation.currentEntry api.Navigation.currententrychange_event api.Navigation.entries api.Navigation.forward api.Navigation.navigate api.Navigation.navigate_event api.Navigation.navigateerror_event api.Navigation.navigatesuccess_event api.Navigation.reload api.Navigation.transition api.Navigation.traverseTo api.Navigation.updateCurrentEntry api.NavigationActivation api.NavigationActivation.entry api.NavigationActivation.from api.NavigationActivation.navigationType api.NavigationCurrentEntryChangeEvent api.NavigationCurrentEntryChangeEvent.NavigationCurrentEntryChangeEvent api.NavigationCurrentEntryChangeEvent.from api.NavigationCurrentEntryChangeEvent.navigationType api.NavigationDestination api.NavigationDestination.getState api.NavigationDestination.id api.NavigationDestination.index api.NavigationDestination.key api.NavigationDestination.sameDocument api.NavigationDestination.url api.NavigationHistoryEntry api.NavigationHistoryEntry.dispose_event api.NavigationHistoryEntry.getState api.NavigationHistoryEntry.id api.NavigationHistoryEntry.index api.NavigationHistoryEntry.key api.NavigationHistoryEntry.sameDocument api.NavigationHistoryEntry.url api.NavigationTransition api.NavigationTransition.finished api.NavigationTransition.from api.NavigationTransition.navigationType api.Window.navigation
navigation-timing	Navigation timing	The navigation performance entry and the PerformanceNavigationTiming API measures navigation events, such as loading time or the number of redirects.	api.PerformanceNavigationTiming api.PerformanceNavigationTiming.criticalCHRestart api.PerformanceNavigationTiming.domComplete api.PerformanceNavigationTiming.domContentLoadedEventEnd api.PerformanceNavigationTiming.domContentLoadedEventStart api.PerformanceNavigationTiming.domInteractive api.PerformanceNavigationTiming.loadEventEnd api.PerformanceNavigationTiming.loadEventStart api.PerformanceNavigationTiming.redirectCount api.PerformanceNavigationTiming.toJSON api.PerformanceNavigationTiming.type api.PerformanceNavigationTiming.unloadEventEnd api.PerformanceNavigationTiming.unloadEventStart
navigator	Navigator	The window.navigator API is a generic global object, under which many other, more interesting APIs are located. It doesn't do anything interesting on its own.	api.Navigator api.Window.navigator
nesting	Nesting	CSS nesting allows for shorter selectors, easier reading, and more modularity by nesting rules inside others.	api.CSSNestedDeclarations api.CSSNestedDeclarations.style api.CSSStyleRule.cssRules api.CSSStyleRule.deleteRule api.CSSStyleRule.insertRule css.selectors.nesting
network-information	Network Information	The navigator.connection API provides information about the network connection a device is using and fires events when the connection type changes.	api.Navigator.connection api.NetworkInformation api.NetworkInformation.change_event api.NetworkInformation.downlink api.NetworkInformation.downlinkMax api.NetworkInformation.effectiveType api.NetworkInformation.rtt api.NetworkInformation.type api.NetworkInformation.worker_support api.WorkerNavigator.connection http.headers.Downlink http.headers.ECT http.headers.RTT
non-cookie-storage-access	Non-cookie storage access	Non-cookie storage access extends the requestStorageAccess() API to let content in cross-site iframes request access to first-party data beyond cookies.	api.Document.hasUnpartitionedCookieAccess api.Document.requestStorageAccess.types_parameter api.Document.requestStorageAccess.types_parameter.types_BroadcastChannel_parameter api.Document.requestStorageAccess.types_parameter.types_SharedWorker_parameter api.Document.requestStorageAccess.types_parameter.types_all_parameter api.Document.requestStorageAccess.types_parameter.types_caches_parameter api.Document.requestStorageAccess.types_parameter.types_cookies_parameter api.Document.requestStorageAccess.types_parameter.types_createObjectURL_parameter api.Document.requestStorageAccess.types_parameter.types_estimate_parameter api.Document.requestStorageAccess.types_parameter.types_getDirectory_parameter api.Document.requestStorageAccess.types_parameter.types_indexedDB_parameter api.Document.requestStorageAccess.types_parameter.types_localStorage_parameter api.Document.requestStorageAccess.types_parameter.types_locks_parameter api.Document.requestStorageAccess.types_parameter.types_revokeObjectURL_parameter api.Document.requestStorageAccess.types_parameter.types_sessionStorage_parameter api.SharedWorker.SharedWorker.options_sameSiteCookies_parameter api.StorageAccessHandle api.StorageAccessHandle.BroadcastChannel api.StorageAccessHandle.SharedWorker api.StorageAccessHandle.caches api.StorageAccessHandle.createObjectURL api.StorageAccessHandle.estimate api.StorageAccessHandle.getDirectory api.StorageAccessHandle.indexedDB api.StorageAccessHandle.localStorage api.StorageAccessHandle.locks api.StorageAccessHandle.revokeObjectURL api.StorageAccessHandle.sessionStorage
not	:not()	The :not() functional pseudo-class matches elements that do not match the selectors in its argument.	css.selectors.not css.selectors.not.selector_list
notifications	Notifications	The Notification() constructor shows a message to the user, typically using the notification system of the host operating system.	api.Notification api.Notification.Notification api.Notification.actions api.Notification.badge api.Notification.body api.Notification.click_event api.Notification.close api.Notification.close_event api.Notification.data api.Notification.dir api.Notification.error_event api.Notification.icon api.Notification.image api.Notification.lang api.Notification.maxActions_static api.Notification.permission_static api.Notification.renotify api.Notification.requestPermission_static api.Notification.requireInteraction api.Notification.show_event api.Notification.silent api.Notification.tag api.Notification.timestamp api.Notification.title api.Notification.vibrate api.NotificationEvent api.NotificationEvent.NotificationEvent api.NotificationEvent.action api.NotificationEvent.notification api.ServiceWorkerGlobalScope.notificationclick_event api.ServiceWorkerGlobalScope.notificationclose_event api.ServiceWorkerRegistration.getNotifications api.ServiceWorkerRegistration.showNotification
notifications-apps	Notifications from service workers and installed apps	Notifications via service worker registration's showNotification() method, sent from installed web applications (for example, saved to the Home Screen on Safari for iOS), show a message to the user, typically using the notification system of the host operating system.
nth-child	:nth-child()	The :nth-child() and :nth-last-child() CSS functional pseudo-classes match elements based on their index within a list of elements. The :first-child and :last-child pseudo-classes match the first and last element in a list, and the :only-child pseudo-class matches an element with no siblings.	css.selectors.first-child css.selectors.first-child.no_parent_required css.selectors.last-child css.selectors.last-child.no_parent_required css.selectors.nth-child css.selectors.nth-child.no_parent_required css.selectors.nth-last-child css.selectors.nth-last-child.no_parent_required css.selectors.only-child css.selectors.only-child.no_parent_required
nth-child-of	:nth-child() of <selector>	The of syntax for the :nth-child() and :nth-last-child() CSS functional pseudo-classes match elements by the relative position of elements, counted from the first or last sibling matching a selector list.	css.selectors.nth-child.of_syntax css.selectors.nth-last-child.of_syntax
nth-of-type	:nth-of-type() pseudo-classes	The :nth-of-type() and :nth-last-of-type() CSS functional pseudo-classes match elements based on their position among siblings of the same type. The :first-of-type, :last-of-type, and :only-of-type` pseudo-classes match the first, last, and only elements of its type.	css.selectors.first-of-type css.selectors.last-of-type css.selectors.nth-last-of-type css.selectors.nth-of-type css.selectors.only-of-type
nullish-coalescing	Nullish coalescing	The nullish coalescing (??) and nullish coalescing assignment (??=) operators return (or assign) its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand.	javascript.operators.nullish_coalescing javascript.operators.nullish_coalescing_assignment
number	Math and numbers	The number type (and Number object) represents floating-point numbers, such as 42 or -4.201, while the Math API contains mathematical functions and constants. JavaScript can also represent boundless negative and positive values as Infinity or not-a-number as NaN (as in 0 * Infinity).	javascript.builtins.Infinity javascript.builtins.Math javascript.builtins.Math.E javascript.builtins.Math.LN10 javascript.builtins.Math.LN2 javascript.builtins.Math.LOG10E javascript.builtins.Math.LOG2E javascript.builtins.Math.PI javascript.builtins.Math.SQRT1_2 javascript.builtins.Math.SQRT2 javascript.builtins.Math.abs javascript.builtins.Math.acos javascript.builtins.Math.acosh javascript.builtins.Math.asin javascript.builtins.Math.asinh javascript.builtins.Math.atan javascript.builtins.Math.atan2 javascript.builtins.Math.atanh javascript.builtins.Math.cbrt javascript.builtins.Math.ceil javascript.builtins.Math.clz32 javascript.builtins.Math.cos javascript.builtins.Math.cosh javascript.builtins.Math.exp javascript.builtins.Math.expm1 javascript.builtins.Math.floor javascript.builtins.Math.fround javascript.builtins.Math.hypot javascript.builtins.Math.imul javascript.builtins.Math.log javascript.builtins.Math.log10 javascript.builtins.Math.log1p javascript.builtins.Math.log2 javascript.builtins.Math.max javascript.builtins.Math.min javascript.builtins.Math.pow javascript.builtins.Math.random javascript.builtins.Math.round javascript.builtins.Math.sign javascript.builtins.Math.sin javascript.builtins.Math.sinh javascript.builtins.Math.sqrt javascript.builtins.Math.tan javascript.builtins.Math.tanh javascript.builtins.Math.trunc javascript.builtins.NaN javascript.builtins.Number javascript.builtins.Number.EPSILON javascript.builtins.Number.MAX_SAFE_INTEGER javascript.builtins.Number.MAX_VALUE javascript.builtins.Number.MIN_SAFE_INTEGER javascript.builtins.Number.MIN_VALUE javascript.builtins.Number.NEGATIVE_INFINITY javascript.builtins.Number.NaN javascript.builtins.Number.Number javascript.builtins.Number.POSITIVE_INFINITY javascript.builtins.Number.isFinite javascript.builtins.Number.isInteger javascript.builtins.Number.isNaN javascript.builtins.Number.isSafeInteger javascript.builtins.Number.parseFloat javascript.builtins.Number.parseInt javascript.builtins.Number.toExponential javascript.builtins.Number.toFixed javascript.builtins.Number.toPrecision javascript.builtins.Number.toString javascript.builtins.Number.valueOf javascript.builtins.isNaN javascript.builtins.parseInt javascript.builtins.parseInt.leading_zero_strings_as_decimal javascript.grammar.binary_numeric_literals javascript.grammar.decimal_numeric_literals javascript.grammar.hexadecimal_numeric_literals javascript.grammar.octal_numeric_literals
numeric-factory-functions	Numeric factory functions	The numeric factory functions, such as CSS.px() or CSS.kHz(), return a CSSUnitValue representing a CSS number value (as in 12px or 440kHz).	api.CSS.Hz_static api.CSS.Q_static api.CSS.cap_static api.CSS.ch_static api.CSS.cm_static api.CSS.cqb_static api.CSS.cqh_static api.CSS.cqi_static api.CSS.cqmax_static api.CSS.cqmin_static api.CSS.cqw_static api.CSS.deg_static api.CSS.dpcm_static api.CSS.dpi_static api.CSS.dppx_static api.CSS.dvb_static api.CSS.dvh_static api.CSS.dvi_static api.CSS.dvmax_static api.CSS.dvmin_static api.CSS.dvw_static api.CSS.em_static api.CSS.ex_static api.CSS.fr_static api.CSS.grad_static api.CSS.ic_static api.CSS.in_static api.CSS.kHz_static api.CSS.lh_static api.CSS.lvb_static api.CSS.lvh_static api.CSS.lvi_static api.CSS.lvmax_static api.CSS.lvmin_static api.CSS.lvw_static api.CSS.mm_static api.CSS.ms_static api.CSS.number_static api.CSS.pc_static api.CSS.percent_static api.CSS.pt_static api.CSS.px_static api.CSS.rad_static api.CSS.rcap_static api.CSS.rch_static api.CSS.rem_static api.CSS.rex_static api.CSS.ric_static api.CSS.rlh_static api.CSS.s_static api.CSS.svb_static api.CSS.svh_static api.CSS.svi_static api.CSS.svmax_static api.CSS.svmin_static api.CSS.svw_static api.CSS.turn_static api.CSS.vb_static api.CSS.vh_static api.CSS.vi_static api.CSS.vmax_static api.CSS.vmin_static api.CSS.vw_static
numeric-seperators	Numeric separators	To improve readability for numeric literals, underscores (_) can be used as separators. For example, 1_050.95 is equivalent to 1050.95.	javascript.grammar.numeric_separators
object	<object>	The <object> element represents an external resource such as a PDF or SVG document. It was historically used for plugins such as Shockwave Flash.	api.HTMLObjectElement api.HTMLObjectElement.contentDocument api.HTMLObjectElement.contentWindow api.HTMLObjectElement.data api.HTMLObjectElement.form api.HTMLObjectElement.getSVGDocument api.HTMLObjectElement.height api.HTMLObjectElement.name api.HTMLObjectElement.type api.HTMLObjectElement.width html.elements.object html.elements.object.data html.elements.object.form html.elements.object.height html.elements.object.name html.elements.object.type html.elements.object.width
object-fit	object-fit	The object-fit CSS property sets how images, videos, and other replaced elements are scaled within their container.	css.properties.object-fit css.properties.object-fit.contain css.properties.object-fit.cover css.properties.object-fit.fill css.properties.object-fit.none css.properties.object-fit.scale-down
object-object	Object	Objects in JavaScript are collections of key-value pairs.	javascript.builtins.Object javascript.builtins.Object.Object javascript.builtins.Object.assign javascript.builtins.Object.constructor javascript.builtins.Object.create javascript.builtins.Object.defineProperties javascript.builtins.Object.defineProperty javascript.builtins.Object.entries javascript.builtins.Object.freeze javascript.builtins.Object.fromEntries javascript.builtins.Object.getOwnPropertyDescriptor javascript.builtins.Object.getOwnPropertyDescriptors javascript.builtins.Object.getOwnPropertyNames javascript.builtins.Object.getOwnPropertySymbols javascript.builtins.Object.getPrototypeOf javascript.builtins.Object.hasOwn javascript.builtins.Object.hasOwnProperty javascript.builtins.Object.is javascript.builtins.Object.isExtensible javascript.builtins.Object.isFrozen javascript.builtins.Object.isPrototypeOf javascript.builtins.Object.isSealed javascript.builtins.Object.keys javascript.builtins.Object.preventExtensions javascript.builtins.Object.preventExtensions.ES2015_behavior javascript.builtins.Object.propertyIsEnumerable javascript.builtins.Object.seal javascript.builtins.Object.setPrototypeOf javascript.builtins.Object.toString javascript.builtins.Object.valueOf javascript.builtins.Object.values javascript.grammar.shorthand_object_literals javascript.operators.object_initializer javascript.operators.object_initializer.computed_property_names javascript.operators.object_initializer.shorthand_method_names javascript.operators.object_initializer.shorthand_property_names javascript.operators.object_initializer.spread_properties javascript.operators.optional_chaining
object-position	object-position	The object-position CSS property places images, videos, and other replaced elements within their boxes.	css.properties.object-position
object-view-box	object-view-box	The object-view-box CSS property crops and zooms to an inset area of an image.	css.properties.object-view-box css.properties.object-view-box.none
oes-element-index-uint	OES_element_index_uint WebGL extension	The OES_element_index_uint extension for WebGL 1.0 contexts adds support for gl.UNSIGNED_INT types to WebGLRenderingContext.drawElements().	api.OES_element_index_uint
oes-fbo-render-mipmap	OES_fbo_render_mipmap WebGL extension	The OES_fbo_render_mipmap extension for WebGL 1.0 contexts attaches any level of a texture to a framebuffer object.	api.OES_fbo_render_mipmap
oes-standard-derivatives	OES_standard_derivatives WebGL extension	The OES_standard_derivatives extension for WebGL 1.0 contexts adds the GLSL derivative functions dFdx, dFdy, and fwidth.	api.OES_standard_derivatives
oes-texture-float	OES_texture_float WebGL extension	The OES_texture_float extension for WebGL 1.0 contexts adds floating-point pixel types for textures.	api.OES_texture_float
oes-texture-float-linear	OES_texture_float_linear WebGL extension	The OES_texture_float_linear extension for WebGL 1.0 and 2.0 contexts adds linear filtering with floating-point pixel types for textures.	api.OES_texture_float_linear
oes-texture-half-float	OES_texture_half_float WebGL extension	The OES_texture_half_float extension for WebGL 1.0 contexts adds texture formats with 16-bit (also known as half float) and 32-bit floating-point components.	api.OES_texture_half_float
oes-texture-half-float-linear	OES_texture_half_float_linear WebGL extension	The OES_texture_half_float_linear extension for WebGL 1.0 contexts adds linear filtering with half floating-point pixel types for textures.	api.OES_texture_half_float_linear
oes-vertex-array-object	OES_vertex_array_object WebGL extension	The OES_vertex_array_object extension for WebGL 1.0 contexts adds vertex array objects (VAOs) which encapsulate vertex array states. These objects keep pointers to vertex data and names for different sets of vertex data.	api.OES_vertex_array_object api.OES_vertex_array_object.bindVertexArrayOES api.OES_vertex_array_object.createVertexArrayOES api.OES_vertex_array_object.deleteVertexArrayOES api.OES_vertex_array_object.isVertexArrayOES api.WebGLVertexArrayObjectOES
offline-audio-context	OfflineAudioContext	The OfflineAudioContext API represents an audio processing graph that writes to an AudioBuffer instead of an output device.	api.OfflineAudioCompletionEvent api.OfflineAudioCompletionEvent.OfflineAudioCompletionEvent api.OfflineAudioCompletionEvent.renderedBuffer api.OfflineAudioContext api.OfflineAudioContext.OfflineAudioContext api.OfflineAudioContext.OfflineAudioContext.options_parameter api.OfflineAudioContext.complete_event api.OfflineAudioContext.length api.OfflineAudioContext.resume api.OfflineAudioContext.startRendering api.OfflineAudioContext.startRendering.returns_promise api.OfflineAudioContext.suspend
offscreen-canvas	Offscreen canvas	The OffscreenCanvas API provides a canvas that can be drawn to off screen, with no dependencies on the DOM, which can be used to run heavy rendering operations inside a worker context.	api.HTMLCanvasElement.transferControlToOffscreen api.OffscreenCanvas api.OffscreenCanvas.OffscreenCanvas api.OffscreenCanvas.convertToBlob api.OffscreenCanvas.convertToBlob.option_type_parameter_webp api.OffscreenCanvas.getContext api.OffscreenCanvas.getContext.2d_context api.OffscreenCanvas.getContext.bitmaprenderer_context api.OffscreenCanvas.getContext.webgl2_context api.OffscreenCanvas.getContext.webgl_context api.OffscreenCanvas.height api.OffscreenCanvas.transferToImageBitmap api.OffscreenCanvas.width api.OffscreenCanvasRenderingContext2D api.OffscreenCanvasRenderingContext2D.arc api.OffscreenCanvasRenderingContext2D.arcTo api.OffscreenCanvasRenderingContext2D.beginPath api.OffscreenCanvasRenderingContext2D.bezierCurveTo api.OffscreenCanvasRenderingContext2D.canvas api.OffscreenCanvasRenderingContext2D.clearRect api.OffscreenCanvasRenderingContext2D.clip api.OffscreenCanvasRenderingContext2D.closePath api.OffscreenCanvasRenderingContext2D.createImageData api.OffscreenCanvasRenderingContext2D.createLinearGradient api.OffscreenCanvasRenderingContext2D.createPattern api.OffscreenCanvasRenderingContext2D.createRadialGradient api.OffscreenCanvasRenderingContext2D.direction api.OffscreenCanvasRenderingContext2D.drawImage api.OffscreenCanvasRenderingContext2D.ellipse api.OffscreenCanvasRenderingContext2D.fill api.OffscreenCanvasRenderingContext2D.fillRect api.OffscreenCanvasRenderingContext2D.fillStyle api.OffscreenCanvasRenderingContext2D.fillText api.OffscreenCanvasRenderingContext2D.filter api.OffscreenCanvasRenderingContext2D.font api.OffscreenCanvasRenderingContext2D.fontKerning api.OffscreenCanvasRenderingContext2D.fontStretch api.OffscreenCanvasRenderingContext2D.fontVariantCaps api.OffscreenCanvasRenderingContext2D.getImageData api.OffscreenCanvasRenderingContext2D.getLineDash api.OffscreenCanvasRenderingContext2D.getTransform api.OffscreenCanvasRenderingContext2D.globalAlpha api.OffscreenCanvasRenderingContext2D.globalCompositeOperation api.OffscreenCanvasRenderingContext2D.imageSmoothingEnabled api.OffscreenCanvasRenderingContext2D.imageSmoothingQuality api.OffscreenCanvasRenderingContext2D.isPointInPath api.OffscreenCanvasRenderingContext2D.isPointInStroke api.OffscreenCanvasRenderingContext2D.letterSpacing api.OffscreenCanvasRenderingContext2D.lineCap api.OffscreenCanvasRenderingContext2D.lineDashOffset api.OffscreenCanvasRenderingContext2D.lineJoin api.OffscreenCanvasRenderingContext2D.lineTo api.OffscreenCanvasRenderingContext2D.lineWidth api.OffscreenCanvasRenderingContext2D.measureText api.OffscreenCanvasRenderingContext2D.miterLimit api.OffscreenCanvasRenderingContext2D.moveTo api.OffscreenCanvasRenderingContext2D.putImageData api.OffscreenCanvasRenderingContext2D.quadraticCurveTo api.OffscreenCanvasRenderingContext2D.rect api.OffscreenCanvasRenderingContext2D.resetTransform api.OffscreenCanvasRenderingContext2D.restore api.OffscreenCanvasRenderingContext2D.rotate api.OffscreenCanvasRenderingContext2D.save api.OffscreenCanvasRenderingContext2D.scale api.OffscreenCanvasRenderingContext2D.setLineDash api.OffscreenCanvasRenderingContext2D.setTransform api.OffscreenCanvasRenderingContext2D.shadowBlur api.OffscreenCanvasRenderingContext2D.shadowColor api.OffscreenCanvasRenderingContext2D.shadowOffsetX api.OffscreenCanvasRenderingContext2D.shadowOffsetY api.OffscreenCanvasRenderingContext2D.stroke api.OffscreenCanvasRenderingContext2D.strokeRect api.OffscreenCanvasRenderingContext2D.strokeStyle api.OffscreenCanvasRenderingContext2D.strokeText api.OffscreenCanvasRenderingContext2D.textAlign api.OffscreenCanvasRenderingContext2D.textBaseline api.OffscreenCanvasRenderingContext2D.textRendering api.OffscreenCanvasRenderingContext2D.transform api.OffscreenCanvasRenderingContext2D.translate api.OffscreenCanvasRenderingContext2D.wordSpacing
oklab	Oklab and Oklch	The Oklab color space expresses colors in terms of lightness and how red/green and blue/yellow a color is, aiming to match how humans perceive colors. Oklch is a variant of Oklab with polar coordinates. These color spaces can be used with the CSS color(), oklab(), and oklch() functions.	css.types.color.oklab css.types.color.oklab.mixed_type_parameters css.types.color.oklch css.types.color.oklch.mixed_type_parameters
online	Online status	The navigator.onLine property returns a Boolean for whether the browser is connected to some network (though not necessarily the internet). The online and offline events fire when the connection state changes.	api.Navigator.onLine api.Window.offline_event api.Window.online_event api.WorkerGlobalScope.offline_event api.WorkerGlobalScope.online_event api.WorkerNavigator.onLine
opacity	opacity	The opacity CSS property sets the transparency of an element.	css.properties.opacity css.properties.opacity.percentages css.types.number css.types.number.scientific_notation svg.global_attributes.opacity
opacity-svg	Opacity (SVG)	The fill-opacity, and stroke-opacity SVG attributes and CSS properties control the transparency of a stroke or fill of an SVG element.	css.properties.fill-opacity css.properties.stroke-opacity svg.global_attributes.fill-opacity svg.global_attributes.stroke-opacity
open-closed	Open and closed selectors	The :open and :closed CSS pseudo-classes match elements that have open and closed states, like <details, <dialog>, or <select>, based on their state.	css.selectors.closed css.selectors.open
optional-catch-binding	Optional catch binding	Omit the the binding parameter of a catch clause when you don't need information about the exception in a try ... catch statement.	javascript.statements.try_catch.optional_catch_binding
orientation-sensor	Orientation Sensor	The AbsoluteOrientationSensor and RelativeOrientationSensor APIs describe the physical orientation of a device in three-dimensional space, either in relation to the Earth's coordinate system or in relation to the device's own orientation, respectively.	api.AbsoluteOrientationSensor api.AbsoluteOrientationSensor.AbsoluteOrientationSensor api.OrientationSensor api.OrientationSensor.populateMatrix api.OrientationSensor.quaternion api.RelativeOrientationSensor api.RelativeOrientationSensor.RelativeOrientationSensor api.Sensor api.Sensor.activate_event api.Sensor.activated api.Sensor.error_event api.Sensor.hasReading api.Sensor.reading_event api.Sensor.start api.Sensor.stop api.Sensor.timestamp api.SensorErrorEvent api.SensorErrorEvent.SensorErrorEvent api.SensorErrorEvent.error
origin-private-file-system	Origin private file system	The navigator.storage.getDirectory() method returns a FileSystemDirectoryHandle that is restricted to a specific origin and invisible to the user's actual file system for faster file-based applications, such as SQLite databases.	api.FileSystemDirectoryHandle api.FileSystemDirectoryHandle.entries api.FileSystemDirectoryHandle.getDirectoryHandle api.FileSystemDirectoryHandle.getFileHandle api.FileSystemDirectoryHandle.keys api.FileSystemDirectoryHandle.removeEntry api.FileSystemDirectoryHandle.resolve api.FileSystemDirectoryHandle.values api.FileSystemFileHandle api.FileSystemFileHandle.createSyncAccessHandle api.FileSystemFileHandle.getFile api.FileSystemHandle api.FileSystemHandle.isSameEntry api.FileSystemHandle.kind api.FileSystemHandle.name api.FileSystemSyncAccessHandle api.FileSystemSyncAccessHandle.close api.FileSystemSyncAccessHandle.close.sync_version api.FileSystemSyncAccessHandle.flush api.FileSystemSyncAccessHandle.flush.sync_version api.FileSystemSyncAccessHandle.getSize api.FileSystemSyncAccessHandle.getSize.sync_version api.FileSystemSyncAccessHandle.read api.FileSystemSyncAccessHandle.truncate api.FileSystemSyncAccessHandle.truncate.sync_version api.FileSystemSyncAccessHandle.write api.StorageManager.getDirectory
outline	outline	The outline CSS shorthand sets the color, style, and width of a line around an element, outside of the border.	css.properties.outline
outlines	Outlines	The outline-color, outline-style, and outline-width and outline-offset CSS properties style a line around an element, outside of the border.	css.properties.outline-color css.properties.outline-offset css.properties.outline-style css.properties.outline-style.auto css.properties.outline-style.dashed css.properties.outline-style.dotted css.properties.outline-style.double css.properties.outline-style.groove css.properties.outline-style.inset css.properties.outline-style.none css.properties.outline-style.outset css.properties.outline-style.ridge css.properties.outline-style.solid css.properties.outline-width
output	<output>	The <output> element represents the result of a calculation, user action, or form entry.	api.HTMLOutputElement api.HTMLOutputElement.HTMLOutputElement api.HTMLOutputElement.defaultValue api.HTMLOutputElement.form api.HTMLOutputElement.htmlFor api.HTMLOutputElement.labels api.HTMLOutputElement.name api.HTMLOutputElement.type api.HTMLOutputElement.value html.elements.output html.elements.output.for html.elements.output.form html.elements.output.name
overflow	Overflow media queries	The overflow-block and overflow-inline CSS media queries set styles based on the way a device displays content that's larger than the viewport or page area. For example, a laptop lets users scroll to reveal content, while a printer displays overflowing content on additional pages.	css.at-rules.media.overflow-block css.at-rules.media.overflow-inline
overflow-anchor	overflow-anchor	The overflow-anchor CSS property sets an element as a possible scroll anchor, reducing unintended scrolling when document changes occur above the current scrollport. This is enabled by default where supported.	css.properties.overflow-anchor css.properties.overflow-anchor.auto css.properties.overflow-anchor.none
overflow-clip-margin	overflow-clip-margin	The overflow-clip-margin CSS property sets how far overflow content may appear outside the bounds of an element before it's clipped by effects such as overflow: clip.	css.properties.overflow-clip-margin css.properties.overflow-clip-margin.border-box css.properties.overflow-clip-margin.content-box css.properties.overflow-clip-margin.padding-box
overflow-overlay	`overflow: overlay`	The overflow: overlay CSS declaration is an alias to overflow: auto. Historically, it caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space.	css.types.overflow.overlay
overflow-shorthand	overflow	The overflow CSS property sets the behavior for when content doesn't fit in an element.	css.properties.overflow css.properties.overflow-x css.properties.overflow-x.auto css.properties.overflow-x.clip css.properties.overflow-x.hidden css.properties.overflow-x.scroll css.properties.overflow-x.visible css.properties.overflow-y css.properties.overflow-y.auto css.properties.overflow-y.clip css.properties.overflow-y.hidden css.properties.overflow-y.scroll css.properties.overflow-y.visible css.properties.overflow.auto css.properties.overflow.clip css.properties.overflow.hidden css.properties.overflow.multiple_keywords css.properties.overflow.scroll css.properties.overflow.visible css.types.overflow css.types.overflow.clip
overflow-wrap	overflow-wrap	The overflow-wrap CSS property breaks a line of text onto multiple lines inside the targeted element in an otherwise unbreakable place to prevent overflow. The legacy property is word-wrap.	css.properties.overflow-wrap css.properties.overflow-wrap.anywhere css.properties.overflow-wrap.break-word css.properties.overflow-wrap.normal
overlay	overlay	The overlay CSS property, used as an allow-discrete CSS transition, prevents a top layer element, such as a popover or a <dialog>, from being removed from the top layer before it has finished animating. You can't set the value of the overlay property; only use it as transition property.	css.properties.overlay css.properties.overlay.auto css.properties.overlay.none
overscroll-behavior	overscroll-behavior	The overscroll-behavior CSS property disables default scrolling behaviors when the edges of a scrolling area are reached.	css.properties.overscroll-behavior css.properties.overscroll-behavior-block css.properties.overscroll-behavior-block.auto css.properties.overscroll-behavior-block.contain css.properties.overscroll-behavior-block.none css.properties.overscroll-behavior-inline css.properties.overscroll-behavior-inline.auto css.properties.overscroll-behavior-inline.contain css.properties.overscroll-behavior-inline.none css.properties.overscroll-behavior-x css.properties.overscroll-behavior-x.auto css.properties.overscroll-behavior-x.contain css.properties.overscroll-behavior-x.none css.properties.overscroll-behavior-y css.properties.overscroll-behavior-y.auto css.properties.overscroll-behavior-y.contain css.properties.overscroll-behavior-y.none css.properties.overscroll-behavior.auto css.properties.overscroll-behavior.contain css.properties.overscroll-behavior.none
ovr-multiview2	OVR_multiview2 WebGL extension	The OVR_multiview2 extension for WebGL 2.0 contexts renders into multiple views simultaneously. This especially useful for virtual reality (VR) and WebXR.	api.OVR_multiview2 api.OVR_multiview2.framebufferTextureMultiviewOVR
p	<p>	The <p> element represents a paragraph of text.	api.HTMLParagraphElement html.elements.p
padding	padding	The padding CSS property sets space between an element's edge and its contents. It is a shorthand for padding-top, padding-right, padding-bottom, and padding-left.	css.properties.padding css.properties.padding-bottom css.properties.padding-left css.properties.padding-right css.properties.padding-top
page-breaks	Page breaks	The break-after, break-before, break-inside CSS properties (along with page-break- aliases) control where printed pages start and end. Also known as pagination or page breaking.	css.properties.break-after css.properties.break-after.always css.properties.break-after.auto css.properties.break-after.avoid css.properties.break-after.avoid-page css.properties.break-after.left css.properties.break-after.page css.properties.break-after.paged_context css.properties.break-after.paged_context.avoid-page css.properties.break-after.paged_context.page css.properties.break-after.paged_context.recto css.properties.break-after.recto css.properties.break-after.right css.properties.break-after.verso css.properties.break-before css.properties.break-before.always css.properties.break-before.auto css.properties.break-before.avoid css.properties.break-before.avoid-page css.properties.break-before.left css.properties.break-before.page css.properties.break-before.paged_context css.properties.break-before.paged_context.page css.properties.break-before.paged_context.recto css.properties.break-before.recto css.properties.break-before.right css.properties.break-before.verso css.properties.break-inside css.properties.break-inside.auto css.properties.break-inside.avoid css.properties.break-inside.avoid-page css.properties.break-inside.paged_context css.properties.break-inside.paged_context.avoid-page css.properties.page-break-after css.properties.page-break-after.always css.properties.page-break-after.auto css.properties.page-break-after.avoid css.properties.page-break-after.left css.properties.page-break-after.right css.properties.page-break-before css.properties.page-break-before.always css.properties.page-break-before.auto css.properties.page-break-before.avoid css.properties.page-break-before.left css.properties.page-break-before.right css.properties.page-break-inside css.properties.page-break-inside.auto css.properties.page-break-inside.avoid
page-lifecycle	Page lifecycle	The page lifecycle API helps you safely handle page suspensions or discards from memory. The freeze and resume events fire when the browser suspends or resumes a page from memory while the document.wasDiscarded property reports whether the page was reloaded after being dropped.	api.Document.freeze_event api.Document.resume_event api.Document.wasDiscarded
page-orientation	page-orientation	The page-orientation CSS property sets the rotation of a page after pagination. This allows pages with the same size declaration to display with different orientations.	css.at-rules.page.page-orientation
page-selectors	Page selectors	The :first, :left, and :right pseudo-classes select pages based on their position in sequence after pagination. They're often used with the page CSS property, to choose a print layout defined by the @page rule.	css.properties.page css.selectors.first css.selectors.left css.selectors.right
page-setup	Page setup	The @page CSS at-rule sets the page-specific dimensions and margins for content such as printed documents, ebooks, or slides.	css.at-rules.page css.at-rules.page.bottom-center css.at-rules.page.bottom-left css.at-rules.page.bottom-left-corner css.at-rules.page.bottom-right css.at-rules.page.bottom-right-corner css.at-rules.page.left-bottom css.at-rules.page.left-middle css.at-rules.page.left-top css.at-rules.page.right-bottom css.at-rules.page.right-middle css.at-rules.page.right-top css.at-rules.page.size css.at-rules.page.size.jis-b4 css.at-rules.page.size.jis-b5 css.at-rules.page.top-center css.at-rules.page.top-left css.at-rules.page.top-left-corner css.at-rules.page.top-right css.at-rules.page.top-right-corner
page-transition-events	Page transition events	The pageshow and pagehide transition events fire when a document loads or unloads due to a navigation, such as clicking on a link on a page or the back button in a browser.	api.PageTransitionEvent api.PageTransitionEvent.PageTransitionEvent api.PageTransitionEvent.persisted api.Window.pagehide_event api.Window.pageshow_event
page-visibility	Page visibility	The document.visibilityState and document.hidden properties tell you whether the page is visible to the user (for example, it's not minimized or in a background tab).	api.Document.hidden api.Document.visibilityState api.Document.visibilitychange_event
page-visibility-state	Page visibility state	The visibility-state performance entry and the VisibilityStateEntry API measure the timing of page visibility state changes, such as when a tab is no longer visible or the user has switched to another app.	api.VisibilityStateEntry api.VisibilityStateEntry.duration api.VisibilityStateEntry.entryType api.VisibilityStateEntry.name api.VisibilityStateEntry.startTime
paint	paint()	The paint() CSS function creates a custom image, drawn using a paint worklet, for an element's background or border.	api.CSS.paintWorklet_static api.PaintRenderingContext2D api.PaintRenderingContext2D.beginPath api.PaintRenderingContext2D.clearRect api.PaintRenderingContext2D.clip api.PaintRenderingContext2D.createLinearGradient api.PaintRenderingContext2D.createPattern api.PaintRenderingContext2D.createRadialGradient api.PaintRenderingContext2D.drawImage api.PaintRenderingContext2D.fill api.PaintRenderingContext2D.fillRect api.PaintRenderingContext2D.fillStyle api.PaintRenderingContext2D.filter api.PaintRenderingContext2D.getLineDash api.PaintRenderingContext2D.getTransform api.PaintRenderingContext2D.globalAlpha api.PaintRenderingContext2D.globalCompositeOperation api.PaintRenderingContext2D.imageSmoothingEnabled api.PaintRenderingContext2D.imageSmoothingQuality api.PaintRenderingContext2D.isPointInPath api.PaintRenderingContext2D.isPointInStroke api.PaintRenderingContext2D.lineCap api.PaintRenderingContext2D.lineDashOffset api.PaintRenderingContext2D.lineJoin api.PaintRenderingContext2D.lineWidth api.PaintRenderingContext2D.miterLimit api.PaintRenderingContext2D.resetTransform api.PaintRenderingContext2D.restore api.PaintRenderingContext2D.rotate api.PaintRenderingContext2D.save api.PaintRenderingContext2D.scale api.PaintRenderingContext2D.setLineDash api.PaintRenderingContext2D.setTransform api.PaintRenderingContext2D.shadowBlur api.PaintRenderingContext2D.shadowColor api.PaintRenderingContext2D.shadowOffsetX api.PaintRenderingContext2D.shadowOffsetY api.PaintRenderingContext2D.stroke api.PaintRenderingContext2D.strokeRect api.PaintRenderingContext2D.strokeStyle api.PaintRenderingContext2D.transform api.PaintRenderingContext2D.translate api.PaintSize api.PaintSize.height api.PaintSize.width api.PaintWorkletGlobalScope api.PaintWorkletGlobalScope.devicePixelRatio api.PaintWorkletGlobalScope.registerPaint css.types.image.paint css.types.image.paint.additional_parameters
paint-order	paint-order	The paint-order CSS property sets the z-order of strokes, fills, and (in SVG content) markers. For example, paint-order: markers stroke fill; draws the markers, then stroke on top of markers, then fill on top of both markers and stroke.	css.properties.paint-order svg.global_attributes.paint-order
paint-timing	Paint timing	The paint performance entry and the PerformancePaintTiming API measures the duration of "paint" (also called "render") operations as a page loads. The API measures the time to First Paint (FP) and First Contentful Paint (FCP), common metrics for perceived loading times.	api.PerformancePaintTiming api.PerformancePaintTiming.first-contentful-paint api.PerformancePaintTiming.first-paint
parse-html-unsafe	Unsanitized HTML parsing methods	The Document.parseHTMLUnsafe() static method parses HTML into a DOM tree, while the setHTMLUnsafe() method of Element and ShadowRoot parses and inserts HTML into an existing tree. No sanitization applies to these methods, so never call them with user-provided HTML strings.	api.Document.parseHTMLUnsafe_static api.Element.setHTMLUnsafe api.ShadowRoot.setHTMLUnsafe
partitioned-cookies	Partitioned cookies	Partitioned cookies allow you to opt a cookie into partitioned storage, with a separate cookie jar per top-level site. Also known as Cookies Having Independent Partitioned State or CHIPS.	api.CookieChangeEvent.changed.partitioned_property api.CookieChangeEvent.deleted.partitioned_property api.CookieStore.delete.partitioned_option api.CookieStore.get.partitioned_return_property api.CookieStore.getAll.partitioned_return_property api.CookieStore.set.partitioned_option api.ExtendableCookieChangeEvent.changed.partitioned_property api.ExtendableCookieChangeEvent.deleted.partitioned_property http.headers.Set-Cookie.Partitioned
password-credentials	Password credentials	The PasswordCredential API represents a username and password.	api.PasswordCredential api.PasswordCredential.PasswordCredential api.PasswordCredential.iconURL api.PasswordCredential.name api.PasswordCredential.password
path-shape	path()	The path() CSS shape function creates a shape for clip-path, shape-outside, and the SVG attribute d.	css.types.basic-shape.path css.types.basic-shape.path.clip-path css.types.basic-shape.path.d css.types.basic-shape.path.offset-path css.types.basic-shape.path.shape-outside
payment-handler	Payment handler	The payment handler API registers a web application as a payment handler and responds to payment requests in the browser's user interface, rather than redirecting users to a separate site to complete a payment.	api.CanMakePaymentEvent api.CanMakePaymentEvent.CanMakePaymentEvent api.CanMakePaymentEvent.respondWith api.PaymentManager api.PaymentManager.enableDelegations api.PaymentManager.secure_context_required api.PaymentManager.userHint api.PaymentRequestEvent api.PaymentRequestEvent.PaymentRequestEvent api.PaymentRequestEvent.changePaymentMethod api.PaymentRequestEvent.changeShippingAddress api.PaymentRequestEvent.changeShippingOption api.PaymentRequestEvent.methodData api.PaymentRequestEvent.modifiers api.PaymentRequestEvent.openWindow api.PaymentRequestEvent.paymentOptions api.PaymentRequestEvent.paymentRequestId api.PaymentRequestEvent.paymentRequestOrigin api.PaymentRequestEvent.respondWith api.PaymentRequestEvent.shippingOptions api.PaymentRequestEvent.topOrigin api.PaymentRequestEvent.total api.Permissions.permission_payment-handler api.ServiceWorkerGlobalScope.canmakepayment_event api.ServiceWorkerGlobalScope.paymentrequest_event api.ServiceWorkerRegistration.paymentManager
payment-request	Payment request	The PaymentRequest API prompts the user to make a payment through the browser's user interface.	api.PaymentMethodChangeEvent api.PaymentMethodChangeEvent.PaymentMethodChangeEvent api.PaymentMethodChangeEvent.methodDetails api.PaymentMethodChangeEvent.methodName api.PaymentRequest api.PaymentRequest.PaymentRequest api.PaymentRequest.PaymentRequest.secure_payment_confirmation_method api.PaymentRequest.abort api.PaymentRequest.canMakePayment api.PaymentRequest.id api.PaymentRequest.paymentmethodchange_event api.PaymentRequest.show api.PaymentRequestUpdateEvent api.PaymentRequestUpdateEvent.PaymentRequestUpdateEvent api.PaymentRequestUpdateEvent.secure_context_required api.PaymentRequestUpdateEvent.updateWith api.PaymentResponse api.PaymentResponse.complete api.PaymentResponse.details api.PaymentResponse.methodName api.PaymentResponse.payerEmail api.PaymentResponse.payerName api.PaymentResponse.payerPhone api.PaymentResponse.payerdetailchange_event api.PaymentResponse.requestId api.PaymentResponse.retry api.PaymentResponse.shippingAddress api.PaymentResponse.shippingOption api.PaymentResponse.toJSON html.elements.iframe.allow.payment http.headers.Permissions-Policy.payment
pdf-viewer	pdfViewerEnabled	The navigator.pdfViewerEnabled read-only property returns a Boolean for whether the browser navigates to and shows a PDF in the browser window or downloads the PDF.	api.Navigator.pdfViewerEnabled
performance	Performance	The performance global object and the Performance API provide access to performance-related information for the current execution context.	api.Performance api.Performance.clearMarks api.Performance.clearMeasures api.Performance.clearResourceTimings api.Performance.getEntries api.Performance.getEntriesByName api.Performance.getEntriesByType api.Performance.mark api.Performance.mark.markOptions_parameter api.Performance.mark.returns_performancemark api.Performance.measure api.Performance.measure.measureOptions_parameter api.Performance.measure.returns_performancemeasure api.Performance.now api.Performance.resourcetimingbufferfull_event api.Performance.setResourceTimingBufferSize api.Performance.timeOrigin api.Performance.toJSON api.PerformanceEntry api.PerformanceEntry.duration api.PerformanceEntry.entryType api.PerformanceEntry.name api.PerformanceEntry.startTime api.PerformanceEntry.toJSON api.PerformanceEntry.worker_support api.PerformanceMark api.PerformanceMark.PerformanceMark api.PerformanceMark.detail api.PerformanceMeasure api.PerformanceMeasure.detail api.PerformanceObserver api.PerformanceObserver.PerformanceObserver api.PerformanceObserver.PerformanceObserver.droppedEntriesCount api.PerformanceObserver.disconnect api.PerformanceObserver.observe api.PerformanceObserver.supportedEntryTypes_static api.PerformanceObserver.takeRecords api.PerformanceObserver.worker_support api.PerformanceObserverEntryList api.PerformanceObserverEntryList.getEntries api.PerformanceObserverEntryList.getEntriesByName api.PerformanceObserverEntryList.getEntriesByType api.performance api.performance.worker_support http.headers.Timing-Allow-Origin
performancetiming	PerformanceTiming and PerformanceNavigation	The window.performance.timing and window.performance.navigation APIs report performance timing information for events that occur during the loading and use of the current page.	api.Performance.navigation api.Performance.timing api.PerformanceNavigation api.PerformanceNavigation.redirectCount api.PerformanceNavigation.toJSON api.PerformanceNavigation.type api.PerformanceTiming api.PerformanceTiming.connectEnd api.PerformanceTiming.connectStart api.PerformanceTiming.domComplete api.PerformanceTiming.domContentLoadedEventEnd api.PerformanceTiming.domContentLoadedEventStart api.PerformanceTiming.domInteractive api.PerformanceTiming.domLoading api.PerformanceTiming.domainLookupEnd api.PerformanceTiming.domainLookupStart api.PerformanceTiming.fetchStart api.PerformanceTiming.loadEventEnd api.PerformanceTiming.loadEventStart api.PerformanceTiming.navigationStart api.PerformanceTiming.redirectEnd api.PerformanceTiming.redirectStart api.PerformanceTiming.requestStart api.PerformanceTiming.responseEnd api.PerformanceTiming.responseStart api.PerformanceTiming.secureConnectionStart api.PerformanceTiming.toJSON api.PerformanceTiming.unloadEventEnd api.PerformanceTiming.unloadEventStart
permissions	Permissions	The navigator.permissions API checks whether a permission, such as access to geolocation data, has been granted.	api.Navigator.permissions api.PermissionStatus api.PermissionStatus.state api.Permissions api.Permissions.query api.Permissions.request
physical-properties	Physical properties	The physical CSS properties, top, right, bottom, and left, set the inset position of an element relative to the corresponding side of a container determined by the element's position property.	css.properties.bottom css.properties.bottom.auto css.properties.left css.properties.left.auto css.properties.right css.properties.right.auto css.properties.top css.properties.top.auto
picture	<picture>	The <picture> element is used for art direction in responsive images, where a different image is displayed based on the <source> element.	api.HTMLPictureElement html.elements.picture
picture-in-picture	Picture-in-picture (video)	The picture-in-picture API allow websites to create a floating, always-on-top video window. Also known as PiP or pop-out video.	api.Document.exitPictureInPicture api.Document.pictureInPictureElement api.Document.pictureInPictureEnabled api.HTMLVideoElement.disablePictureInPicture api.HTMLVideoElement.enterpictureinpicture_event api.HTMLVideoElement.leavepictureinpicture_event api.HTMLVideoElement.requestPictureInPicture api.PictureInPictureEvent api.PictureInPictureEvent.PictureInPictureEvent api.PictureInPictureEvent.pictureInPictureWindow api.PictureInPictureWindow api.PictureInPictureWindow.height api.PictureInPictureWindow.resize_event api.PictureInPictureWindow.width api.ShadowRoot.pictureInPictureElement css.selectors.picture-in-picture html.elements.iframe.allow.picture-in-picture html.elements.video.disablepictureinpicture http.headers.Permissions-Policy.picture-in-picture
ping	ping	The ping attribute for <a> elements sets a URL to send a POST request to when the <a> is clicked. This is typically used for outbound link reporting.	api.HTMLAnchorElement.ping api.HTMLAreaElement.ping api.SVGAElement.ping html.elements.a.ping html.elements.area.ping svg.elements.a.ping
placeholder	::placeholder	The ::placeholder CSS pseudo-element selects help text in <input> and <textarea> elements when no value is set.	css.selectors.placeholder
placeholder-shown	:placeholder-shown	The :placeholder-shown CSS pseudo-element selects <input> and <textarea> elements when no value is set and the element's placeholder attribute is not empty. Not to be confused with ::placeholder, which selects the placeholder text itself.	css.selectors.placeholder-shown css.selectors.placeholder-shown.non_text_types
pointer-events	pointer-events	The pointer-events CSS property sets whether a user can interact with an element using a mouse, touch, or other pointing input device.	css.properties.pointer-events css.properties.pointer-events.html_elements
pointer-events-api	Pointer Events	Pointer events, such as pointerdown, and the PointerEvent API, represent general pointing inputs, from a wide range of devices, such as a mouse, pen or stylus, or touch with one or more fingers. Not to be confused with the pointer-events CSS property.	api.Element.auxclick_event.type_pointerevent api.Element.click_event.type_pointerevent api.Element.contextmenu_event.type_pointerevent api.Element.gotpointercapture_event api.Element.hasPointerCapture api.Element.lostpointercapture_event api.Element.pointercancel_event api.Element.pointerdown_event api.Element.pointerenter_event api.Element.pointerleave_event api.Element.pointermove_event api.Element.pointerout_event api.Element.pointerover_event api.Element.pointerrawupdate_event api.Element.pointerup_event api.Element.releasePointerCapture api.Element.setPointerCapture api.Navigator.maxTouchPoints api.PointerEvent api.PointerEvent.PointerEvent api.PointerEvent.PointerEvent.options_altitudeAngle_parameter api.PointerEvent.PointerEvent.options_azimuthAngle_parameter api.PointerEvent.altitudeAngle api.PointerEvent.azimuthAngle api.PointerEvent.getCoalescedEvents api.PointerEvent.getPredictedEvents api.PointerEvent.height api.PointerEvent.isPrimary api.PointerEvent.persistentDeviceId api.PointerEvent.pointerId api.PointerEvent.pointerType api.PointerEvent.pointerType.fractional_coordinates api.PointerEvent.pressure api.PointerEvent.tangentialPressure api.PointerEvent.tiltX api.PointerEvent.tiltY api.PointerEvent.twist api.PointerEvent.width
pointer-lock	Pointer lock	Provides access to raw mouse movement by locking the target of mouse events to a single element and hiding the mouse cursor.	api.Document.exitPointerLock api.Document.pointerLockElement api.Document.pointerlockchange_event api.Document.pointerlockerror_event api.Element.requestPointerLock
popover	Popover	The popover HTML attribute creates an overlay to display content on top of other page content. Popovers can be shown declaratively using HTML, or using the showPopover() method.	api.HTMLButtonElement.popoverTargetAction api.HTMLButtonElement.popoverTargetElement api.HTMLElement.beforetoggle_event api.HTMLElement.beforetoggle_event.popover_elements api.HTMLElement.hidePopover api.HTMLElement.popover api.HTMLElement.showPopover api.HTMLElement.togglePopover api.HTMLElement.togglePopover.returns_boolean api.HTMLElement.toggle_event.popover_elements api.HTMLInputElement.popoverTargetAction api.HTMLInputElement.popoverTargetElement api.ToggleEvent api.ToggleEvent.ToggleEvent api.ToggleEvent.newState api.ToggleEvent.oldState css.selectors.backdrop.popover css.selectors.popover-open html.elements.button.popovertarget html.elements.button.popovertargetaction html.elements.input.popovertarget html.elements.input.popovertargetaction html.global_attributes.popover
position	Position	The position CSS property sets the origin position of an element to an element, the element's scrollport, or the viewport.	css.properties.position
postmessage	postMessage	The postMessage() global method sends cross-origin messages to windows and workers, including popups and iframes. Also known as cross-document messaging.	api.DedicatedWorkerGlobalScope.message_event api.DedicatedWorkerGlobalScope.postMessage api.MessageEvent api.MessageEvent.MessageEvent api.MessageEvent.data api.MessageEvent.lastEventId api.MessageEvent.origin api.MessageEvent.source api.Window.message_event api.Window.postMessage api.Worker.message_event api.Worker.postMessage
pre	<pre>	The <pre> element represents a block element of preformatted text that is presented exactly as written, including all white space.	api.HTMLPreElement html.elements.pre
prefers-color-scheme	prefers-color-scheme media query	The prefers-color-scheme CSS media query sets styles based on the requested color scheme, light or dark.	css.at-rules.media.prefers-color-scheme css.at-rules.media.prefers-color-scheme.respects-inherited-scheme http.headers.Sec-CH-Prefers-Color-Scheme
prefers-contrast	prefers-contrast media query	The prefers-contrast CSS media query sets styles based on whether the user prefers more or less contrast, the difference between foreground and background colors.	css.at-rules.media.prefers-contrast
prefers-reduced-data	prefers-reduced-data media query	The prefers-reduced-data CSS media query detects whether the user has a preference for using less network traffic. For example, you can use this media query to avoid loading large font files and use a system font instead.	css.at-rules.media.prefers-reduced-data
prefers-reduced-motion	prefers-reduced-motion media query	The prefers-reduced-motion CSS media query sets styles based on whether the user prefers to minimize the amount of non-essential animations on the device, such as scrolling, panning, zooming, and strobing.	css.at-rules.media.prefers-reduced-motion http.headers.Sec-CH-Prefers-Reduced-Motion
prefers-reduced-transparency	prefers-reduced-transparency media query	The prefers-reduced-transparency CSS media query sets styles based on whether the user prefers to reduce the amount of transparent effects on their device, for example to improve contrast and legibility.	css.at-rules.media.prefers-reduced-transparency http.headers.Sec-CH-Prefers-Reduced-Transparency
preloading-responsive-images	Preloading responsive images	The imagesrcset and imagesizes attributes with the rel="preload" attribute for the <link> HTML element starts fetching responsive images before they're found in the body of the document.	api.HTMLLinkElement.imageSizes api.HTMLLinkElement.imageSrcset html.elements.link.imagesizes html.elements.link.imagesrcset
presentation-api	Presentation API	The Presentation API shows or controls content on another display, such as a network-connected TV or projector.	api.Navigator.presentation api.Presentation api.Presentation.defaultRequest api.Presentation.receiver api.PresentationAvailability api.PresentationAvailability.change_event api.PresentationAvailability.value api.PresentationConnection api.PresentationConnection.binaryType api.PresentationConnection.close api.PresentationConnection.close_event api.PresentationConnection.connect_event api.PresentationConnection.id api.PresentationConnection.message_event api.PresentationConnection.send api.PresentationConnection.state api.PresentationConnection.terminate api.PresentationConnection.terminate_event api.PresentationConnection.url api.PresentationConnectionAvailableEvent api.PresentationConnectionAvailableEvent.PresentationConnectionAvailableEvent api.PresentationConnectionAvailableEvent.connection api.PresentationConnectionCloseEvent api.PresentationConnectionCloseEvent.PresentationConnectionCloseEvent api.PresentationConnectionCloseEvent.message api.PresentationConnectionCloseEvent.reason api.PresentationConnectionList api.PresentationConnectionList.connectionavailable_event api.PresentationConnectionList.connections api.PresentationReceiver api.PresentationReceiver.connectionList api.PresentationRequest api.PresentationRequest.PresentationRequest api.PresentationRequest.connectionavailable_event api.PresentationRequest.getAvailability api.PresentationRequest.reconnect api.PresentationRequest.secure_context_required api.PresentationRequest.start html.elements.iframe.sandbox.allow-presentation
preserves-pitch	preservesPitch	The preservesPitch property for <audio> or <video> adjusts the pitch of audio to sound more natural when the playback rate is faster or slower than the default.	api.HTMLMediaElement.preservesPitch
print	window.print()	The window.print() method opens the browser's print dialog.	api.Window.print
print-color-adjust	Print color adjust	The print-color-adjust CSS property sets whether styles of printed pages should be adjusted to use less ink, in cases such as light text on a dark background.	css.properties.print-color-adjust css.properties.print-color-adjust.economy css.properties.print-color-adjust.exact
print-events	Print events	An alternative to @media print queries, the beforeprint and afterprint events allow you to change the page for printing and and restore the page after printing.	api.Window.afterprint_event api.Window.beforeprint_event
private-click-measurement	Private click measurement	The attributionsourceid and attributiondestination attributes for <a> elements measure clicks across websites without associating a click to a specific session. Not to be confused with attribution reporting. Also known as PCM.	api.HTMLAnchorElement.attributionSourceId html.elements.a.attributionsourceid
private-network-access	Private network access	The Access-Control-Request-Private-Network: true and Access-Control-Allow-Private-Network: true HTTP request and response headers establish permission for websites to make requests to internal networks, such as to routers.	api.Request.targetAddressSpace http.mixed-content.private_network_access
profiler	Profiler	The Profiler API records data about the execution of a page, which you can send to a server for later analysis. Also known as self-profiling.	api.Profiler api.Profiler.Profiler api.Profiler.sampleInterval api.Profiler.stop api.Profiler.stopped
progress	<progress>	The <progress> element displays an indicator showing the completion progress of a task, typically displayed as a progress bar.	api.HTMLProgressElement api.HTMLProgressElement.labels api.HTMLProgressElement.max api.HTMLProgressElement.position api.HTMLProgressElement.value html.elements.progress html.elements.progress.max html.elements.progress.value
promise	Promise (initial support)	A promise represents an asynchronous operation which eventually succeeds or fails.	javascript.builtins.Promise javascript.builtins.Promise.@@species javascript.builtins.Promise.Promise javascript.builtins.Promise.all javascript.builtins.Promise.catch javascript.builtins.Promise.incumbent_settings_object_tracking javascript.builtins.Promise.race javascript.builtins.Promise.reject javascript.builtins.Promise.resolve javascript.builtins.Promise.then
promise-allsettled	Promise.allSettled()	The Promise.allSettled() static method waits for an array of promises to settle (resolve or reject).	javascript.builtins.Promise.allSettled
promise-any	Promise.any()	The Promise.any() static method returns a promise that fulfills as soon as the first of an iterable of promises fulfills, with that promise's value. Otherwise, it rejects with an AggregateError when all of the promises have rejected.	javascript.builtins.AggregateError javascript.builtins.AggregateError.AggregateError javascript.builtins.AggregateError.errors javascript.builtins.Promise.any
promise-finally	Promise finally()	The promise finally() method executes a function when the promise settles (resolves or rejects).	javascript.builtins.Promise.finally
promise-try	Promise.try()	The Promise.try() static method returns a promise that takes a callback of any kind (returns or throws, synchronously or asynchronously) and wraps its result in a Promise.	javascript.builtins.Promise.try
promise-withresolvers	Promise.withResolvers()	The Promise.withResolvers() static method is an alternative to the Promise() constructor that returns both the promise and resolution functions. You can use this to access resolve and reject outside the scope of the executor function.	javascript.builtins.Promise.withResolvers
proxy-reflect	Proxy and Reflect	The Proxy and Reflect JavaScript built-ins intercept and define custom behavior for fundamental language operations (such as property lookup, assignment, enumeration, or function invocation).	javascript.builtins.Proxy javascript.builtins.Proxy.Proxy javascript.builtins.Proxy.handler.apply javascript.builtins.Proxy.handler.construct javascript.builtins.Proxy.handler.defineProperty javascript.builtins.Proxy.handler.deleteProperty javascript.builtins.Proxy.handler.get javascript.builtins.Proxy.handler.getOwnPropertyDescriptor javascript.builtins.Proxy.handler.getPrototypeOf javascript.builtins.Proxy.handler.has javascript.builtins.Proxy.handler.isExtensible javascript.builtins.Proxy.handler.ownKeys javascript.builtins.Proxy.handler.preventExtensions javascript.builtins.Proxy.handler.set javascript.builtins.Proxy.handler.setPrototypeOf javascript.builtins.Proxy.revocable javascript.builtins.Reflect javascript.builtins.Reflect.apply javascript.builtins.Reflect.construct javascript.builtins.Reflect.defineProperty javascript.builtins.Reflect.deleteProperty javascript.builtins.Reflect.get javascript.builtins.Reflect.getOwnPropertyDescriptor javascript.builtins.Reflect.getPrototypeOf javascript.builtins.Reflect.has javascript.builtins.Reflect.isExtensible javascript.builtins.Reflect.ownKeys javascript.builtins.Reflect.preventExtensions javascript.builtins.Reflect.set javascript.builtins.Reflect.setPrototypeOf
push	Push messages	The Push API subscribes to and receives server-initiated messages. Subscribers receive pushed messages in the background, even after periods inactive or offline.	api.Permissions.permission_push api.PushEvent api.PushEvent.PushEvent api.PushEvent.data api.PushManager api.PushManager.getSubscription api.PushManager.permissionState api.PushManager.subscribe api.PushManager.supportedContentEncodings_static api.PushMessageData api.PushMessageData.arrayBuffer api.PushMessageData.blob api.PushMessageData.bytes api.PushMessageData.json api.PushMessageData.text api.PushSubscription api.PushSubscription.endpoint api.PushSubscription.expirationTime api.PushSubscription.getKey api.PushSubscription.options api.PushSubscription.toJSON api.PushSubscription.unsubscribe api.PushSubscriptionChangeEvent api.PushSubscriptionChangeEvent.PushSubscriptionChangeEvent api.PushSubscriptionChangeEvent.newSubscription api.PushSubscriptionChangeEvent.oldSubscription api.PushSubscriptionOptions api.PushSubscriptionOptions.applicationServerKey api.PushSubscriptionOptions.userVisibleOnly api.ServiceWorkerGlobalScope.push_event api.ServiceWorkerGlobalScope.pushsubscriptionchange_event api.ServiceWorkerRegistration api.ServiceWorkerRegistration.pushManager
q	<q>	The <q> element represents a short inline quotation.	api.HTMLQuoteElement api.HTMLQuoteElement.cite html.elements.q html.elements.q.cite
q-unit	Q unit	The Q CSS length unit is an absolute length anchored to the physical measurement of quarter-millimeters. 1Q is equivalent to 1/40 of 1 centimeter.	css.types.length.Q
quotes	Quotes	The quotes CSS property sets the quotation marks inserted via the content CSS property or <q> element.	css.properties.quotes css.properties.quotes.auto css.properties.quotes.none
rcap	rcap unit	The rcap CSS length unit is a font-relative length equal to the value of the cap unit on the root element. Cap-height is approximately equal to the height of a capital Latin letter.	css.types.length.rcap
rch	rch unit	The rch CSS length unit is a font-relative length equal to the value of the ch unit on the root element. ch length is based on the width of the zero (0) character.	css.types.length.rch
read-write-pseudos	:read-only and :read-write	The :read-only and :read-write CSS pseudo-classes match elements that are read-only or read-write, respectively. For example, :read-only matches <input> and <textarea> elements with the readonly attribute.	css.selectors.read-only css.selectors.read-write
reading-flow	reading-flow	The reading-flow CSS property sets the order in which flex or grid elements are rendered to speech or reached via focus navigation.	css.properties.reading-flow
referrer-policy	Referrer policy	The Referrer-Policy HTTP header and referrerpolicy HTML attributes control whether requests have the Referer header and what information the header contains.	api.HTMLAnchorElement.referrerPolicy api.HTMLAnchorElement.referrerPolicy.no-referrer-when-downgrade api.HTMLAnchorElement.referrerPolicy.origin-when-cross-origin api.HTMLAnchorElement.referrerPolicy.unsafe-url api.HTMLAreaElement.referrerPolicy api.HTMLAreaElement.referrerPolicy.no-referrer-when-downgrade api.HTMLAreaElement.referrerPolicy.origin-when-cross-origin api.HTMLAreaElement.referrerPolicy.unsafe-url api.HTMLIFrameElement.referrerPolicy api.HTMLIFrameElement.referrerPolicy.no-referrer-when-downgrade api.HTMLIFrameElement.referrerPolicy.origin-when-cross-origin api.HTMLIFrameElement.referrerPolicy.unsafe-url api.HTMLImageElement.referrerPolicy api.HTMLImageElement.referrerPolicy.no-referrer-when-downgrade api.HTMLImageElement.referrerPolicy.origin-when-cross-origin api.HTMLImageElement.referrerPolicy.unsafe-url api.HTMLLinkElement.referrerPolicy api.HTMLLinkElement.referrerPolicy.no-referrer-when-downgrade api.HTMLLinkElement.referrerPolicy.origin-when-cross-origin api.HTMLLinkElement.referrerPolicy.unsafe-url api.HTMLScriptElement.referrerPolicy api.HTMLScriptElement.referrerPolicy.no-referrer-when-downgrade api.HTMLScriptElement.referrerPolicy.origin-when-cross-origin api.HTMLScriptElement.referrerPolicy.unsafe-url html.elements.a.referrerpolicy html.elements.a.referrerpolicy.no-referrer-when-downgrade html.elements.a.referrerpolicy.origin-when-cross-origin html.elements.a.referrerpolicy.unsafe-url html.elements.area.referrerpolicy html.elements.area.referrerpolicy.no-referrer-when-downgrade html.elements.area.referrerpolicy.origin-when-cross-origin html.elements.area.referrerpolicy.unsafe-url html.elements.iframe.referrerpolicy html.elements.iframe.referrerpolicy.no-referrer-when-downgrade html.elements.iframe.referrerpolicy.origin-when-cross-origin html.elements.iframe.referrerpolicy.unsafe-url html.elements.img.referrerpolicy html.elements.img.referrerpolicy.no-referrer-when-downgrade html.elements.img.referrerpolicy.origin-when-cross-origin html.elements.img.referrerpolicy.unsafe-url html.elements.link.referrerpolicy html.elements.link.referrerpolicy.no-referrer-when-downgrade html.elements.link.referrerpolicy.origin-when-cross-origin html.elements.link.referrerpolicy.unsafe-url html.elements.script.referrerpolicy html.elements.script.referrerpolicy.no-referrer-when-downgrade html.elements.script.referrerpolicy.origin-when-cross-origin html.elements.script.referrerpolicy.unsafe-url http.headers.Referrer-Policy http.headers.Referrer-Policy.default_strict-origin-when-cross-origin http.headers.Referrer-Policy.no-referrer-when-downgrade http.headers.Referrer-Policy.origin-when-cross-origin http.headers.Referrer-Policy.same-origin http.headers.Referrer-Policy.strict-origin http.headers.Referrer-Policy.strict-origin-when-cross-origin http.headers.Referrer-Policy.unsafe-url
regexp	Regular expressions	The RegExp object represents a regular expression, a notation for matching text patterns.	javascript.builtins.RegExp javascript.builtins.RegExp.@@match javascript.builtins.RegExp.@@matchAll javascript.builtins.RegExp.@@replace javascript.builtins.RegExp.@@search javascript.builtins.RegExp.@@species javascript.builtins.RegExp.@@split javascript.builtins.RegExp.RegExp javascript.builtins.RegExp.dotAll javascript.builtins.RegExp.exec javascript.builtins.RegExp.flags javascript.builtins.RegExp.global javascript.builtins.RegExp.global.prototype_accessor javascript.builtins.RegExp.hasIndices javascript.builtins.RegExp.ignoreCase javascript.builtins.RegExp.ignoreCase.prototype_accessor javascript.builtins.RegExp.lastIndex javascript.builtins.RegExp.multiline javascript.builtins.RegExp.multiline.prototype_accessor javascript.builtins.RegExp.source javascript.builtins.RegExp.source.empty_regex_string javascript.builtins.RegExp.source.escaping javascript.builtins.RegExp.source.prototype_accessor javascript.builtins.RegExp.sticky javascript.builtins.RegExp.sticky.anchored_sticky_flag javascript.builtins.RegExp.sticky.prototype_accessor javascript.builtins.RegExp.test javascript.builtins.RegExp.toString javascript.builtins.RegExp.toString.escaping javascript.builtins.RegExp.unicode javascript.builtins.RegExp.unicodeSets javascript.grammar.regular_expression_literals javascript.regular_expressions.backreference javascript.regular_expressions.capturing_group javascript.regular_expressions.character_class javascript.regular_expressions.character_class_escape javascript.regular_expressions.character_escape javascript.regular_expressions.character_escape.unicode javascript.regular_expressions.disjunction javascript.regular_expressions.input_boundary_assertion javascript.regular_expressions.literal_character javascript.regular_expressions.lookahead_assertion javascript.regular_expressions.lookbehind_assertion javascript.regular_expressions.modifier javascript.regular_expressions.named_backreference javascript.regular_expressions.named_capturing_group javascript.regular_expressions.named_capturing_group.duplicate_named_capturing_groups javascript.regular_expressions.non_capturing_group javascript.regular_expressions.quantifier javascript.regular_expressions.unicode_character_class_escape javascript.regular_expressions.wildcard javascript.regular_expressions.word_boundary_assertion
regexp-escape	RegExp.escape()	The RegExp.escape() static method takes a string and replaces any characters that are potentially special characters of a regular expression with equivalent escape sequences. For example, RegExp.escape("[abc]") returns "\\[abc\\]".	javascript.builtins.RegExp.escape
region-capture	Region capture	The CropTarget API crops an element from a video track derived from display-capture of the active browser tab. For example, you can crop out video conferencing during screen sharing.	api.BrowserCaptureMediaStreamTrack api.BrowserCaptureMediaStreamTrack.clone api.BrowserCaptureMediaStreamTrack.cropTo api.CropTarget api.CropTarget.fromElement_static
registered-custom-properties	Registered custom properties	The CSS.registerProperty() static method and the @property CSS at-rule register custom properties for which types and behaviors can be defined.	api.CSS.registerProperty_static api.CSSPropertyRule api.CSSPropertyRule.inherits api.CSSPropertyRule.initialValue api.CSSPropertyRule.name api.CSSPropertyRule.syntax css.at-rules.property css.at-rules.property.inherits css.at-rules.property.initial-value css.at-rules.property.syntax
registerprotocolhandler	registerProtocolHandler	The navigator.registerProtocolHandler() method declares a site's ability to handle an address scheme (also known as a protocol). For example, an email site can register to open mailto: URLs or a VoIP site to open tel: URLs.	api.Navigator.registerProtocolHandler api.Navigator.registerProtocolHandler.scheme_parameter_bitcoin api.Navigator.registerProtocolHandler.scheme_parameter_ftp api.Navigator.registerProtocolHandler.scheme_parameter_ftps api.Navigator.registerProtocolHandler.scheme_parameter_geo api.Navigator.registerProtocolHandler.scheme_parameter_im api.Navigator.registerProtocolHandler.scheme_parameter_irc api.Navigator.registerProtocolHandler.scheme_parameter_ircs api.Navigator.registerProtocolHandler.scheme_parameter_magnet api.Navigator.registerProtocolHandler.scheme_parameter_mailto api.Navigator.registerProtocolHandler.scheme_parameter_matrix api.Navigator.registerProtocolHandler.scheme_parameter_mms api.Navigator.registerProtocolHandler.scheme_parameter_news api.Navigator.registerProtocolHandler.scheme_parameter_nntp api.Navigator.registerProtocolHandler.scheme_parameter_openpgp4fpr api.Navigator.registerProtocolHandler.scheme_parameter_sftp api.Navigator.registerProtocolHandler.scheme_parameter_sip api.Navigator.registerProtocolHandler.scheme_parameter_sms api.Navigator.registerProtocolHandler.scheme_parameter_smsto api.Navigator.registerProtocolHandler.scheme_parameter_ssh api.Navigator.registerProtocolHandler.scheme_parameter_tel api.Navigator.registerProtocolHandler.scheme_parameter_urn api.Navigator.registerProtocolHandler.scheme_parameter_webcal api.Navigator.registerProtocolHandler.scheme_parameter_wtai api.Navigator.registerProtocolHandler.scheme_parameter_xmpp api.Navigator.registerProtocolHandler.secure_context_required api.Navigator.unregisterProtocolHandler
relative-color	Relative colors	The from keyword for color functions (color(), hsl(), oklch(), etc.) creates a new color based on a given color by modifying the values of the input color. Also known as relative color syntax (RCS).	css.types.calc.color_component css.types.color.color.relative_syntax css.types.color.hsl.relative_syntax css.types.color.hwb.relative_syntax css.types.color.lab.relative_syntax css.types.color.lch.relative_syntax css.types.color.oklab.relative_syntax css.types.color.oklch.relative_syntax css.types.color.rgb.relative_syntax
relative-positioning	Relative positioning	The position: relative CSS declaration offsets the position of an element relative to its position in the normal flow.	css.properties.position.relative
rem	rem	The rem CSS length unit is a font-relative length that is equal to the font size of the root HTML element which for most browsers is 16px.	css.types.length.rem
remote-playback	Remote playback	The Remote Playback API initiates and controls playback of media on connected remote devices, such as smart TVs with AirPlay or Chromecast capabilities.	api.HTMLMediaElement.disableRemotePlayback api.HTMLMediaElement.remote api.RemotePlayback api.RemotePlayback.cancelWatchAvailability api.RemotePlayback.connect_event api.RemotePlayback.connecting_event api.RemotePlayback.disconnect_event api.RemotePlayback.prompt api.RemotePlayback.state api.RemotePlayback.watchAvailability html.elements.audio.disableremoteplayback html.elements.video.disableremoteplayback
reporting	Reporting API	The Reporting API makes consistent reports about Content Security Policy violations, Permissions-Policy violations, deprecated feature usage, crashes, and other web platform features available to your server endpoints.	api.Report api.Report.body api.Report.toJSON api.Report.type api.Report.url api.ReportBody api.ReportBody.toJSON api.ReportingObserver api.ReportingObserver.ReportingObserver api.ReportingObserver.disconnect api.ReportingObserver.observe api.ReportingObserver.takeRecords api.ReportingObserver.worker_support http.headers.Reporting-Endpoints
request-animation-frame	requestAnimationFrame()	The requestAnimationFrame() method schedules a function that runs before the next repaint. You can use it to animate content with JavaScript.	api.Window.cancelAnimationFrame api.Window.requestAnimationFrame
request-animation-frame-workers	requestAnimationFrame() in workers	The requestAnimationFrame() method in workers schedules a function that runs before the next repaint. Together with offscreen canvas, you can animate content from a worker.	api.DedicatedWorkerGlobalScope.cancelAnimationFrame api.DedicatedWorkerGlobalScope.requestAnimationFrame
request-video-frame-callback	requestVideoFrameCallback()	The requestVideoFrameCallback() method for <video> schedules a function that runs with the next video frame. It is similar to requestAnimationFrame(), but for video.	api.HTMLVideoElement.cancelVideoFrameCallback api.HTMLVideoElement.requestVideoFrameCallback
requestidlecallback	requestIdleCallback()	The requestIdleCallback() API queues a function that runs in idle browser time, either at the end of a frame or when the user is inactive. Also known as the background tasks API.	api.IdleDeadline api.IdleDeadline.didTimeout api.IdleDeadline.timeRemaining api.Window.cancelIdleCallback api.Window.requestIdleCallback
resizable-buffers	Resizable buffers	The resize() method of an ArrayBuffer and the grow() method of a SharedArrayBuffer, constructed with the maxByteLength option, changes the size of the buffer in place.	javascript.builtins.ArrayBuffer.ArrayBuffer.maxByteLength_option javascript.builtins.ArrayBuffer.maxByteLength javascript.builtins.ArrayBuffer.resizable javascript.builtins.ArrayBuffer.resize javascript.builtins.SharedArrayBuffer.SharedArrayBuffer.maxByteLength_option javascript.builtins.SharedArrayBuffer.grow javascript.builtins.SharedArrayBuffer.growable javascript.builtins.SharedArrayBuffer.maxByteLength
resize	resize (CSS property)	The resize CSS property sets whether an element can be resized by the user, and on which axes.	css.properties.resize css.properties.resize.block css.properties.resize.block_level_support css.properties.resize.inline
resize-observer	Resize observer	The ResizeObserver API observes and reacts to changes in the size of DOM elements.	api.ResizeObserver api.ResizeObserver.ResizeObserver api.ResizeObserver.disconnect api.ResizeObserver.observe api.ResizeObserver.observe.options_box_parameter api.ResizeObserver.unobserve api.ResizeObserverEntry api.ResizeObserverEntry.borderBoxSize api.ResizeObserverEntry.contentBoxSize api.ResizeObserverEntry.contentRect api.ResizeObserverEntry.devicePixelContentBoxSize api.ResizeObserverEntry.target api.ResizeObserverSize api.ResizeObserverSize.blockSize api.ResizeObserverSize.inlineSize
resolution	resolution media query	The resolution CSS media query sets styles based on the pixel density, or how many pixels a device uses to display a single CSS pixel.	css.at-rules.media.resolution css.types.resolution css.types.resolution.dpcm css.types.resolution.dpi css.types.resolution.dppx css.types.resolution.x
resolution-compat	resolution media query (compatibility prefixes)	The -webkit-device-pixel-ratio, -webkit-min-device-pixel-ratio, and -webkit-max-device-pixel-ratio CSS media queries are standardized compatibility alternatives to resolution media queries.	css.at-rules.media.-webkit-device-pixel-ratio css.at-rules.media.-webkit-max-device-pixel-ratio css.at-rules.media.-webkit-min-device-pixel-ratio
resource-size	Resource size	The decodedBodySize, encodedBodySize, and transferSize properties of the PerformanceResourceTiming API reports the size of resources loaded.	api.PerformanceResourceTiming.decodedBodySize api.PerformanceResourceTiming.encodedBodySize api.PerformanceResourceTiming.transferSize
resource-timing	Resource timing (initial support)	PerformanceResourceTiming entries report when network events happen while loading a resource, such as when connections start and end. You can use this information to measure loading times.	api.PerformanceResourceTiming api.PerformanceResourceTiming.connectEnd api.PerformanceResourceTiming.connectStart api.PerformanceResourceTiming.contentType api.PerformanceResourceTiming.deliveryType api.PerformanceResourceTiming.domainLookupEnd api.PerformanceResourceTiming.domainLookupStart api.PerformanceResourceTiming.fetchStart api.PerformanceResourceTiming.firstInterimResponseStart api.PerformanceResourceTiming.initiatorType api.PerformanceResourceTiming.nextHopProtocol api.PerformanceResourceTiming.redirectEnd api.PerformanceResourceTiming.redirectStart api.PerformanceResourceTiming.renderBlockingStatus api.PerformanceResourceTiming.requestStart api.PerformanceResourceTiming.responseEnd api.PerformanceResourceTiming.responseStart api.PerformanceResourceTiming.responseStatus api.PerformanceResourceTiming.secureConnectionStart api.PerformanceResourceTiming.toJSON api.PerformanceResourceTiming.workerStart api.PerformanceResourceTiming.worker_support
revert-value	revert	The revert CSS keyword resets any property to its previous default, provided by either the user or browser stylesheets. For example, setting display: revert on a <div> will likely result in display: block, the browser default style. This is often confused with initial.	css.types.global_keywords.revert
rex	rex unit	The rex CSS length unit is a font-relative length that is equal to the x-height of the root element.	css.types.length.rex
rgb	RGB	The rgb(), rgba(), and hexadecimal (as in #004488ff`) notations pick colors using red, green, blue, and alpha (transparency) channels.	css.types.color.rgb css.types.color.rgb.alpha_parameter css.types.color.rgb.float_values css.types.color.rgb.mixed_type_parameters css.types.color.rgb.space_separated_parameters css.types.color.rgb_hexadecimal_notation css.types.color.rgb_hexadecimal_notation.alpha_hexadecimal_notation
rhythmic-sizing	Rhythmic sizing	The line-height-step CSS property creates consistent vertical rhythm by setting the spacing between body text baselines. It rounds taller lines like headings up to the next multiple of the body text spacing.	css.properties.line-height-step
ric	ric unit	The ric CSS length unit, or root international character, is a font-relative length equal to the width of CJK character relative to the root element.	css.types.length.ric
rlh	rlh unit	The rlh CSS length unit is a font-relative length relative to the line height of root element.	css.types.length.rlh
root	:root	The :root pseudo-class matches the root element of the document, usually the <html> element.	css.selectors.root
round-mod-rem	round(), mod(), and rem()	The round(), mod(), and rem() CSS functions compute rounded values and the remainder after division.	css.types.mod css.types.rem css.types.round
ruby	<ruby>	The <ruby> element produces small annotations that are rendered with its base text.	html.elements.rp html.elements.rt html.elements.ruby
ruby-align	ruby-align	The ruby-align CSS property sets the spacing and alignment of ruby annotation text when it does not fill its available space.	css.properties.ruby-align css.properties.ruby-align.center css.properties.ruby-align.space-around css.properties.ruby-align.space-between css.properties.ruby-align.start
ruby-overhang	ruby-overhang	The ruby-overhang CSS property sets whether ruby annotations may overlap adjacent text.	css.properties.ruby-overhang css.properties.ruby-overhang.auto css.properties.ruby-overhang.none
ruby-position	ruby-position	The ruby-position CSS property sets the position of a ruby annotation in relation to its base text. Annotations can display over, under, or interleaved with the base text.	css.properties.ruby-position css.properties.ruby-position.alternate css.properties.ruby-position.inter-character css.properties.ruby-position.over css.properties.ruby-position.under
s	<s>	The <s> HTML element indicates text that is no longer relevant or accurate, styling text as strikethrough by default.	html.elements.s
safe-area-inset	Safe area inset environment variables	The safe-area-inset- CSS environment variables represent a rectangle that cannot cut off content within a non-rectangular screen. For example, top:\ env(safe-area-inset-top); positions the top of an element below the notch on an iPhone.	css.properties.custom-property.env css.properties.custom-property.env.safe-area-inset-bottom css.properties.custom-property.env.safe-area-inset-left css.properties.custom-property.env.safe-area-inset-right css.properties.custom-property.env.safe-area-inset-top
samp	<samp>	The <samp> element represents a sample or quoted output from a computer program. Styled in a monospace font by default.	html.elements.samp
savedata	Save-Data	Browsers send the Save-Data HTTP request header when the user turns on a data-saving mode. It is a hint to reduce data sent to the browser. Servers should respond with alternative content, such as smaller images and videos, or different markup and styling.	api.NetworkInformation.saveData http.headers.Save-Data
scheduler	Scheduler API	The scheduler API provides a way to prioritize all tasks belonging to an application.	api.Scheduler api.Scheduler.postTask api.Scheduler.yield api.TaskController api.TaskController.TaskController api.TaskController.setPriority api.TaskPriorityChangeEvent api.TaskPriorityChangeEvent.TaskPriorityChangeEvent api.TaskPriorityChangeEvent.previousPriority api.TaskSignal api.TaskSignal.any_static api.TaskSignal.priority api.TaskSignal.prioritychange_event api.scheduler
scope	@scope	The @scope CSS at-rule sets the scope for a group of rules.	api.CSSScopeRule api.CSSScopeRule.end api.CSSScopeRule.start css.at-rules.scope
scope-pseudo	:scope (pseudo-class)	The :scope CSS pseudo-class matches the scoping root, for instance the element that querySelector() is called on, or the root of a DOM subtree specified with @scope.	css.selectors.scope css.selectors.scope.dom_api
screen	Screen	The window.screen property contains information about the screen of the output device that the referenced window is being rendered on.	api.Screen api.Screen.availHeight api.Screen.availWidth api.Screen.colorDepth api.Screen.height api.Screen.pixelDepth api.Screen.width
screen-capture	Screen capture	The navigator.mediaDevices.getDisplayMedia() method asks the user to choose a screen or portion of a screen (such as a window) to capture as a media stream.	api.CaptureController api.CaptureController.CaptureController api.CaptureController.setFocusBehavior api.MediaDevices.getDisplayMedia api.MediaDevices.getDisplayMedia.audio_capture_support api.MediaDevices.getDisplayMedia.controller_option api.MediaDevices.getDisplayMedia.monitorTypeSurfaces_option api.MediaDevices.getDisplayMedia.selfBrowserSurface_option api.MediaDevices.getDisplayMedia.surfaceSwitching_option api.MediaDevices.getDisplayMedia.systemAudio_option api.MediaStreamTrack.applyConstraints.displaySurface_constraint api.MediaStreamTrack.applyConstraints.logicalSurface_constraint api.MediaStreamTrack.applyConstraints.suppressLocalAudioPlayback_constraint html.elements.iframe.allow.display-capture http.headers.Permissions-Policy.display-capture
screen-orientation	Screen orientation	The screen.orientation API gets information about the orientation of the viewport, such as landscape or portrait. With this API, you can adapt an application's layout or behavior in response to changes in orientation.	api.Screen.orientation api.ScreenOrientation api.ScreenOrientation.angle api.ScreenOrientation.change_event api.ScreenOrientation.type
screen-orientation-lock	Screen orientation lock	The screen.orientation.lock() method prevents changes to the screen orientation, typically in fullscreen applications such as games. For example, while locked, rotating a phone to the side won't change the screen orientation from landscape to portrait.	api.ScreenOrientation.lock api.ScreenOrientation.unlock
screen-wake-lock	Screen wake lock	The navigator.wakeLock.request("screen") API prevents the device's screen from dimming or being turned off.	api.Navigator.wakeLock api.Permissions.permission_screen-wake-lock api.WakeLock api.WakeLock.request api.WakeLockSentinel api.WakeLockSentinel.release api.WakeLockSentinel.release_event api.WakeLockSentinel.released api.WakeLockSentinel.type html.elements.iframe.allow.screen-wake-lock http.headers.Permissions-Policy.screen-wake-lock
script	<script> and <noscript>	The <script> element contains or loads data or executable code. This is typically used to load JavaScript code. The <noscript> element represents alternative content to show when scripting is not allowed.	api.HTMLScriptElement api.HTMLScriptElement.async api.HTMLScriptElement.crossOrigin api.HTMLScriptElement.defer api.HTMLScriptElement.integrity api.HTMLScriptElement.src api.HTMLScriptElement.supports_static api.HTMLScriptElement.text api.HTMLScriptElement.type html.elements.noscript html.elements.script html.elements.script.async html.elements.script.crossorigin html.elements.script.defer html.elements.script.integrity html.elements.script.src html.elements.script.type
scripting	scripting media query	The scripting CSS media query sets styles based on whether scripting such as JavaScript is available. Values are enabled if scripting is available, initial-only if scripting is only available on page load (for example, printed content), or none.	css.at-rules.media.scripting
scroll-behavior	scroll-behavior	The scroll-behavior CSS property controls whether scrolling is smooth or snaps, for scroll actions not performed by the user such as those triggered by navigation.	css.properties.scroll-behavior css.properties.scroll-behavior.auto css.properties.scroll-behavior.smooth
scroll-driven-animations	Scroll-driven animations	The animation-timeline, scroll-timeline, and view-timeline CSS properties advance animations based on the user's scroll position.	api.ScrollTimeline api.ScrollTimeline.ScrollTimeline api.ScrollTimeline.axis api.ScrollTimeline.source api.ViewTimeline api.ViewTimeline.ViewTimeline api.ViewTimeline.endOffset api.ViewTimeline.startOffset api.ViewTimeline.subject css.properties.animation-range css.properties.animation-range-end css.properties.animation-range-end.normal css.properties.animation-range-start css.properties.animation-range-start.normal css.properties.animation-timeline css.properties.animation-timeline.scroll css.properties.animation-timeline.view css.properties.animation.animation-timeline_included css.properties.scroll-timeline css.properties.scroll-timeline-axis css.properties.scroll-timeline-axis.block css.properties.scroll-timeline-axis.inline css.properties.scroll-timeline-axis.x css.properties.scroll-timeline-axis.y css.properties.scroll-timeline-name css.properties.timeline-scope css.properties.timeline-scope.all css.properties.timeline-scope.none css.properties.view-timeline css.properties.view-timeline-axis css.properties.view-timeline-axis.block css.properties.view-timeline-axis.inline css.properties.view-timeline-axis.x css.properties.view-timeline-axis.y css.properties.view-timeline-inset css.properties.view-timeline-inset.auto css.properties.view-timeline-name
scroll-elements	Scroll methods on elements	The scroll() and scrollBy() methods change the scroll position of overflow content within an element. Similar to setting scrollTop and scrollLeft properties, but with options setting whether the scroll should animate smoothly or jump. Note that scrollTo() is an alias for scroll().	api.Document.scroll_event api.Document.scrollingElement api.Element.scroll api.Element.scroll.options_behavior_parameter api.Element.scroll.options_left_parameter api.Element.scroll.options_top_parameter api.Element.scrollBy api.Element.scrollBy.options_behavior_parameter api.Element.scrollBy.options_left_parameter api.Element.scrollBy.options_top_parameter api.Element.scrollHeight api.Element.scrollLeft api.Element.scrollTo api.Element.scrollTo.options_behavior_parameter api.Element.scrollTo.options_left_parameter api.Element.scrollTo.options_top_parameter api.Element.scrollTop api.Element.scrollWidth api.Element.scroll_event api.Window.scroll api.Window.scroll.options_behavior_parameter api.Window.scroll.options_left_parameter api.Window.scroll.options_top_parameter api.Window.scrollBy api.Window.scrollBy.options_behavior_parameter api.Window.scrollBy.options_left_parameter api.Window.scrollBy.options_top_parameter api.Window.scrollTo api.Window.scrollTo.options_behavior_parameter api.Window.scrollTo.options_left_parameter api.Window.scrollTo.options_top_parameter api.Window.scrollX api.Window.scrollX.subpixel_precision api.Window.scrollY api.Window.scrollY.subpixel_precision
scroll-into-view	scrollIntoView()	The scrollIntoView() method scrolls an element's ancestor containers such that the element is visible to the user.	api.Element.scrollIntoView api.Element.scrollIntoView.options_parameter
scroll-snap	Scroll snap	CSS scroll snap controls the panning and scrolling behavior within a scroll container.	css.properties.scroll-margin css.properties.scroll-margin-block css.properties.scroll-margin-block-end css.properties.scroll-margin-block-start css.properties.scroll-margin-bottom css.properties.scroll-margin-inline css.properties.scroll-margin-inline-end css.properties.scroll-margin-inline-start css.properties.scroll-margin-left css.properties.scroll-margin-right css.properties.scroll-margin-top css.properties.scroll-padding css.properties.scroll-padding-block css.properties.scroll-padding-block-end css.properties.scroll-padding-block-end.auto css.properties.scroll-padding-block-start css.properties.scroll-padding-block-start.auto css.properties.scroll-padding-block.auto css.properties.scroll-padding-bottom css.properties.scroll-padding-inline css.properties.scroll-padding-inline-end css.properties.scroll-padding-inline-end.auto css.properties.scroll-padding-inline-start css.properties.scroll-padding-inline-start.auto css.properties.scroll-padding-inline.auto css.properties.scroll-padding-left css.properties.scroll-padding-right css.properties.scroll-padding-top css.properties.scroll-padding.auto css.properties.scroll-snap-align css.properties.scroll-snap-align.center css.properties.scroll-snap-align.end css.properties.scroll-snap-align.none css.properties.scroll-snap-align.start css.properties.scroll-snap-stop css.properties.scroll-snap-stop.always css.properties.scroll-snap-stop.normal css.properties.scroll-snap-type css.properties.scroll-snap-type.block css.properties.scroll-snap-type.both css.properties.scroll-snap-type.inline css.properties.scroll-snap-type.none css.properties.scroll-snap-type.x css.properties.scroll-snap-type.y
scroll-snap-events	Scroll snap events	The scrollsnapchanging and scrollsnapchange events fire when a scroll gesture changes the selected scroll snap target.	api.Document.scrollsnapchange_event api.Document.scrollsnapchanging_event api.Element.scrollsnapchange_event api.Element.scrollsnapchanging_event api.SnapEvent api.SnapEvent.SnapEvent api.SnapEvent.snapTargetBlock api.SnapEvent.snapTargetInline api.Window.scrollsnapchange_event api.Window.scrollsnapchanging_event
scroll-to-text-fragment	Scroll to text fragment	Text fragments are URL fragments on the form #:~:text=snippet and link to a snippet of text within a page. The browser may scroll, highlight, or otherwise bring that text to the reader's attention.	api.Document.fragmentDirective api.FragmentDirective html.elements.a.text_fragments
scrollbar-color	scrollbar-color	The scrollbar-color CSS property sets the color of the scrollbar track and thumb.	css.properties.scrollbar-color css.properties.scrollbar-color.auto
scrollbar-gutter	scrollbar-gutter	The scrollbar-gutter CSS property reserves space for the scrollbar, preventing unwanted layout changes as the scrollbar appears and disappears.	css.properties.scrollbar-gutter css.properties.scrollbar-gutter.auto css.properties.scrollbar-gutter.stable
scrollbar-width	scrollbar-width	The scrollbar-width CSS property sets the width of the scrollbar.	css.properties.scrollbar-width css.properties.scrollbar-width.auto css.properties.scrollbar-width.none css.properties.scrollbar-width.thin
scrollend	scrollend	The scrollend event fires when an element or document has finished scrolling.	api.Document.scrollend_event api.Element.scrollend_event
search	<search>	The <search> HTML element is a container that represents the parts of the web page with search functionality.	html.elements.search
search-input-type	<input type="search">	The <input type="search"> HTML element represents a text field for search queries.	html.elements.input.type_search
section	<section>	The <section> element is a generic standalone section of a document, which doesn't have a more specific semantic element to represent it.	html.elements.section
select	<select>	The <select> element provides a menu of options for a user to pick from, typically rendered as a dropdown list.	api.HTMLOptGroupElement api.HTMLOptGroupElement.disabled api.HTMLOptGroupElement.label api.HTMLOptionElement api.HTMLOptionElement.Option api.HTMLOptionElement.defaultSelected api.HTMLOptionElement.disabled api.HTMLOptionElement.form api.HTMLOptionElement.index api.HTMLOptionElement.label api.HTMLOptionElement.selected api.HTMLOptionElement.text api.HTMLOptionElement.value api.HTMLSelectElement api.HTMLSelectElement.add api.HTMLSelectElement.add.index_before_parameter api.HTMLSelectElement.autocomplete api.HTMLSelectElement.disabled api.HTMLSelectElement.form api.HTMLSelectElement.item api.HTMLSelectElement.labels api.HTMLSelectElement.length api.HTMLSelectElement.multiple api.HTMLSelectElement.name api.HTMLSelectElement.namedItem api.HTMLSelectElement.options api.HTMLSelectElement.remove api.HTMLSelectElement.required api.HTMLSelectElement.selectedIndex api.HTMLSelectElement.selectedOptions api.HTMLSelectElement.size api.HTMLSelectElement.type api.HTMLSelectElement.value html.elements.optgroup html.elements.optgroup.disabled html.elements.optgroup.label html.elements.option html.elements.option.disabled html.elements.option.label html.elements.option.selected html.elements.option.value html.elements.select html.elements.select.disabled html.elements.select.form html.elements.select.hr_in_select html.elements.select.multiple html.elements.select.name html.elements.select.required html.elements.select.size
selection	::selection	The ::selection CSS pseudo-element selects text a user has highlighted.	css.selectors.selection
selection-api	Selection	The Selection API controls and modifies user text selections within the page.	api.AbstractRange api.AbstractRange.collapsed api.AbstractRange.endContainer api.AbstractRange.endOffset api.AbstractRange.startContainer api.AbstractRange.startOffset api.Document.createRange api.Document.getSelection api.Document.selectionchange_event api.HTMLInputElement.selectionchange_event api.HTMLTextAreaElement.selectionchange_event api.Node.selectstart_event api.Range api.Range.Range api.Range.cloneContents api.Range.cloneRange api.Range.collapse api.Range.collapsed api.Range.commonAncestorContainer api.Range.compareBoundaryPoints api.Range.comparePoint api.Range.createContextualFragment api.Range.deleteContents api.Range.detach api.Range.endContainer api.Range.endOffset api.Range.extractContents api.Range.getBoundingClientRect api.Range.getClientRects api.Range.insertNode api.Range.intersectsNode api.Range.isPointInRange api.Range.selectNode api.Range.selectNodeContents api.Range.setEnd api.Range.setEndAfter api.Range.setEndBefore api.Range.setStart api.Range.setStartAfter api.Range.setStartBefore api.Range.startContainer api.Range.startOffset api.Range.surroundContents api.Range.toString api.Selection api.Selection.addRange api.Selection.anchorNode api.Selection.anchorOffset api.Selection.collapse api.Selection.collapseToEnd api.Selection.collapseToStart api.Selection.containsNode api.Selection.deleteFromDocument api.Selection.direction api.Selection.empty api.Selection.extend api.Selection.focusNode api.Selection.focusOffset api.Selection.getRangeAt api.Selection.isCollapsed api.Selection.modify api.Selection.rangeCount api.Selection.removeAllRanges api.Selection.removeRange api.Selection.selectAllChildren api.Selection.setBaseAndExtent api.Selection.setPosition api.Selection.toString api.Selection.type api.StaticRange api.StaticRange.StaticRange api.StaticRange.collapsed api.StaticRange.endContainer api.StaticRange.endOffset api.StaticRange.startContainer api.StaticRange.startOffset api.Window.getSelection
selectors	Selectors (core)	CSS selectors match elements based on their type, attributes, and relationship to other elements. They define the specific elements to which a block of styles will be applied. This feature represents the oldest selectors of CSS.	css.selectors.attribute css.selectors.child css.selectors.class css.selectors.descendant css.selectors.id css.selectors.list css.selectors.next-sibling css.selectors.subsequent-sibling css.selectors.type css.selectors.type.namespaces css.selectors.universal css.selectors.universal.namespaces
serial	Web serial	The navigator.serial API communicates with devices over serial ports, such as microcontrollers.	api.Navigator.serial api.Serial api.Serial.getPorts api.Serial.requestPort api.SerialPort api.SerialPort.close api.SerialPort.connect_event api.SerialPort.connected api.SerialPort.disconnect_event api.SerialPort.forget api.SerialPort.getInfo api.SerialPort.getSignals api.SerialPort.open api.SerialPort.readable api.SerialPort.setSignals api.SerialPort.writable api.WorkerNavigator.serial html.elements.iframe.allow.serial http.headers.Permissions-Policy.serial
serializable-errors	Serializable errors	The DOMException, Error, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, and URIError objects are serializable. You can call structuredClone() on an error object or pass it to a worker using postMessage().	api.DOMException.serializable_object javascript.builtins.Error.serializable_object javascript.builtins.EvalError.serializable_object javascript.builtins.RangeError.serializable_object javascript.builtins.ReferenceError.serializable_object javascript.builtins.SyntaxError.serializable_object javascript.builtins.TypeError.serializable_object javascript.builtins.URIError.serializable_object
server-sent-events	Server-sent events	The EventSource API creates a connection to a server and listens to a stream of events sent by the server.	api.EventSource api.EventSource.EventSource api.EventSource.EventSource.options_withCredentials_parameter api.EventSource.close api.EventSource.error_event api.EventSource.message_event api.EventSource.open_event api.EventSource.readyState api.EventSource.url api.EventSource.withCredentials api.EventSource.worker_support
server-timing	Server timing	The serverTiming property of the PerformanceResourceTiming API contains server timing information about network requests.	api.PerformanceResourceTiming.serverTiming api.PerformanceServerTiming api.PerformanceServerTiming.description api.PerformanceServerTiming.duration api.PerformanceServerTiming.name api.PerformanceServerTiming.toJSON http.headers.Server-Timing http.headers.Server-Timing.trailer
service-workers	Service workers	The service worker of a website is a script that runs in its own thread and which acts as local proxy that intercepts network requests from the website. Use a service worker to implement advanced caching strategies, offline support, background tasks, or push notification support on your website.	api.Cache api.Cache.add api.Cache.addAll api.Cache.delete api.Cache.keys api.Cache.match api.Cache.matchAll api.Cache.put api.Cache.worker_support api.CacheStorage api.CacheStorage.delete api.CacheStorage.has api.CacheStorage.keys api.CacheStorage.match api.CacheStorage.open api.CacheStorage.secure_context_required api.CacheStorage.worker_support api.Client api.Client.frameType api.Client.id api.Client.postMessage api.Client.type api.Client.url api.Clients api.Clients.claim api.Clients.get api.Clients.matchAll api.Clients.matchAll.options_includeUncontrolled_parameter api.Clients.openWindow api.ExtendableEvent api.ExtendableEvent.ExtendableEvent api.ExtendableEvent.waitUntil api.ExtendableEvent.waitUntil.async_waitUntil api.ExtendableMessageEvent api.ExtendableMessageEvent.ExtendableMessageEvent api.ExtendableMessageEvent.data api.ExtendableMessageEvent.lastEventId api.ExtendableMessageEvent.origin api.ExtendableMessageEvent.ports api.ExtendableMessageEvent.source api.FetchEvent api.FetchEvent.FetchEvent api.FetchEvent.clientId api.FetchEvent.handled api.FetchEvent.preloadResponse api.FetchEvent.request api.FetchEvent.respondWith api.FetchEvent.respondWith.networkerror_on_same-origin_cors api.FetchEvent.respondWith.resource_url api.FetchEvent.resultingClientId api.InstallEvent api.InstallEvent.InstallEvent api.InstallEvent.addRoutes api.NavigationPreloadManager api.NavigationPreloadManager.disable api.NavigationPreloadManager.enable api.NavigationPreloadManager.getState api.NavigationPreloadManager.setHeaderValue api.Navigator.serviceWorker api.ServiceWorker api.ServiceWorker.postMessage api.ServiceWorker.scriptURL api.ServiceWorker.state api.ServiceWorker.statechange_event api.ServiceWorkerContainer api.ServiceWorkerContainer.controller api.ServiceWorkerContainer.controllerchange_event api.ServiceWorkerContainer.getRegistration api.ServiceWorkerContainer.getRegistrations api.ServiceWorkerContainer.message_event api.ServiceWorkerContainer.ready api.ServiceWorkerContainer.register api.ServiceWorkerContainer.startMessages api.ServiceWorkerContainer.worker_support api.ServiceWorkerGlobalScope api.ServiceWorkerGlobalScope.activate_event api.ServiceWorkerGlobalScope.clients api.ServiceWorkerGlobalScope.fetch_event api.ServiceWorkerGlobalScope.install_event api.ServiceWorkerGlobalScope.message_event api.ServiceWorkerGlobalScope.messageerror_event api.ServiceWorkerGlobalScope.registration api.ServiceWorkerGlobalScope.serviceWorker api.ServiceWorkerGlobalScope.skipWaiting api.ServiceWorkerRegistration.active api.ServiceWorkerRegistration.installing api.ServiceWorkerRegistration.navigationPreload api.ServiceWorkerRegistration.scope api.ServiceWorkerRegistration.unregister api.ServiceWorkerRegistration.update api.ServiceWorkerRegistration.updateViaCache api.ServiceWorkerRegistration.updatefound_event api.ServiceWorkerRegistration.waiting api.WindowClient api.WindowClient.ancestorOrigins api.WindowClient.focus api.WindowClient.focused api.WindowClient.navigate api.WindowClient.visibilityState api.WorkerNavigator.serviceWorker api.caches api.caches.secure_context_required api.caches.worker_support http.headers.Service-Worker-Navigation-Preload
set	Set (initial support)	Set objects store unique values of any type.	javascript.builtins.Set javascript.builtins.Set.@@iterator javascript.builtins.Set.@@species javascript.builtins.Set.Set javascript.builtins.Set.Set.iterable_allowed javascript.builtins.Set.Set.null_allowed javascript.builtins.Set.add javascript.builtins.Set.clear javascript.builtins.Set.delete javascript.builtins.Set.entries javascript.builtins.Set.forEach javascript.builtins.Set.has javascript.builtins.Set.key_equality_for_zeros javascript.builtins.Set.keys javascript.builtins.Set.size javascript.builtins.Set.values
set-methods	Set methods	The difference(), intersection(), isDisjointFrom(), isSubsetOf(), isSupersetOf(), symmetricDifference(), and union() methods of the JavaScript Set object performs operations between two sets.	javascript.builtins.Set.difference javascript.builtins.Set.intersection javascript.builtins.Set.isDisjointFrom javascript.builtins.Set.isSubsetOf javascript.builtins.Set.isSupersetOf javascript.builtins.Set.symmetricDifference javascript.builtins.Set.union
setinterval	setInterval	The setInterval() global function repeatedly executes provided code on a given delay, and the accompanying clearInterval() cancels the interval.	api.clearInterval api.setInterval
settimeout	setTimeout	The setTimeout() global function executes provided code after a given duration of time, and the accompanying clearTimeout() cancels the timer.	api.clearTimeout api.setTimeout
shadow-dom	Shadow DOM	Shadow DOM allows you to attach encapsulated "shadow" DOM trees to elements. A shadow DOM tree is a separate component, isolated from the scripts and styles in other parts of the document. This is a part of Web Components.	api.Element.attachShadow api.Element.shadowRoot api.Event.composed api.Event.composedPath api.Node.getRootNode api.Node.isConnected api.ShadowRoot api.ShadowRoot.clonable api.ShadowRoot.host api.ShadowRoot.mode
shadow-parts	Shadow parts	The part and exportparts HTML attributes expose elements of a shadow DOM as named parts, which can be selected by the ::part() CSS pseudo-element for styling.	api.Element.part css.selectors.part html.global_attributes.exportparts html.global_attributes.part
shape-outside	shape-outside	The shape-outside CSS property, along with shape-margin and shape-image-threshold, sets the shape around which adjacent content will wrap.	css.properties.shape-image-threshold css.properties.shape-image-threshold.percentages css.properties.shape-margin css.properties.shape-outside css.properties.shape-outside.circle css.properties.shape-outside.gradient css.properties.shape-outside.image css.properties.shape-outside.inset css.properties.shape-outside.none css.properties.shape-outside.path css.properties.shape-outside.polygon
shapes	shapes	The circle(), ellipse(), inset(), polygon(), rect(), and xywh() CSS shape functions create shapes for use with clip-path and shape-outside.	css.types.basic-shape css.types.basic-shape.animation css.types.basic-shape.circle css.types.basic-shape.ellipse css.types.basic-shape.inset css.types.basic-shape.polygon css.types.basic-shape.rect css.types.basic-shape.shape css.types.basic-shape.xywh
share	navigator.share()	The navigator.share() method invokes the device's native sharing mechanism and passes text, links, files, and other content to share targets.	api.Navigator.canShare api.Navigator.canShare.data_files_parameter api.Navigator.canShare.data_text_parameter api.Navigator.share api.Navigator.share.data_files_parameter api.Navigator.share.data_text_parameter html.elements.iframe.allow.web-share http.headers.Permissions-Policy.web-share
shared-memory	SharedArrayBuffer and Atomics	The SharedArrayBuffer object represents bytes shared between multiple workers and the main thread. The Atomics object safely accesses SharedArrayBuffer data to make sure predictable values are read and written and that operations are not interrupted.	javascript.builtins.Atomics javascript.builtins.Atomics.Atomic_operations_on_non_shared_buffers javascript.builtins.Atomics.add javascript.builtins.Atomics.and javascript.builtins.Atomics.compareExchange javascript.builtins.Atomics.exchange javascript.builtins.Atomics.isLockFree javascript.builtins.Atomics.load javascript.builtins.Atomics.notify javascript.builtins.Atomics.or javascript.builtins.Atomics.store javascript.builtins.Atomics.sub javascript.builtins.Atomics.wait javascript.builtins.Atomics.xor javascript.builtins.DataView.DataView.sharedarraybuffer_support javascript.builtins.SharedArrayBuffer javascript.builtins.SharedArrayBuffer.@@species javascript.builtins.SharedArrayBuffer.SharedArrayBuffer javascript.builtins.SharedArrayBuffer.byteLength javascript.builtins.SharedArrayBuffer.slice
shared-storage	Shared storage	The sharedStorage API stores data to a shared space where the data can then be processed without the ability to track users across the different sites they visit. A common use case is measuring the reach of third-party ads without using user-tracking cookies."	api.HTMLIFrameElement.sharedStorageWritable api.HTMLImageElement.sharedStorageWritable api.SharedStorage api.SharedStorage.append api.SharedStorage.clear api.SharedStorage.createWorklet api.SharedStorage.delete api.SharedStorage.get api.SharedStorage.run api.SharedStorage.selectURL api.SharedStorage.set api.SharedStorage.worklet api.SharedStorageWorklet api.SharedStorageWorklet.run api.SharedStorageWorklet.selectURL api.SharedStorageWorkletGlobalScope api.SharedStorageWorkletGlobalScope.register api.SharedStorageWorkletGlobalScope.sharedStorage api.Window.sharedStorage
show-picker-input	showPicker() for <input>	The showPicker() method for <input> elements shows the user interface for picking a value. For example, for <input type="date"> it shows the interface for picking a date.	api.HTMLInputElement.showPicker api.HTMLInputElement.showPicker.color_input api.HTMLInputElement.showPicker.date_input api.HTMLInputElement.showPicker.datetime_local_input api.HTMLInputElement.showPicker.file_input
show-picker-select	showPicker() for <select>	The showPicker() method for <select> elements shows the dropdown menu or other user interface for picking one of the options.	api.HTMLSelectElement.showPicker
slot	<slot>	The <slot> HTML element is a placeholder inside a web component where consumers of the component can insert their own markup.	api.Element.assignedSlot api.Element.slot api.HTMLSlotElement api.HTMLSlotElement.assignedElements api.HTMLSlotElement.assignedNodes api.HTMLSlotElement.name api.HTMLSlotElement.slotchange_event api.Text.assignedSlot css.selectors.slotted html.elements.slot html.elements.slot.name html.global_attributes.slot
slot-assign	Imperative slot assignment	The assign() method for <slot> elements assigns nodes to the slot, as an alternative to using the slot and name HTML attributes. The nodes must be children of a shadow host and the shadow root must be created with the slotAssignment set to "manual". Also known as manual slot assignment.	api.HTMLSlotElement.assign api.ShadowRoot.slotAssignment
small	<small>	The <small> element represents side-comments and small print, like copyright and legal text, independent of its styled presentation. Styled in a reduced font size by default.	html.elements.small
smil-svg-animations	SMIL SVG animations	The <animate>, <animateMotion>, and <animateTransform> SVG elements declaratively animate SVG elements. Also known as SMIL.	api.SVGAnimateElement api.SVGAnimateMotionElement api.SVGAnimateTransformElement api.SVGAnimatedAngle api.SVGAnimatedAngle.animVal api.SVGAnimatedAngle.baseVal api.SVGAnimatedBoolean api.SVGAnimatedBoolean.animVal api.SVGAnimatedBoolean.baseVal api.SVGAnimatedEnumeration api.SVGAnimatedEnumeration.animVal api.SVGAnimatedEnumeration.baseVal api.SVGAnimatedInteger api.SVGAnimatedInteger.animVal api.SVGAnimatedInteger.baseVal api.SVGAnimatedLength api.SVGAnimatedLength.animVal api.SVGAnimatedLength.baseVal api.SVGAnimatedLengthList api.SVGAnimatedLengthList.animVal api.SVGAnimatedLengthList.baseVal api.SVGAnimatedNumber api.SVGAnimatedNumber.animVal api.SVGAnimatedNumber.baseVal api.SVGAnimatedNumberList api.SVGAnimatedNumberList.animVal api.SVGAnimatedNumberList.baseVal api.SVGAnimatedPreserveAspectRatio api.SVGAnimatedPreserveAspectRatio.animVal api.SVGAnimatedPreserveAspectRatio.baseVal api.SVGAnimatedRect api.SVGAnimatedRect.animVal api.SVGAnimatedRect.baseVal api.SVGAnimatedString api.SVGAnimatedString.animVal api.SVGAnimatedString.baseVal api.SVGAnimatedTransformList api.SVGAnimatedTransformList.animVal api.SVGAnimatedTransformList.baseVal api.SVGAnimationElement api.SVGAnimationElement.beginElement api.SVGAnimationElement.beginElementAt api.SVGAnimationElement.beginEvent_event api.SVGAnimationElement.endElement api.SVGAnimationElement.endElementAt api.SVGAnimationElement.endEvent_event api.SVGAnimationElement.getCurrentTime api.SVGAnimationElement.getSimpleDuration api.SVGAnimationElement.getStartTime api.SVGAnimationElement.repeatEvent_event api.SVGAnimationElement.requiredExtensions api.SVGAnimationElement.systemLanguage api.SVGAnimationElement.targetElement api.SVGPolygonElement.animatedPoints api.SVGPolylineElement.animatedPoints api.SVGSVGElement.animationsPaused api.SVGSVGElement.pauseAnimations api.SVGSVGElement.unpauseAnimations api.TimeEvent api.TimeEvent.detail api.TimeEvent.initTimeEvent api.TimeEvent.view svg.elements.animate svg.elements.animate.attributeName svg.elements.animate.attributeType svg.elements.animate.dur svg.elements.animate.fill svg.elements.animate.from svg.elements.animate.href svg.elements.animate.repeatCount svg.elements.animate.systemLanguage svg.elements.animate.to svg.elements.animateMotion svg.elements.animateMotion.calcMode svg.elements.animateMotion.fill svg.elements.animateMotion.href svg.elements.animateMotion.keyPoints svg.elements.animateMotion.origin svg.elements.animateMotion.path svg.elements.animateMotion.rotate svg.elements.animateMotion.systemLanguage svg.elements.animateTransform svg.elements.animateTransform.by svg.elements.animateTransform.fill svg.elements.animateTransform.from svg.elements.animateTransform.href svg.elements.animateTransform.systemLanguage svg.elements.animateTransform.to svg.elements.animateTransform.type svg.global_attributes.class.animation_support
smooth	smooth	The image-rendering: smooth CSS declaration scales images while retaining a gradual color blending that is useful for photos.	css.properties.image-rendering.smooth
source	<source>	The <source> element sets a media resource for the <picture>, <video>, and <audio> elements.	html.elements.source html.elements.source.height html.elements.source.media html.elements.source.src html.elements.source.type html.elements.source.width
sourcemap-header	Sourcemap header	The Sourcemap HTTP response header links generated code to a source map, so the browser shows the original source in a debugger. This makes it easier to work with minified or transpiled code.	http.headers.SourceMap
span	<span>	The <span> HTML element is the generic inline container for content.	api.HTMLSpanElement html.elements.span
speak	speak	The speak CSS property sets whether or not text should be spoken.	css.properties.speak
speak-as	speak-as	The speak-as CSS property sets how any element's content is spoken. Not to be confused with the speak-as descriptor of @counter-style at-rules.	css.properties.speak-as css.properties.speak-as.digits css.properties.speak-as.literal-punctuation css.properties.speak-as.no-punctuation css.properties.speak-as.normal css.properties.speak-as.spell-out
speculation-rules	Speculation rules	Speculation rules are hints to the browser to proactively download pages in the background so they appear instantly when the user navigates to them.	api.Document.prerendering api.Document.prerenderingchange_event api.PerformanceNavigationTiming.activationStart html.elements.script.type.speculationrules html.elements.script.type.speculationrules.eagerness html.elements.script.type.speculationrules.expects_no_vary_search html.elements.script.type.speculationrules.prefetch html.elements.script.type.speculationrules.prerender html.elements.script.type.speculationrules.referrer_policy html.elements.script.type.speculationrules.relative_to html.elements.script.type.speculationrules.requires html.elements.script.type.speculationrules.requires.anonymous-client-ip-when-cross-origin html.elements.script.type.speculationrules.source_optional html.elements.script.type.speculationrules.urls html.elements.script.type.speculationrules.where http.headers.Content-Security-Policy.script-src.inline-speculation-rules http.headers.Sec-Purpose.speculationrules http.headers.Speculation-Rules http.headers.Supports-Loading-Mode http.headers.Supports-Loading-Mode.credentialed-prerender http.headers.Supports-Loading-Mode.fenced-frames
speech-recognition	Speech recognition	The SpeechRecognition API converts audio into text using the device's speech recognition service.	api.SpeechGrammar api.SpeechGrammar.src api.SpeechGrammar.weight api.SpeechGrammarList api.SpeechGrammarList.SpeechGrammarList api.SpeechGrammarList.addFromString api.SpeechGrammarList.addFromURI api.SpeechGrammarList.item api.SpeechGrammarList.length api.SpeechRecognition api.SpeechRecognition.SpeechRecognition api.SpeechRecognition.abort api.SpeechRecognition.audioend_event api.SpeechRecognition.audiostart_event api.SpeechRecognition.continuous api.SpeechRecognition.end_event api.SpeechRecognition.error_event api.SpeechRecognition.grammars api.SpeechRecognition.interimResults api.SpeechRecognition.lang api.SpeechRecognition.maxAlternatives api.SpeechRecognition.nomatch_event api.SpeechRecognition.result_event api.SpeechRecognition.soundend_event api.SpeechRecognition.soundstart_event api.SpeechRecognition.speechend_event api.SpeechRecognition.speechstart_event api.SpeechRecognition.start api.SpeechRecognition.start_event api.SpeechRecognition.stop api.SpeechRecognitionAlternative api.SpeechRecognitionAlternative.confidence api.SpeechRecognitionAlternative.transcript api.SpeechRecognitionErrorEvent api.SpeechRecognitionErrorEvent.SpeechRecognitionErrorEvent api.SpeechRecognitionErrorEvent.error api.SpeechRecognitionErrorEvent.message api.SpeechRecognitionEvent api.SpeechRecognitionEvent.SpeechRecognitionEvent api.SpeechRecognitionEvent.resultIndex api.SpeechRecognitionEvent.results api.SpeechRecognitionResult api.SpeechRecognitionResult.isFinal api.SpeechRecognitionResult.item api.SpeechRecognitionResult.length api.SpeechRecognitionResultList api.SpeechRecognitionResultList.item api.SpeechRecognitionResultList.length
speech-synthesis	Speech synthesis	The SpeechSynthesis API converts text to speech with artificial voices.	api.SpeechSynthesis api.SpeechSynthesis.cancel api.SpeechSynthesis.getVoices api.SpeechSynthesis.pause api.SpeechSynthesis.paused api.SpeechSynthesis.pending api.SpeechSynthesis.resume api.SpeechSynthesis.speak api.SpeechSynthesis.speaking api.SpeechSynthesis.voiceschanged_event api.SpeechSynthesisErrorEvent api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent api.SpeechSynthesisErrorEvent.error api.SpeechSynthesisEvent api.SpeechSynthesisEvent.SpeechSynthesisEvent api.SpeechSynthesisEvent.charIndex api.SpeechSynthesisEvent.charLength api.SpeechSynthesisEvent.elapsedTime api.SpeechSynthesisEvent.name api.SpeechSynthesisEvent.utterance api.SpeechSynthesisUtterance api.SpeechSynthesisUtterance.SpeechSynthesisUtterance api.SpeechSynthesisUtterance.boundary_event api.SpeechSynthesisUtterance.end_event api.SpeechSynthesisUtterance.error_event api.SpeechSynthesisUtterance.lang api.SpeechSynthesisUtterance.mark_event api.SpeechSynthesisUtterance.pause_event api.SpeechSynthesisUtterance.pitch api.SpeechSynthesisUtterance.rate api.SpeechSynthesisUtterance.resume_event api.SpeechSynthesisUtterance.start_event api.SpeechSynthesisUtterance.text api.SpeechSynthesisUtterance.voice api.SpeechSynthesisUtterance.volume api.SpeechSynthesisVoice api.SpeechSynthesisVoice.default api.SpeechSynthesisVoice.lang api.SpeechSynthesisVoice.localService api.SpeechSynthesisVoice.name api.SpeechSynthesisVoice.voiceURI api.Window.speechSynthesis
spellcheck	Spellcheck	The spellcheck global HTML attribute sets whether the browser may check an element for spelling errors.	api.HTMLElement.spellcheck html.global_attributes.spellcheck
spelling-grammar-error	::spelling-error and ::grammar-error	The ::spelling-error and ::grammar-error CSS pseudo-elements match text that is highlighted as misspelled and grammatically incorrect, respectively.	css.selectors.grammar-error css.selectors.spelling-error
spread	Spread syntax	The spread (...) syntax allows an iterable, such as an array or string, to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected.	javascript.operators.spread javascript.operators.spread.spread_in_arrays javascript.operators.spread.spread_in_function_calls javascript.operators.spread.spread_in_object_literals
srcset	srcset and sizes	The srcset and sizes attributes for <img> elements set a list of possible sources for the image and a corresponding list of size conditions for choosing a source, to show a responsive image that fits the size of the display.	api.HTMLImageElement.sizes api.HTMLImageElement.srcset api.HTMLSourceElement.sizes api.HTMLSourceElement.srcset html.elements.img.sizes html.elements.img.srcset html.elements.source.sizes html.elements.source.srcset
stable-array-sort	Stable array sort	Stable array sort() function	javascript.builtins.Array.sort.stable_sorting
starting-style	@starting-style	The @starting-style CSS at-rule sets the starting values for properties that are transitioning when the target element's style is first updated.	api.CSSStartingStyleRule css.at-rules.starting-style
state	:state()	The :state() CSS pseudo-class matches custom elements based on their custom state, set through the ElementInternals.states API.	api.CustomStateSet api.CustomStateSet.@@iterator api.CustomStateSet.add api.CustomStateSet.clear api.CustomStateSet.delete api.CustomStateSet.entries api.CustomStateSet.forEach api.CustomStateSet.has api.CustomStateSet.keys api.CustomStateSet.size api.CustomStateSet.values api.ElementInternals.states css.selectors.state
static-positioning	Static positioning	The position: static CSS declaration positions an element in the normal flow. A statically positioned element ignores physical and logical properties such as top or inset-block-start.	css.properties.position.static
steps-easing	steps() easing	The steps() CSS easing function divides an animation or transition into equidistant intervals, jumping from value to value. The step-start and step-end keyword values are presets with a single interval.	css.types.easing-function.steps css.types.easing-function.steps.jump
sticky-positioning	Sticky positioning	The position: sticky CSS declaration positions an element in the normal flow until it crosses a specified threshold, at which points it becomes fixed (stuck) at that position.	css.properties.position.position_sticky_table_elements css.properties.position.sticky
storage-access	Storage access	The document.requestStorageAccess() method allows content in iframes to request storing and reading cookies and other site data, while the document.hasStorageAccess() method checks if such access is granted.	api.Document.hasStorageAccess api.Document.requestStorageAccess api.Document.requestStorageAccessFor api.Permissions.permission_storage-access api.Permissions.permission_top-level-storage-access html.elements.iframe.allow.storage-access http.headers.Permissions-Policy.storage-access
storage-buckets	Storage buckets	The navigator.storageBuckets API allows you to organize locally stored data into groups called storage buckets. Each bucket can have different settings, allowing the browser to manage and delete buckets independently rather than applying the same treatment to all.	api.Navigator.storageBuckets api.StorageBucket api.StorageBucket.caches api.StorageBucket.estimate api.StorageBucket.expires api.StorageBucket.getDirectory api.StorageBucket.indexedDB api.StorageBucket.name api.StorageBucket.persist api.StorageBucket.persisted api.StorageBucket.setExpires api.StorageBucketManager api.StorageBucketManager.delete api.StorageBucketManager.keys api.StorageBucketManager.open api.WorkerNavigator.storageBuckets
storage-manager	Storage manager	The navigator.storage API provides information about the availability and persistence of the data that a site stores on the device, by using APIs such as the Cache API or the IndexedDB API.	api.Navigator.storage api.StorageManager api.StorageManager.estimate api.StorageManager.persist api.StorageManager.persisted api.WorkerNavigator.storage
streams	Streams	The streams API creates, composes, and consumes continuously generated data.	api.ByteLengthQueuingStrategy api.ByteLengthQueuingStrategy.ByteLengthQueuingStrategy api.ByteLengthQueuingStrategy.highWaterMark api.ByteLengthQueuingStrategy.size api.CountQueuingStrategy api.CountQueuingStrategy.CountQueuingStrategy api.CountQueuingStrategy.highWaterMark api.CountQueuingStrategy.size api.ReadableByteStreamController api.ReadableByteStreamController.byobRequest api.ReadableByteStreamController.close api.ReadableByteStreamController.desiredSize api.ReadableByteStreamController.enqueue api.ReadableByteStreamController.error api.ReadableStream api.ReadableStream.ReadableStream api.ReadableStream.cancel api.ReadableStream.from_static api.ReadableStream.getReader api.ReadableStream.locked api.ReadableStream.pipeThrough api.ReadableStream.pipeTo api.ReadableStream.tee api.ReadableStream.transferable api.ReadableStream.values api.ReadableStreamBYOBReader api.ReadableStreamBYOBReader.ReadableStreamBYOBReader api.ReadableStreamBYOBReader.cancel api.ReadableStreamBYOBReader.closed api.ReadableStreamBYOBReader.read api.ReadableStreamBYOBReader.read.options_min_parameter api.ReadableStreamBYOBReader.releaseLock api.ReadableStreamBYOBReader.releaseLock.reject_pending_read_request api.ReadableStreamBYOBRequest api.ReadableStreamBYOBRequest.respond api.ReadableStreamBYOBRequest.respondWithNewView api.ReadableStreamBYOBRequest.view api.ReadableStreamDefaultController api.ReadableStreamDefaultController.close api.ReadableStreamDefaultController.desiredSize api.ReadableStreamDefaultController.enqueue api.ReadableStreamDefaultController.error api.ReadableStreamDefaultReader api.ReadableStreamDefaultReader.ReadableStreamDefaultReader api.ReadableStreamDefaultReader.cancel api.ReadableStreamDefaultReader.closed api.ReadableStreamDefaultReader.read api.ReadableStreamDefaultReader.releaseLock api.ReadableStreamDefaultReader.releaseLock.reject_pending_read_request api.TextDecoderStream.readable api.TextDecoderStream.writable api.TextEncoderStream.readable api.TextEncoderStream.writable api.TransformStream api.TransformStream.TransformStream api.TransformStream.readable api.TransformStream.transferable api.TransformStream.writable api.TransformStreamDefaultController api.TransformStreamDefaultController.desiredSize api.TransformStreamDefaultController.enqueue api.TransformStreamDefaultController.error api.TransformStreamDefaultController.terminate api.WritableStream api.WritableStream.WritableStream api.WritableStream.abort api.WritableStream.close api.WritableStream.getWriter api.WritableStream.locked api.WritableStream.transferable api.WritableStreamDefaultController api.WritableStreamDefaultController.error api.WritableStreamDefaultController.signal api.WritableStreamDefaultWriter api.WritableStreamDefaultWriter.WritableStreamDefaultWriter api.WritableStreamDefaultWriter.abort api.WritableStreamDefaultWriter.close api.WritableStreamDefaultWriter.closed api.WritableStreamDefaultWriter.desiredSize api.WritableStreamDefaultWriter.ready api.WritableStreamDefaultWriter.releaseLock api.WritableStreamDefaultWriter.write
stretch	stretch	The stretch CSS keyword expands a box as needed to fit its contents until the maximum size is reached, without preserving the content's preferred aspect ratio.	css.properties.height.stretch css.properties.max-height.stretch css.properties.max-width.stretch css.properties.min-height.stretch css.properties.min-width.stretch css.properties.width.stretch
string-at	String at()	The at() method of strings returns the character (one UTF-16 code unit) at an index, including negative indices for getting the character relative to the end of the string. Also known as the relative indexing method.	javascript.builtins.String.at
string-codepoint	String codePointAt() and fromCodePoint()	The codePointAt() method returns the numeric value of the UTF-16 code point at an index of the string. The fromCodePoint() method returns a string created from one or more code points.	javascript.builtins.String.codePointAt javascript.builtins.String.fromCodePoint
string-includes	String includes()	The includes() method of strings returns whether a search string appears within the string.	javascript.builtins.String.includes
string-matchall	String matchAll()	The matchAll() method of strings matches a string against a regular expression and returns an iterator of all results, including capturing groups.	javascript.builtins.String.matchAll
string-normalize	String normalize()	The normalize() method of strings returns a Unicode normal form of a string as a new string. More than one code point sequence can represent the same characters. You can use the normalize() method to find canonically or compatibly equivalent strings.	javascript.builtins.String.normalize
string-pad	String padStart() and padEnd()	The padStart() and padEnd() methods of strings return a string lengthened to a minimum number of characters by adding characters to the start or end of the string.	javascript.builtins.String.padEnd javascript.builtins.String.padStart
string-raw	String raw()	The String.raw() static method interpolates template literal substitutions, but ignores escape sequences. It is the tag function for template literals.	javascript.builtins.String.raw
string-repeat	String repeat()	The repeat() method of strings returns the original string repeated a number of times.	javascript.builtins.String.repeat
string-replaceall	String replaceAll()	The replaceAll() method of strings returns a new string where all matches of a pattern (a string or regular expression) have been substituted with a replacement string.	javascript.builtins.String.replaceAll
string-startsends-with	String startsWith() and endsWith()	The startsWith() and endsWith() methods of strings returns whether a search string appears at the beginning or end of the provided string.	javascript.builtins.String.endsWith javascript.builtins.String.startsWith
string-trim-startend	String trimStart() and trimEnd()	The trimStart() and trimEnd() methods of strings return a new string with whitespace removed from the beginning or end of the string.	javascript.builtins.String.trimEnd javascript.builtins.String.trimStart
string-wellformed	String isWellFormed() and toWellFormed()	The isWellFormed() method of strings returns a boolean indicating if the string contains any Unicode lone surrogates. The toWellFormed() method returns a new string where all lone surrogates are replaced by the Unicode replacement character.	javascript.builtins.String.isWellFormed javascript.builtins.String.toWellFormed
strings	String (initial support)	The string type (and String object) represents a sequence of characters.	javascript.builtins.String javascript.builtins.String.@@iterator javascript.builtins.String.String javascript.builtins.String.charAt javascript.builtins.String.charCodeAt javascript.builtins.String.concat javascript.builtins.String.fromCharCode javascript.builtins.String.indexOf javascript.builtins.String.lastIndexOf javascript.builtins.String.length javascript.builtins.String.match javascript.builtins.String.replace javascript.builtins.String.search javascript.builtins.String.slice javascript.builtins.String.split javascript.builtins.String.substring javascript.builtins.String.toLowerCase javascript.builtins.String.toString javascript.builtins.String.toUpperCase javascript.builtins.String.trim javascript.builtins.String.unicode_code_point_escapes javascript.builtins.String.valueOf javascript.grammar.string_literals
strong	<strong>	The <strong> HTML element brings attention to the content, styling text as bold by default.	html.elements.strong
structured-clone	structuredClone()	The structuredClone() global method creates a deep copy of an object. Values that cannot be cloned can instead be transferred, making the original value no longer usable.	api.structuredClone
style	<style>	The <style> element embeds an inline CSS stylesheet in a document.	api.HTMLStyleElement api.HTMLStyleElement.disabled api.HTMLStyleElement.media html.elements.style html.elements.style.media
style-attr	style (attribute)	The style global HTML attribute applies inline CSS styling declarations to individual elements.	html.global_attributes.style
sub-sup	<sub> and <sup>	The <sub> and <sup> elements sets inline text to be displayed as subscript or superscript for solely typographical reasons.	html.elements.sub html.elements.sup
subgrid	Subgrid	The subgrid value for the grid-template-columns and grid-template-rows properties allows a grid item to inherit the grid definition of its parent grid container.	css.properties.grid-template-columns.subgrid css.properties.grid-template-rows.subgrid
supports	@supports	The @supports at-rule applies styles based on a browser's support for CSS features, such as a CSS property and value. Also known as feature queries.	api.CSSImportRule.supportsText api.CSSSupportsRule css.at-rules.import.supports css.at-rules.supports css.at-rules.supports.font-format css.at-rules.supports.font-tech css.at-rules.supports.selector
supports-compat	@supports (compatibility prefix)	The @supports (-webkit-transform-3d) CSS media query is a standardized compatibility alternative to @supports (transform-style).	css.at-rules.media.-webkit-transform-3d
svg	SVG	The SVG image format, represented by the <svg> element, creates two-dimensional vector graphics with declarative or scripted interaction and animation.	api.CanvasRenderingContext2D.drawImage.SVGImageElement_source_image api.DOMParser.parseFromString.svg api.SVGAElement api.SVGAElement.href api.SVGAElement.hreflang api.SVGAElement.referrerPolicy api.SVGAElement.rel api.SVGAElement.relList api.SVGAElement.target api.SVGAElement.type api.SVGAngle api.SVGAngle.convertToSpecifiedUnits api.SVGAngle.newValueSpecifiedUnits api.SVGAngle.unitType api.SVGAngle.value api.SVGAngle.valueAsString api.SVGAngle.valueInSpecifiedUnits api.SVGCircleElement api.SVGCircleElement.cx api.SVGCircleElement.cy api.SVGCircleElement.r api.SVGComponentTransferFunctionElement api.SVGComponentTransferFunctionElement.amplitude api.SVGComponentTransferFunctionElement.exponent api.SVGComponentTransferFunctionElement.intercept api.SVGComponentTransferFunctionElement.offset api.SVGComponentTransferFunctionElement.slope api.SVGComponentTransferFunctionElement.tableValues api.SVGComponentTransferFunctionElement.type api.SVGDefsElement api.SVGDescElement api.SVGElement api.SVGElement.attributeStyleMap api.SVGElement.blur api.SVGElement.error_event api.SVGElement.focus api.SVGElement.focus.options_preventScroll_parameter api.SVGElement.load_event api.SVGElement.nonce api.SVGElement.ownerSVGElement api.SVGElement.style api.SVGElement.tabIndex api.SVGElement.viewportElement api.SVGEllipseElement api.SVGEllipseElement.cx api.SVGEllipseElement.cy api.SVGEllipseElement.rx api.SVGEllipseElement.ry api.SVGForeignObjectElement api.SVGForeignObjectElement.height api.SVGForeignObjectElement.width api.SVGForeignObjectElement.x api.SVGForeignObjectElement.y api.SVGGElement api.SVGGeometryElement api.SVGGeometryElement.getPointAtLength api.SVGGeometryElement.getTotalLength api.SVGGeometryElement.isPointInFill api.SVGGeometryElement.isPointInFill.point_parameter_DOMPoint api.SVGGeometryElement.isPointInStroke api.SVGGeometryElement.isPointInStroke.point_parameter_DOMPoint api.SVGGeometryElement.pathLength api.SVGGradientElement api.SVGGradientElement.gradientTransform api.SVGGradientElement.gradientUnits api.SVGGradientElement.href api.SVGGradientElement.spreadMethod api.SVGGraphicsElement api.SVGGraphicsElement.getBBox api.SVGGraphicsElement.getCTM api.SVGGraphicsElement.getScreenCTM api.SVGGraphicsElement.requiredExtensions api.SVGGraphicsElement.systemLanguage api.SVGGraphicsElement.transform api.SVGImageElement api.SVGImageElement.crossOrigin api.SVGImageElement.decode api.SVGImageElement.decoding api.SVGImageElement.height api.SVGImageElement.href api.SVGImageElement.preserveAspectRatio api.SVGImageElement.width api.SVGImageElement.x api.SVGImageElement.y api.SVGLength api.SVGLength.convertToSpecifiedUnits api.SVGLength.newValueSpecifiedUnits api.SVGLength.unitType api.SVGLength.value api.SVGLength.valueAsString api.SVGLength.valueInSpecifiedUnits api.SVGLengthList api.SVGLengthList.appendItem api.SVGLengthList.clear api.SVGLengthList.getItem api.SVGLengthList.initialize api.SVGLengthList.insertItemBefore api.SVGLengthList.length api.SVGLengthList.numberOfItems api.SVGLengthList.removeItem api.SVGLengthList.replaceItem api.SVGLineElement api.SVGLineElement.x1 api.SVGLineElement.x2 api.SVGLineElement.y1 api.SVGLineElement.y2 api.SVGLinearGradientElement api.SVGLinearGradientElement.x1 api.SVGLinearGradientElement.x2 api.SVGLinearGradientElement.y1 api.SVGLinearGradientElement.y2 api.SVGMPathElement api.SVGMPathElement.href api.SVGMarkerElement api.SVGMarkerElement.markerHeight api.SVGMarkerElement.markerUnits api.SVGMarkerElement.markerWidth api.SVGMarkerElement.orient api.SVGMarkerElement.orientAngle api.SVGMarkerElement.orientType api.SVGMarkerElement.preserveAspectRatio api.SVGMarkerElement.refX api.SVGMarkerElement.refY api.SVGMarkerElement.setOrientToAngle api.SVGMarkerElement.setOrientToAuto api.SVGMarkerElement.viewBox api.SVGMaskElement api.SVGMaskElement.height api.SVGMaskElement.maskContentUnits api.SVGMaskElement.maskUnits api.SVGMaskElement.width api.SVGMaskElement.x api.SVGMaskElement.y api.SVGMetadataElement api.SVGNumber api.SVGNumber.value api.SVGNumberList api.SVGNumberList.appendItem api.SVGNumberList.clear api.SVGNumberList.getItem api.SVGNumberList.initialize api.SVGNumberList.insertItemBefore api.SVGNumberList.length api.SVGNumberList.numberOfItems api.SVGNumberList.removeItem api.SVGNumberList.replaceItem api.SVGPathElement api.SVGPatternElement api.SVGPatternElement.height api.SVGPatternElement.href api.SVGPatternElement.patternContentUnits api.SVGPatternElement.patternTransform api.SVGPatternElement.patternUnits api.SVGPatternElement.preserveAspectRatio api.SVGPatternElement.viewBox api.SVGPatternElement.width api.SVGPatternElement.x api.SVGPatternElement.y api.SVGPointList api.SVGPointList.appendItem api.SVGPointList.clear api.SVGPointList.getItem api.SVGPointList.initialize api.SVGPointList.insertItemBefore api.SVGPointList.length api.SVGPointList.numberOfItems api.SVGPointList.removeItem api.SVGPointList.replaceItem api.SVGPolygonElement api.SVGPolygonElement.points api.SVGPolylineElement api.SVGPolylineElement.points api.SVGPreserveAspectRatio api.SVGPreserveAspectRatio.align api.SVGPreserveAspectRatio.meetOrSlice api.SVGRadialGradientElement api.SVGRadialGradientElement.cx api.SVGRadialGradientElement.cy api.SVGRadialGradientElement.fr api.SVGRadialGradientElement.fx api.SVGRadialGradientElement.fy api.SVGRadialGradientElement.r api.SVGRect api.SVGRect.height api.SVGRect.width api.SVGRect.x api.SVGRect.y api.SVGRectElement api.SVGRectElement.height api.SVGRectElement.rx api.SVGRectElement.ry api.SVGRectElement.width api.SVGRectElement.x api.SVGRectElement.y api.SVGSVGElement api.SVGSVGElement.checkEnclosure api.SVGSVGElement.checkIntersection api.SVGSVGElement.createSVGAngle api.SVGSVGElement.createSVGLength api.SVGSVGElement.createSVGMatrix api.SVGSVGElement.createSVGNumber api.SVGSVGElement.createSVGPoint api.SVGSVGElement.createSVGRect api.SVGSVGElement.createSVGTransform api.SVGSVGElement.createSVGTransformFromMatrix api.SVGSVGElement.currentScale api.SVGSVGElement.currentTranslate api.SVGSVGElement.deselectAll api.SVGSVGElement.getCurrentTime api.SVGSVGElement.getElementById api.SVGSVGElement.getEnclosureList api.SVGSVGElement.getIntersectionList api.SVGSVGElement.height api.SVGSVGElement.preserveAspectRatio api.SVGSVGElement.setCurrentTime api.SVGSVGElement.viewBox api.SVGSVGElement.width api.SVGSVGElement.x api.SVGSVGElement.y api.SVGScriptElement api.SVGScriptElement.async api.SVGScriptElement.crossOrigin api.SVGScriptElement.defer api.SVGScriptElement.href api.SVGScriptElement.type api.SVGSetElement api.SVGStopElement api.SVGStopElement.offset api.SVGStringList api.SVGStringList.appendItem api.SVGStringList.clear api.SVGStringList.getItem api.SVGStringList.initialize api.SVGStringList.insertItemBefore api.SVGStringList.length api.SVGStringList.numberOfItems api.SVGStringList.removeItem api.SVGStringList.replaceItem api.SVGStyleElement api.SVGStyleElement.disabled api.SVGStyleElement.media api.SVGStyleElement.sheet api.SVGStyleElement.title api.SVGSwitchElement api.SVGSymbolElement api.SVGSymbolElement.preserveAspectRatio api.SVGSymbolElement.viewBox api.SVGTSpanElement api.SVGTextContentElement api.SVGTextContentElement.getCharNumAtPosition api.SVGTextContentElement.getComputedTextLength api.SVGTextContentElement.getEndPositionOfChar api.SVGTextContentElement.getExtentOfChar api.SVGTextContentElement.getNumberOfChars api.SVGTextContentElement.getRotationOfChar api.SVGTextContentElement.getStartPositionOfChar api.SVGTextContentElement.getSubStringLength api.SVGTextContentElement.lengthAdjust api.SVGTextContentElement.textLength api.SVGTextElement api.SVGTextPathElement api.SVGTextPathElement.href api.SVGTextPathElement.method api.SVGTextPathElement.spacing api.SVGTextPathElement.startOffset api.SVGTextPositioningElement api.SVGTextPositioningElement.dx api.SVGTextPositioningElement.dy api.SVGTextPositioningElement.rotate api.SVGTextPositioningElement.x api.SVGTextPositioningElement.y api.SVGTitleElement api.SVGTransform api.SVGTransform.angle api.SVGTransform.matrix api.SVGTransform.setMatrix api.SVGTransform.setRotate api.SVGTransform.setScale api.SVGTransform.setSkewX api.SVGTransform.setSkewY api.SVGTransform.setTranslate api.SVGTransform.type api.SVGTransformList api.SVGTransformList.appendItem api.SVGTransformList.clear api.SVGTransformList.consolidate api.SVGTransformList.createSVGTransformFromMatrix api.SVGTransformList.getItem api.SVGTransformList.initialize api.SVGTransformList.insertItemBefore api.SVGTransformList.length api.SVGTransformList.numberOfItems api.SVGTransformList.removeItem api.SVGTransformList.replaceItem api.SVGUnitTypes api.SVGUseElement api.SVGUseElement.height api.SVGUseElement.href api.SVGUseElement.width api.SVGUseElement.x api.SVGUseElement.y api.SVGViewElement api.SVGViewElement.preserveAspectRatio api.SVGViewElement.viewBox css.at-rules.font-face.OpenType_SVG css.properties.background-image.svg_images css.properties.background.SVG_image_as_background css.properties.clip-rule css.properties.clip-rule.evenodd css.properties.clip-rule.nonzero css.properties.color-interpolation css.properties.color-interpolation.linearGradient css.properties.color-interpolation.sRGB css.properties.cx css.properties.cy css.properties.d css.properties.fill css.properties.fill-rule css.properties.fill-rule.evenodd css.properties.fill-rule.nonzero css.properties.letter-spacing.svg_elements css.properties.marker css.properties.marker-end css.properties.marker-mid css.properties.marker-start css.properties.r css.properties.rx css.properties.ry css.properties.shape-rendering css.properties.stop-color css.properties.stop-opacity css.properties.stroke css.properties.stroke-color css.properties.stroke-dasharray css.properties.stroke-dasharray.none css.properties.stroke-dashoffset css.properties.stroke-linecap css.properties.stroke-linecap.butt css.properties.stroke-linecap.round css.properties.stroke-linecap.square css.properties.stroke-linejoin css.properties.stroke-linejoin.bevel css.properties.stroke-linejoin.miter css.properties.stroke-linejoin.round css.properties.stroke-miterlimit css.properties.stroke-width css.properties.text-anchor css.properties.text-rendering css.properties.text-rendering.auto css.properties.text-rendering.geometricPrecision css.properties.transform-origin.svg_elements css.properties.vector-effect css.properties.word-spacing.svg_elements css.properties.x css.properties.y svg.elements.a svg.elements.a.href svg.elements.a.hreflang svg.elements.a.referrerpolicy svg.elements.a.referrerpolicy.no-referrer-when-downgrade svg.elements.a.referrerpolicy.origin-when-cross-origin svg.elements.a.referrerpolicy.unsafe-url svg.elements.a.rel svg.elements.a.systemLanguage svg.elements.a.target svg.elements.a.type svg.elements.circle svg.elements.circle.cx svg.elements.circle.cy svg.elements.circle.fill svg.elements.circle.r svg.elements.circle.systemLanguage svg.elements.defs svg.elements.defs.systemLanguage svg.elements.desc svg.elements.ellipse svg.elements.ellipse.cx svg.elements.ellipse.cy svg.elements.ellipse.fill svg.elements.ellipse.rx svg.elements.ellipse.ry svg.elements.ellipse.systemLanguage svg.elements.foreignObject svg.elements.foreignObject.height svg.elements.foreignObject.systemLanguage svg.elements.foreignObject.width svg.elements.foreignObject.x svg.elements.foreignObject.y svg.elements.g svg.elements.g.systemLanguage svg.elements.image svg.elements.image.crossorigin svg.elements.image.decoding svg.elements.image.height svg.elements.image.href svg.elements.image.preserveAspectRatio svg.elements.image.systemLanguage svg.elements.image.width svg.elements.image.x svg.elements.image.y svg.elements.line svg.elements.line.systemLanguage svg.elements.line.x1 svg.elements.line.x2 svg.elements.line.y1 svg.elements.line.y2 svg.elements.linearGradient svg.elements.linearGradient.gradientTransform svg.elements.linearGradient.gradientUnits svg.elements.linearGradient.href svg.elements.linearGradient.spreadMethod svg.elements.linearGradient.x1 svg.elements.linearGradient.x2 svg.elements.linearGradient.y1 svg.elements.linearGradient.y2 svg.elements.marker svg.elements.marker.markerHeight svg.elements.marker.markerUnits svg.elements.marker.markerWidth svg.elements.marker.orient svg.elements.marker.refX svg.elements.marker.refY svg.elements.marker.viewBox svg.elements.mask svg.elements.mask.height svg.elements.mask.maskContentUnits svg.elements.mask.maskUnits svg.elements.mask.systemLanguage svg.elements.mask.width svg.elements.mask.x svg.elements.mask.y svg.elements.metadata svg.elements.mpath svg.elements.mpath.href svg.elements.path svg.elements.path.d svg.elements.path.d.path svg.elements.path.fill svg.elements.path.systemLanguage svg.elements.pattern svg.elements.pattern.height svg.elements.pattern.href svg.elements.pattern.patternContentUnits svg.elements.pattern.patternTransform svg.elements.pattern.patternUnits svg.elements.pattern.systemLanguage svg.elements.pattern.width svg.elements.pattern.x svg.elements.pattern.y svg.elements.polygon svg.elements.polygon.fill svg.elements.polygon.points svg.elements.polygon.systemLanguage svg.elements.polyline svg.elements.polyline.fill svg.elements.polyline.points svg.elements.polyline.systemLanguage svg.elements.radialGradient svg.elements.radialGradient.cx svg.elements.radialGradient.cy svg.elements.radialGradient.fr svg.elements.radialGradient.fx svg.elements.radialGradient.fy svg.elements.radialGradient.gradientTransform svg.elements.radialGradient.gradientUnits svg.elements.radialGradient.href svg.elements.radialGradient.r svg.elements.radialGradient.spreadMethod svg.elements.rect svg.elements.rect.fill svg.elements.rect.height svg.elements.rect.rx svg.elements.rect.ry svg.elements.rect.systemLanguage svg.elements.rect.width svg.elements.rect.x svg.elements.rect.y svg.elements.script svg.elements.script.async svg.elements.script.defer svg.elements.script.href svg.elements.script.type svg.elements.set svg.elements.set.fill svg.elements.set.href svg.elements.set.systemLanguage svg.elements.set.to svg.elements.stop svg.elements.stop.offset svg.elements.style svg.elements.style.media svg.elements.style.title svg.elements.style.type svg.elements.svg svg.elements.svg.height svg.elements.svg.preserveAspectRatio svg.elements.svg.systemLanguage svg.elements.svg.viewBox svg.elements.svg.width svg.elements.svg.x svg.elements.svg.y svg.elements.switch svg.elements.switch.systemLanguage svg.elements.symbol svg.elements.symbol.preserveAspectRatio svg.elements.symbol.viewBox svg.elements.text svg.elements.text.dx svg.elements.text.dy svg.elements.text.fill svg.elements.text.lengthAdjust svg.elements.text.rotate svg.elements.text.systemLanguage svg.elements.text.textLength svg.elements.text.x svg.elements.text.y svg.elements.textPath svg.elements.textPath.fill svg.elements.textPath.href svg.elements.textPath.path svg.elements.textPath.side svg.elements.textPath.spacing svg.elements.textPath.startOffset svg.elements.textPath.systemLanguage svg.elements.textPath.textLength svg.elements.title svg.elements.title.tooltip_display svg.elements.tspan svg.elements.tspan.dx svg.elements.tspan.dy svg.elements.tspan.fill svg.elements.tspan.lengthAdjust svg.elements.tspan.rotate svg.elements.tspan.systemLanguage svg.elements.tspan.textLength svg.elements.tspan.x svg.elements.tspan.y svg.elements.use svg.elements.use.data_uri svg.elements.use.external_uri svg.elements.use.height svg.elements.use.href svg.elements.use.systemLanguage svg.elements.use.width svg.elements.use.x svg.elements.use.y svg.elements.view svg.elements.view.preserveAspectRatio svg.elements.view.viewBox svg.global_attributes.alignment-baseline svg.global_attributes.baseline-shift svg.global_attributes.class svg.global_attributes.clip-rule svg.global_attributes.color svg.global_attributes.color-interpolation svg.global_attributes.color-interpolation-filters svg.global_attributes.color-interpolation.linearGradient svg.global_attributes.color-interpolation.sRGB svg.global_attributes.data_attributes svg.global_attributes.direction svg.global_attributes.display svg.global_attributes.dominant-baseline svg.global_attributes.fill-rule svg.global_attributes.id svg.global_attributes.image-rendering svg.global_attributes.lang svg.global_attributes.lighting-color svg.global_attributes.marker-end svg.global_attributes.marker-mid svg.global_attributes.marker-start svg.global_attributes.mask svg.global_attributes.overflow svg.global_attributes.pointer-events svg.global_attributes.requiredExtensions svg.global_attributes.requiredExtensions.mathml svg.global_attributes.shape-rendering svg.global_attributes.stop-color svg.global_attributes.stop-opacity svg.global_attributes.stroke svg.global_attributes.stroke-dasharray svg.global_attributes.stroke-dashoffset svg.global_attributes.stroke-linecap svg.global_attributes.stroke-linejoin svg.global_attributes.stroke-miterlimit svg.global_attributes.stroke-width svg.global_attributes.style svg.global_attributes.tabindex svg.global_attributes.text-anchor svg.global_attributes.text-decoration svg.global_attributes.text-rendering svg.global_attributes.transform svg.global_attributes.transform-origin svg.global_attributes.unicode-bidi svg.global_attributes.vector-effect svg.global_attributes.visibility
svg-discouraged	SVG 1.1 (discouraged)	The SVG 1.1 image format has several components that were excluded from SVG 2, such as fonts, alternate glyphs, and the xlink namespace.	api.SVGAElement.text api.SVGElement.className api.SVGFontElement api.SVGFontFaceElement api.SVGFontFaceFormatElement api.SVGFontFaceNameElement api.SVGFontFaceSrcElement api.SVGFontFaceUriElement api.SVGGlyphElement api.SVGGlyphRefElement api.SVGGlyphRefElement.dx api.SVGGlyphRefElement.dy api.SVGGlyphRefElement.format api.SVGGlyphRefElement.glyphRef api.SVGGlyphRefElement.href api.SVGGlyphRefElement.x api.SVGGlyphRefElement.y api.SVGHKernElement api.SVGMissingGlyphElement api.SVGPathElement.createSVGPathSegArcAbs api.SVGPathElement.createSVGPathSegArcRel api.SVGPathElement.createSVGPathSegClosePath api.SVGPathElement.createSVGPathSegCurvetoCubicAbs api.SVGPathElement.createSVGPathSegCurvetoCubicRel api.SVGPathElement.createSVGPathSegCurvetoCubicSmoothAbs api.SVGPathElement.createSVGPathSegCurvetoCubicSmoothRel api.SVGPathElement.createSVGPathSegCurvetoQuadraticAbs api.SVGPathElement.createSVGPathSegCurvetoQuadraticRel api.SVGPathElement.createSVGPathSegCurvetoQuadraticSmoothAbs api.SVGPathElement.createSVGPathSegCurvetoQuadraticSmoothRel api.SVGPathElement.createSVGPathSegLinetoAbs api.SVGPathElement.createSVGPathSegLinetoHorizontalAbs api.SVGPathElement.createSVGPathSegLinetoHorizontalRel api.SVGPathElement.createSVGPathSegLinetoRel api.SVGPathElement.createSVGPathSegLinetoVerticalAbs api.SVGPathElement.createSVGPathSegLinetoVerticalRel api.SVGPathElement.createSVGPathSegMovetoAbs api.SVGPathElement.createSVGPathSegMovetoRel api.SVGPathElement.getPathSegAtLength api.SVGPoint api.SVGPoint.matrixTransform api.SVGPoint.x api.SVGPoint.y api.SVGRenderingIntent api.SVGSVGElement.currentView api.SVGSVGElement.forceRedraw api.SVGSVGElement.suspendRedraw api.SVGSVGElement.unsuspendRedraw api.SVGSVGElement.unsuspendRedrawAll api.SVGSVGElement.useCurrentView api.SVGStyleElement.type api.SVGTextContentElement.selectSubString api.SVGVKernElement css.at-rules.font-face.SVG_fonts svg.elements.a.xlink_actuate svg.elements.a.xlink_href svg.elements.a.xlink_show svg.elements.a.xlink_title svg.elements.feImage.xlink_href svg.elements.filter.xlink_href svg.elements.font svg.elements.font-face svg.elements.font-face-format svg.elements.font-face-format.string svg.elements.font-face-name svg.elements.font-face-name.name svg.elements.font-face-src svg.elements.font-face-uri svg.elements.font-face-uri.xlink_href svg.elements.font-face.accent-height svg.elements.font-face.alphabetic svg.elements.font-face.ascent svg.elements.font-face.bbox svg.elements.font-face.cap-height svg.elements.font-face.descent svg.elements.font-face.font-family svg.elements.font-face.font-size svg.elements.font-face.font-stretch svg.elements.font-face.font-style svg.elements.font-face.font-variant svg.elements.font-face.font-weight svg.elements.font-face.hanging svg.elements.font-face.ideographic svg.elements.font-face.mathematical svg.elements.font-face.overline-position svg.elements.font-face.overline-thickness svg.elements.font-face.panose-1 svg.elements.font-face.slope svg.elements.font-face.stemh svg.elements.font-face.stemv svg.elements.font-face.strikethrough-position svg.elements.font-face.strikethrough-thickness svg.elements.font-face.underline-position svg.elements.font-face.underline-thickness svg.elements.font-face.unicode-range svg.elements.font-face.units-per-em svg.elements.font-face.v-alphabetic svg.elements.font-face.v-hanging svg.elements.font-face.v-ideographic svg.elements.font-face.v-mathematical svg.elements.font-face.widths svg.elements.font-face.x-height svg.elements.font.horiz-adv-x svg.elements.font.horiz-origin-x svg.elements.font.horiz-origin-y svg.elements.font.vert-adv-y svg.elements.font.vert-origin-x svg.elements.font.vert-origin-y svg.elements.glyph svg.elements.glyph.arabic-form svg.elements.glyph.d svg.elements.glyph.glyph-name svg.elements.glyph.horiz-adv-x svg.elements.glyph.lang svg.elements.glyph.orientation svg.elements.glyph.unicode svg.elements.glyph.vert-adv-y svg.elements.glyph.vert-origin-x svg.elements.glyph.vert-origin-y svg.elements.glyphRef svg.elements.glyphRef.dx svg.elements.glyphRef.dy svg.elements.glyphRef.format svg.elements.glyphRef.glyphRef svg.elements.glyphRef.x svg.elements.glyphRef.xlink_href svg.elements.glyphRef.y svg.elements.hkern svg.elements.hkern.g1 svg.elements.hkern.g2 svg.elements.hkern.k svg.elements.hkern.u1 svg.elements.hkern.u2 svg.elements.image.xlink_href svg.elements.linearGradient.xlink_href svg.elements.missing-glyph svg.elements.missing-glyph.d svg.elements.missing-glyph.horiz-adv-x svg.elements.missing-glyph.vert-adv-y svg.elements.missing-glyph.vert-origin-x svg.elements.missing-glyph.vert-origin-y svg.elements.mpath.xlink_href svg.elements.pattern.xlink_href svg.elements.radialGradient.xlink_href svg.elements.script.xlink_href svg.elements.svg.baseProfile svg.elements.svg.version svg.elements.svg.zoomAndPan svg.elements.textPath.xlink_href svg.elements.use.xlink_href svg.elements.view.zoomAndPan svg.elements.vkern svg.elements.vkern.g1 svg.elements.vkern.g2 svg.elements.vkern.k svg.elements.vkern.u1 svg.elements.vkern.u2 svg.global_attributes.clip svg.global_attributes.glyph-orientation-horizontal svg.global_attributes.glyph-orientation-vertical svg.global_attributes.xml_lang svg.global_attributes.xml_space
svg-filters	SVG filters	The <filter> SVG element applies custom effects such as color manipulation, blurring, or morphing to SVG elements.	api.SVGFEBlendElement api.SVGFEBlendElement.height api.SVGFEBlendElement.in1 api.SVGFEBlendElement.in2 api.SVGFEBlendElement.mode api.SVGFEBlendElement.result api.SVGFEBlendElement.width api.SVGFEBlendElement.x api.SVGFEBlendElement.y api.SVGFEColorMatrixElement api.SVGFEColorMatrixElement.height api.SVGFEColorMatrixElement.in1 api.SVGFEColorMatrixElement.result api.SVGFEColorMatrixElement.type api.SVGFEColorMatrixElement.values api.SVGFEColorMatrixElement.width api.SVGFEColorMatrixElement.x api.SVGFEColorMatrixElement.y api.SVGFEComponentTransferElement api.SVGFEComponentTransferElement.height api.SVGFEComponentTransferElement.in1 api.SVGFEComponentTransferElement.result api.SVGFEComponentTransferElement.width api.SVGFEComponentTransferElement.x api.SVGFEComponentTransferElement.y api.SVGFECompositeElement api.SVGFECompositeElement.height api.SVGFECompositeElement.in1 api.SVGFECompositeElement.in2 api.SVGFECompositeElement.k1 api.SVGFECompositeElement.k2 api.SVGFECompositeElement.k3 api.SVGFECompositeElement.k4 api.SVGFECompositeElement.operator api.SVGFECompositeElement.result api.SVGFECompositeElement.width api.SVGFECompositeElement.x api.SVGFECompositeElement.y api.SVGFEConvolveMatrixElement api.SVGFEConvolveMatrixElement.bias api.SVGFEConvolveMatrixElement.divisor api.SVGFEConvolveMatrixElement.edgeMode api.SVGFEConvolveMatrixElement.height api.SVGFEConvolveMatrixElement.in1 api.SVGFEConvolveMatrixElement.kernelMatrix api.SVGFEConvolveMatrixElement.kernelUnitLengthX api.SVGFEConvolveMatrixElement.kernelUnitLengthY api.SVGFEConvolveMatrixElement.orderX api.SVGFEConvolveMatrixElement.orderY api.SVGFEConvolveMatrixElement.preserveAlpha api.SVGFEConvolveMatrixElement.result api.SVGFEConvolveMatrixElement.targetX api.SVGFEConvolveMatrixElement.targetY api.SVGFEConvolveMatrixElement.width api.SVGFEConvolveMatrixElement.x api.SVGFEConvolveMatrixElement.y api.SVGFEDiffuseLightingElement api.SVGFEDiffuseLightingElement.diffuseConstant api.SVGFEDiffuseLightingElement.height api.SVGFEDiffuseLightingElement.in1 api.SVGFEDiffuseLightingElement.kernelUnitLengthX api.SVGFEDiffuseLightingElement.kernelUnitLengthY api.SVGFEDiffuseLightingElement.result api.SVGFEDiffuseLightingElement.surfaceScale api.SVGFEDiffuseLightingElement.width api.SVGFEDiffuseLightingElement.x api.SVGFEDiffuseLightingElement.y api.SVGFEDisplacementMapElement api.SVGFEDisplacementMapElement.height api.SVGFEDisplacementMapElement.in1 api.SVGFEDisplacementMapElement.in2 api.SVGFEDisplacementMapElement.result api.SVGFEDisplacementMapElement.scale api.SVGFEDisplacementMapElement.width api.SVGFEDisplacementMapElement.x api.SVGFEDisplacementMapElement.xChannelSelector api.SVGFEDisplacementMapElement.y api.SVGFEDisplacementMapElement.yChannelSelector api.SVGFEDistantLightElement api.SVGFEDistantLightElement.azimuth api.SVGFEDistantLightElement.elevation api.SVGFEDropShadowElement api.SVGFEDropShadowElement.dx api.SVGFEDropShadowElement.dy api.SVGFEDropShadowElement.height api.SVGFEDropShadowElement.in1 api.SVGFEDropShadowElement.result api.SVGFEDropShadowElement.setStdDeviation api.SVGFEDropShadowElement.stdDeviationX api.SVGFEDropShadowElement.stdDeviationY api.SVGFEDropShadowElement.width api.SVGFEDropShadowElement.x api.SVGFEDropShadowElement.y api.SVGFEFloodElement api.SVGFEFloodElement.height api.SVGFEFloodElement.result api.SVGFEFloodElement.width api.SVGFEFloodElement.x api.SVGFEFloodElement.y api.SVGFEFuncAElement api.SVGFEFuncBElement api.SVGFEFuncGElement api.SVGFEFuncRElement api.SVGFEGaussianBlurElement api.SVGFEGaussianBlurElement.edgeMode api.SVGFEGaussianBlurElement.height api.SVGFEGaussianBlurElement.in1 api.SVGFEGaussianBlurElement.result api.SVGFEGaussianBlurElement.setStdDeviation api.SVGFEGaussianBlurElement.stdDeviationX api.SVGFEGaussianBlurElement.stdDeviationY api.SVGFEGaussianBlurElement.width api.SVGFEGaussianBlurElement.x api.SVGFEGaussianBlurElement.y api.SVGFEImageElement api.SVGFEImageElement.crossOrigin api.SVGFEImageElement.height api.SVGFEImageElement.href api.SVGFEImageElement.preserveAspectRatio api.SVGFEImageElement.result api.SVGFEImageElement.width api.SVGFEImageElement.x api.SVGFEImageElement.y api.SVGFEMergeElement api.SVGFEMergeElement.height api.SVGFEMergeElement.result api.SVGFEMergeElement.width api.SVGFEMergeElement.x api.SVGFEMergeElement.y api.SVGFEMergeNodeElement api.SVGFEMergeNodeElement.in1 api.SVGFEMorphologyElement api.SVGFEMorphologyElement.height api.SVGFEMorphologyElement.in1 api.SVGFEMorphologyElement.operator api.SVGFEMorphologyElement.radiusX api.SVGFEMorphologyElement.radiusY api.SVGFEMorphologyElement.result api.SVGFEMorphologyElement.width api.SVGFEMorphologyElement.x api.SVGFEMorphologyElement.y api.SVGFEOffsetElement api.SVGFEOffsetElement.dx api.SVGFEOffsetElement.dy api.SVGFEOffsetElement.height api.SVGFEOffsetElement.in1 api.SVGFEOffsetElement.result api.SVGFEOffsetElement.width api.SVGFEOffsetElement.x api.SVGFEOffsetElement.y api.SVGFEPointLightElement api.SVGFEPointLightElement.x api.SVGFEPointLightElement.y api.SVGFEPointLightElement.z api.SVGFESpecularLightingElement api.SVGFESpecularLightingElement.height api.SVGFESpecularLightingElement.in1 api.SVGFESpecularLightingElement.kernelUnitLengthX api.SVGFESpecularLightingElement.kernelUnitLengthY api.SVGFESpecularLightingElement.result api.SVGFESpecularLightingElement.specularConstant api.SVGFESpecularLightingElement.specularExponent api.SVGFESpecularLightingElement.surfaceScale api.SVGFESpecularLightingElement.width api.SVGFESpecularLightingElement.x api.SVGFESpecularLightingElement.y api.SVGFESpotLightElement api.SVGFESpotLightElement.limitingConeAngle api.SVGFESpotLightElement.pointsAtX api.SVGFESpotLightElement.pointsAtY api.SVGFESpotLightElement.pointsAtZ api.SVGFESpotLightElement.specularExponent api.SVGFESpotLightElement.x api.SVGFESpotLightElement.y api.SVGFESpotLightElement.z api.SVGFETileElement api.SVGFETileElement.height api.SVGFETileElement.in1 api.SVGFETileElement.result api.SVGFETileElement.width api.SVGFETileElement.x api.SVGFETileElement.y api.SVGFETurbulenceElement api.SVGFETurbulenceElement.baseFrequencyX api.SVGFETurbulenceElement.baseFrequencyY api.SVGFETurbulenceElement.height api.SVGFETurbulenceElement.numOctaves api.SVGFETurbulenceElement.result api.SVGFETurbulenceElement.seed api.SVGFETurbulenceElement.stitchTiles api.SVGFETurbulenceElement.type api.SVGFETurbulenceElement.width api.SVGFETurbulenceElement.x api.SVGFETurbulenceElement.y api.SVGFilterElement api.SVGFilterElement.filterUnits api.SVGFilterElement.height api.SVGFilterElement.href api.SVGFilterElement.primitiveUnits api.SVGFilterElement.width api.SVGFilterElement.x api.SVGFilterElement.y css.properties.color-interpolation-filters css.properties.color-interpolation-filters.auto css.properties.color-interpolation-filters.linearRGB css.properties.color-interpolation-filters.sRGB css.properties.filter.svg_elements css.properties.flood-color css.properties.flood-opacity css.properties.lighting-color svg.elements.feBlend svg.elements.feBlend.in svg.elements.feBlend.in2 svg.elements.feBlend.mode svg.elements.feColorMatrix svg.elements.feColorMatrix.in svg.elements.feColorMatrix.type svg.elements.feColorMatrix.values svg.elements.feComponentTransfer svg.elements.feComponentTransfer.in svg.elements.feComposite svg.elements.feComposite.in svg.elements.feComposite.in2 svg.elements.feComposite.k1 svg.elements.feComposite.k2 svg.elements.feComposite.k3 svg.elements.feComposite.k4 svg.elements.feComposite.operator svg.elements.feComposite.operator.lighter_value svg.elements.feConvolveMatrix svg.elements.feConvolveMatrix.bias svg.elements.feConvolveMatrix.divisor svg.elements.feConvolveMatrix.edgeMode svg.elements.feConvolveMatrix.in svg.elements.feConvolveMatrix.kernelMatrix svg.elements.feConvolveMatrix.kernelUnitLength svg.elements.feConvolveMatrix.order svg.elements.feConvolveMatrix.preserveAlpha svg.elements.feConvolveMatrix.targetX svg.elements.feConvolveMatrix.targetY svg.elements.feDiffuseLighting svg.elements.feDiffuseLighting.diffuseConstant svg.elements.feDiffuseLighting.in svg.elements.feDiffuseLighting.kernelUnitLength svg.elements.feDiffuseLighting.surfaceScale svg.elements.feDisplacementMap svg.elements.feDisplacementMap.in svg.elements.feDisplacementMap.in2 svg.elements.feDisplacementMap.scale svg.elements.feDisplacementMap.xChannelSelector svg.elements.feDisplacementMap.yChannelSelector svg.elements.feDistantLight svg.elements.feDistantLight.azimuth svg.elements.feDistantLight.elevation svg.elements.feDropShadow svg.elements.feDropShadow.dx svg.elements.feDropShadow.dy svg.elements.feDropShadow.in svg.elements.feDropShadow.stdDeviation svg.elements.feFlood svg.elements.feFuncA svg.elements.feFuncB svg.elements.feFuncG svg.elements.feFuncR svg.elements.feGaussianBlur svg.elements.feGaussianBlur.edgeMode svg.elements.feGaussianBlur.in svg.elements.feGaussianBlur.stdDeviation svg.elements.feImage svg.elements.feImage.crossorigin svg.elements.feImage.href svg.elements.feImage.preserveAspectRatio svg.elements.feMerge svg.elements.feMergeNode svg.elements.feMergeNode.in svg.elements.feMorphology svg.elements.feMorphology.in svg.elements.feMorphology.operator svg.elements.feMorphology.radius svg.elements.feOffset svg.elements.feOffset.dx svg.elements.feOffset.dy svg.elements.feOffset.in svg.elements.fePointLight svg.elements.fePointLight.x svg.elements.fePointLight.y svg.elements.fePointLight.z svg.elements.feSpecularLighting svg.elements.feSpecularLighting.in svg.elements.feSpecularLighting.kernelUnitLength svg.elements.feSpecularLighting.specularConstant svg.elements.feSpecularLighting.specularExponent svg.elements.feSpecularLighting.surfaceScale svg.elements.feSpotLight svg.elements.feSpotLight.limitingConeAngle svg.elements.feSpotLight.pointsAtX svg.elements.feSpotLight.pointsAtY svg.elements.feSpotLight.pointsAtZ svg.elements.feSpotLight.specularExponent svg.elements.feSpotLight.x svg.elements.feSpotLight.y svg.elements.feSpotLight.z svg.elements.feTile svg.elements.feTile.in svg.elements.feTurbulence svg.elements.feTurbulence.baseFrequency svg.elements.feTurbulence.numOctaves svg.elements.feTurbulence.seed svg.elements.feTurbulence.stitchTiles svg.elements.feTurbulence.type svg.elements.filter svg.elements.filter.filterUnits svg.elements.filter.height svg.elements.filter.primitiveUnits svg.elements.filter.width svg.elements.filter.x svg.elements.filter.y svg.global_attributes.filter svg.global_attributes.flood-color svg.global_attributes.flood-opacity
symbol	Symbol	A Symbol value is a unique, non-enumerable primitive value used for encapsulation or information hiding. For example, a symbol can be a key of an object that can never collide with any other key.	javascript.builtins.Symbol javascript.builtins.Symbol.@@toPrimitive javascript.builtins.Symbol.Symbol javascript.builtins.Symbol.description javascript.builtins.Symbol.for javascript.builtins.Symbol.hasInstance javascript.builtins.Symbol.isConcatSpreadable javascript.builtins.Symbol.iterator javascript.builtins.Symbol.keyFor javascript.builtins.Symbol.match javascript.builtins.Symbol.matchAll javascript.builtins.Symbol.replace javascript.builtins.Symbol.search javascript.builtins.Symbol.species javascript.builtins.Symbol.split javascript.builtins.Symbol.toPrimitive javascript.builtins.Symbol.toString javascript.builtins.Symbol.toStringTag javascript.builtins.Symbol.toStringTag.dom_objects javascript.builtins.Symbol.valueOf
system-color	System colors	The system color CSS keywords, such as ButtonBorder or LinkText, allow you to match default colors from the user agent.	css.types.color.system-color css.types.color.system-color.accentcolor_accentcolortext css.types.color.system-color.mark_marktext_buttonborder
tab-size	tab-size	The tab-size CSS property sets the width of the tab character.	css.properties.tab-size css.properties.tab-size.length
tabindex	tabindex	The tabindex HTML attribute make an element focusable, and sets the element's relative ordering for sequential focus navigation.	api.HTMLElement.tabIndex html.global_attributes.tabindex
table	Tables	The <table> HTML element, with several related elements, represents tabular data in rows and columns of cells.	api.HTMLTableCaptionElement api.HTMLTableCellElement api.HTMLTableCellElement.abbr api.HTMLTableCellElement.cellIndex api.HTMLTableCellElement.colSpan api.HTMLTableCellElement.headers api.HTMLTableCellElement.rowSpan api.HTMLTableCellElement.scope api.HTMLTableColElement api.HTMLTableColElement.span api.HTMLTableElement api.HTMLTableElement.caption api.HTMLTableElement.createCaption api.HTMLTableElement.createTBody api.HTMLTableElement.createTFoot api.HTMLTableElement.createTHead api.HTMLTableElement.deleteCaption api.HTMLTableElement.deleteRow api.HTMLTableElement.deleteTFoot api.HTMLTableElement.deleteTHead api.HTMLTableElement.insertRow api.HTMLTableElement.rows api.HTMLTableElement.tBodies api.HTMLTableElement.tFoot api.HTMLTableElement.tHead api.HTMLTableRowElement api.HTMLTableRowElement.cells api.HTMLTableRowElement.deleteCell api.HTMLTableRowElement.insertCell api.HTMLTableRowElement.insertCell.index_parameter_negative_one api.HTMLTableRowElement.insertCell.index_parameter_optional api.HTMLTableRowElement.rowIndex api.HTMLTableRowElement.sectionRowIndex api.HTMLTableSectionElement api.HTMLTableSectionElement.deleteRow api.HTMLTableSectionElement.insertRow api.HTMLTableSectionElement.rows css.properties.border-collapse css.properties.border-collapse.collapse css.properties.border-collapse.separate css.properties.border-spacing css.properties.caption-side css.properties.caption-side.bottom css.properties.caption-side.bottom-outside css.properties.caption-side.top css.properties.caption-side.top-outside css.properties.caption-side.writing-mode_relative_values css.properties.empty-cells css.properties.table-layout html.elements.caption html.elements.col html.elements.col.span html.elements.colgroup html.elements.colgroup.span html.elements.table html.elements.tbody html.elements.td html.elements.td.colspan html.elements.td.headers html.elements.td.rowspan html.elements.td.rowspan.rowspan_zero html.elements.tfoot html.elements.th html.elements.th.abbr html.elements.th.colspan html.elements.th.headers html.elements.th.rowspan html.elements.th.rowspan.rowspan_zero html.elements.th.scope html.elements.thead html.elements.tr
target	:target	The :target CSS pseudo-class matches the element with an ID matching the URL fragment.	css.selectors.target
target-text	::target-text	The ::target-text pseudo-element allows you to style text highlighted by a URL text fragment such as #:~:text=snippet.	css.selectors.target-text
target-within	:target-within	The :target-within CSS pseudo-class matches the element with an ID matching the URL fragment and its ancestors.
template	<template>	The <template> HTML element holds HTML fragments which you can clone and insert into the document using JavaScript.	api.HTMLTemplateElement api.HTMLTemplateElement.content html.elements.template
template-literals	Template literals	Template literals are literals delimited with backtick (`) characters, allowing for multi-line strings, string interpolation with embedded expressions, and special constructs called tagged templates.	javascript.grammar.template_literals javascript.grammar.template_literals.template_literal_revision
temporal	Temporal	The Temporal API allows you to work with dates, times, time zones, and durations. It is more powerful than the Date API.	javascript.builtins.Temporal javascript.builtins.Temporal.Duration javascript.builtins.Temporal.Duration.Duration javascript.builtins.Temporal.Duration.abs javascript.builtins.Temporal.Duration.add javascript.builtins.Temporal.Duration.blank javascript.builtins.Temporal.Duration.compare javascript.builtins.Temporal.Duration.days javascript.builtins.Temporal.Duration.from javascript.builtins.Temporal.Duration.hours javascript.builtins.Temporal.Duration.microseconds javascript.builtins.Temporal.Duration.milliseconds javascript.builtins.Temporal.Duration.minutes javascript.builtins.Temporal.Duration.months javascript.builtins.Temporal.Duration.nanoseconds javascript.builtins.Temporal.Duration.negated javascript.builtins.Temporal.Duration.round javascript.builtins.Temporal.Duration.seconds javascript.builtins.Temporal.Duration.sign javascript.builtins.Temporal.Duration.subtract javascript.builtins.Temporal.Duration.toJSON javascript.builtins.Temporal.Duration.toLocaleString javascript.builtins.Temporal.Duration.toString javascript.builtins.Temporal.Duration.total javascript.builtins.Temporal.Duration.valueOf javascript.builtins.Temporal.Duration.weeks javascript.builtins.Temporal.Duration.with javascript.builtins.Temporal.Duration.years javascript.builtins.Temporal.Instant javascript.builtins.Temporal.Instant.Instant javascript.builtins.Temporal.Instant.add javascript.builtins.Temporal.Instant.compare javascript.builtins.Temporal.Instant.epochMilliseconds javascript.builtins.Temporal.Instant.epochNanoseconds javascript.builtins.Temporal.Instant.equals javascript.builtins.Temporal.Instant.from javascript.builtins.Temporal.Instant.fromEpochMilliseconds javascript.builtins.Temporal.Instant.fromEpochNanoseconds javascript.builtins.Temporal.Instant.round javascript.builtins.Temporal.Instant.since javascript.builtins.Temporal.Instant.subtract javascript.builtins.Temporal.Instant.toJSON javascript.builtins.Temporal.Instant.toLocaleString javascript.builtins.Temporal.Instant.toString javascript.builtins.Temporal.Instant.toZonedDateTimeISO javascript.builtins.Temporal.Instant.until javascript.builtins.Temporal.Instant.valueOf javascript.builtins.Temporal.Now javascript.builtins.Temporal.Now.instant javascript.builtins.Temporal.Now.plainDateISO javascript.builtins.Temporal.Now.plainDateTimeISO javascript.builtins.Temporal.Now.plainTimeISO javascript.builtins.Temporal.Now.timeZoneID javascript.builtins.Temporal.Now.zonedDateTimeISO javascript.builtins.Temporal.PlainDate javascript.builtins.Temporal.PlainDate.PlainDate javascript.builtins.Temporal.PlainDate.add javascript.builtins.Temporal.PlainDate.calendarId javascript.builtins.Temporal.PlainDate.compare javascript.builtins.Temporal.PlainDate.day javascript.builtins.Temporal.PlainDate.dayOfWeek javascript.builtins.Temporal.PlainDate.dayOfYear javascript.builtins.Temporal.PlainDate.daysInMonth javascript.builtins.Temporal.PlainDate.daysInWeek javascript.builtins.Temporal.PlainDate.daysInYear javascript.builtins.Temporal.PlainDate.equals javascript.builtins.Temporal.PlainDate.era javascript.builtins.Temporal.PlainDate.eraYear javascript.builtins.Temporal.PlainDate.from javascript.builtins.Temporal.PlainDate.inLeapYear javascript.builtins.Temporal.PlainDate.month javascript.builtins.Temporal.PlainDate.monthCode javascript.builtins.Temporal.PlainDate.monthsInYear javascript.builtins.Temporal.PlainDate.since javascript.builtins.Temporal.PlainDate.subtract javascript.builtins.Temporal.PlainDate.toJSON javascript.builtins.Temporal.PlainDate.toLocaleString javascript.builtins.Temporal.PlainDate.toPlainDateTime javascript.builtins.Temporal.PlainDate.toPlainMonthDay javascript.builtins.Temporal.PlainDate.toPlainYearMonth javascript.builtins.Temporal.PlainDate.toString javascript.builtins.Temporal.PlainDate.toZonedDateTime javascript.builtins.Temporal.PlainDate.until javascript.builtins.Temporal.PlainDate.valueOf javascript.builtins.Temporal.PlainDate.weekOfYear javascript.builtins.Temporal.PlainDate.with javascript.builtins.Temporal.PlainDate.withCalendar javascript.builtins.Temporal.PlainDate.year javascript.builtins.Temporal.PlainDate.yearOfWeek javascript.builtins.Temporal.PlainDateTime javascript.builtins.Temporal.PlainDateTime.PlainDateTime javascript.builtins.Temporal.PlainDateTime.add javascript.builtins.Temporal.PlainDateTime.calendarId javascript.builtins.Temporal.PlainDateTime.compare javascript.builtins.Temporal.PlainDateTime.day javascript.builtins.Temporal.PlainDateTime.dayOfWeek javascript.builtins.Temporal.PlainDateTime.dayOfYear javascript.builtins.Temporal.PlainDateTime.daysInMonth javascript.builtins.Temporal.PlainDateTime.daysInWeek javascript.builtins.Temporal.PlainDateTime.daysInYear javascript.builtins.Temporal.PlainDateTime.equals javascript.builtins.Temporal.PlainDateTime.era javascript.builtins.Temporal.PlainDateTime.eraYear javascript.builtins.Temporal.PlainDateTime.from javascript.builtins.Temporal.PlainDateTime.hour javascript.builtins.Temporal.PlainDateTime.inLeapYear javascript.builtins.Temporal.PlainDateTime.microsecond javascript.builtins.Temporal.PlainDateTime.millisecond javascript.builtins.Temporal.PlainDateTime.minute javascript.builtins.Temporal.PlainDateTime.month javascript.builtins.Temporal.PlainDateTime.monthCode javascript.builtins.Temporal.PlainDateTime.monthsInYear javascript.builtins.Temporal.PlainDateTime.nanosecond javascript.builtins.Temporal.PlainDateTime.round javascript.builtins.Temporal.PlainDateTime.second javascript.builtins.Temporal.PlainDateTime.since javascript.builtins.Temporal.PlainDateTime.subtract javascript.builtins.Temporal.PlainDateTime.toJSON javascript.builtins.Temporal.PlainDateTime.toLocaleString javascript.builtins.Temporal.PlainDateTime.toPlainDate javascript.builtins.Temporal.PlainDateTime.toPlainTime javascript.builtins.Temporal.PlainDateTime.toString javascript.builtins.Temporal.PlainDateTime.toZonedDateTime javascript.builtins.Temporal.PlainDateTime.until javascript.builtins.Temporal.PlainDateTime.valueOf javascript.builtins.Temporal.PlainDateTime.weekOfYear javascript.builtins.Temporal.PlainDateTime.with javascript.builtins.Temporal.PlainDateTime.withCalendar javascript.builtins.Temporal.PlainDateTime.withPlainTime javascript.builtins.Temporal.PlainDateTime.year javascript.builtins.Temporal.PlainDateTime.yearOfWeek javascript.builtins.Temporal.PlainMonthDay javascript.builtins.Temporal.PlainMonthDay.PlainMonthDay javascript.builtins.Temporal.PlainMonthDay.calendarId javascript.builtins.Temporal.PlainMonthDay.day javascript.builtins.Temporal.PlainMonthDay.equals javascript.builtins.Temporal.PlainMonthDay.from javascript.builtins.Temporal.PlainMonthDay.monthCode javascript.builtins.Temporal.PlainMonthDay.toJSON javascript.builtins.Temporal.PlainMonthDay.toLocaleString javascript.builtins.Temporal.PlainMonthDay.toPlainDate javascript.builtins.Temporal.PlainMonthDay.toString javascript.builtins.Temporal.PlainMonthDay.valueOf javascript.builtins.Temporal.PlainMonthDay.with javascript.builtins.Temporal.PlainTime javascript.builtins.Temporal.PlainTime.PlainTime javascript.builtins.Temporal.PlainTime.add javascript.builtins.Temporal.PlainTime.compare javascript.builtins.Temporal.PlainTime.equals javascript.builtins.Temporal.PlainTime.from javascript.builtins.Temporal.PlainTime.hour javascript.builtins.Temporal.PlainTime.microsecond javascript.builtins.Temporal.PlainTime.millisecond javascript.builtins.Temporal.PlainTime.minute javascript.builtins.Temporal.PlainTime.nanosecond javascript.builtins.Temporal.PlainTime.round javascript.builtins.Temporal.PlainTime.second javascript.builtins.Temporal.PlainTime.since javascript.builtins.Temporal.PlainTime.subtract javascript.builtins.Temporal.PlainTime.toJSON javascript.builtins.Temporal.PlainTime.toLocaleString javascript.builtins.Temporal.PlainTime.toString javascript.builtins.Temporal.PlainTime.until javascript.builtins.Temporal.PlainTime.valueOf javascript.builtins.Temporal.PlainTime.with javascript.builtins.Temporal.PlainYearMonth javascript.builtins.Temporal.PlainYearMonth.PlainYearMonth javascript.builtins.Temporal.PlainYearMonth.add javascript.builtins.Temporal.PlainYearMonth.calendarId javascript.builtins.Temporal.PlainYearMonth.compare javascript.builtins.Temporal.PlainYearMonth.daysInMonth javascript.builtins.Temporal.PlainYearMonth.daysInYear javascript.builtins.Temporal.PlainYearMonth.equals javascript.builtins.Temporal.PlainYearMonth.era javascript.builtins.Temporal.PlainYearMonth.eraYear javascript.builtins.Temporal.PlainYearMonth.from javascript.builtins.Temporal.PlainYearMonth.inLeapYear javascript.builtins.Temporal.PlainYearMonth.month javascript.builtins.Temporal.PlainYearMonth.monthCode javascript.builtins.Temporal.PlainYearMonth.monthsInYear javascript.builtins.Temporal.PlainYearMonth.since javascript.builtins.Temporal.PlainYearMonth.subtract javascript.builtins.Temporal.PlainYearMonth.toJSON javascript.builtins.Temporal.PlainYearMonth.toLocaleString javascript.builtins.Temporal.PlainYearMonth.toPlainDate javascript.builtins.Temporal.PlainYearMonth.toString javascript.builtins.Temporal.PlainYearMonth.until javascript.builtins.Temporal.PlainYearMonth.valueOf javascript.builtins.Temporal.PlainYearMonth.with javascript.builtins.Temporal.PlainYearMonth.year javascript.builtins.Temporal.ZonedDateTime javascript.builtins.Temporal.ZonedDateTime.ZonedDateTime javascript.builtins.Temporal.ZonedDateTime.add javascript.builtins.Temporal.ZonedDateTime.calendarId javascript.builtins.Temporal.ZonedDateTime.compare javascript.builtins.Temporal.ZonedDateTime.day javascript.builtins.Temporal.ZonedDateTime.dayOfWeek javascript.builtins.Temporal.ZonedDateTime.dayOfYear javascript.builtins.Temporal.ZonedDateTime.daysInMonth javascript.builtins.Temporal.ZonedDateTime.daysInWeek javascript.builtins.Temporal.ZonedDateTime.daysInYear javascript.builtins.Temporal.ZonedDateTime.epochMilliseconds javascript.builtins.Temporal.ZonedDateTime.epochNanoseconds javascript.builtins.Temporal.ZonedDateTime.equals javascript.builtins.Temporal.ZonedDateTime.era javascript.builtins.Temporal.ZonedDateTime.eraYear javascript.builtins.Temporal.ZonedDateTime.from javascript.builtins.Temporal.ZonedDateTime.getTimeZoneTransition javascript.builtins.Temporal.ZonedDateTime.hour javascript.builtins.Temporal.ZonedDateTime.hoursInDay javascript.builtins.Temporal.ZonedDateTime.inLeapYear javascript.builtins.Temporal.ZonedDateTime.microsecond javascript.builtins.Temporal.ZonedDateTime.millisecond javascript.builtins.Temporal.ZonedDateTime.minute javascript.builtins.Temporal.ZonedDateTime.month javascript.builtins.Temporal.ZonedDateTime.monthCode javascript.builtins.Temporal.ZonedDateTime.monthsInYear javascript.builtins.Temporal.ZonedDateTime.nanosecond javascript.builtins.Temporal.ZonedDateTime.offset javascript.builtins.Temporal.ZonedDateTime.offsetNanoseconds javascript.builtins.Temporal.ZonedDateTime.round javascript.builtins.Temporal.ZonedDateTime.second javascript.builtins.Temporal.ZonedDateTime.since javascript.builtins.Temporal.ZonedDateTime.startOfDay javascript.builtins.Temporal.ZonedDateTime.subtract javascript.builtins.Temporal.ZonedDateTime.timeZoneId javascript.builtins.Temporal.ZonedDateTime.toInstant javascript.builtins.Temporal.ZonedDateTime.toJSON javascript.builtins.Temporal.ZonedDateTime.toLocaleString javascript.builtins.Temporal.ZonedDateTime.toPlainDate javascript.builtins.Temporal.ZonedDateTime.toPlainDateTime javascript.builtins.Temporal.ZonedDateTime.toPlainTime javascript.builtins.Temporal.ZonedDateTime.toString javascript.builtins.Temporal.ZonedDateTime.until javascript.builtins.Temporal.ZonedDateTime.valueOf javascript.builtins.Temporal.ZonedDateTime.weekOfYear javascript.builtins.Temporal.ZonedDateTime.with javascript.builtins.Temporal.ZonedDateTime.withCalendar javascript.builtins.Temporal.ZonedDateTime.withPlainTime javascript.builtins.Temporal.ZonedDateTime.withTimeZone javascript.builtins.Temporal.ZonedDateTime.year javascript.builtins.Temporal.ZonedDateTime.yearOfWeek
text-align	text-align	The text-align CSS property sets the horizontal placement of the inner content of a block element.	css.properties.text-align css.properties.text-align.center css.properties.text-align.end css.properties.text-align.justify css.properties.text-align.left css.properties.text-align.match-parent css.properties.text-align.right css.properties.text-align.start
text-align-last	text-align-last	The text-align-last CSS property sets the alignment of the last line of text before a forced line break.	css.properties.text-align-last css.properties.text-align-last.auto
text-box	text-box	The text-box CSS property sets the spacing above and below text based on a font's typographic features. For example, text-box: trim-both ex alphabetic trims the top to the top of the letter x and the bottom to the bottom of most letters, without descenders.	css.properties.text-box css.properties.text-box-edge css.properties.text-box-edge.auto css.properties.text-box-trim css.properties.text-box-trim.none css.properties.text-box-trim.trim-both css.properties.text-box-trim.trim-end css.properties.text-box-trim.trim-start css.properties.text-box.normal
text-combine-upright	text-combine-upright	The text-combine-upright CSS property displays multiple characters in the space of a single character in vertical text. This is used in East Asian documents to display Latin-based strings such as components of a date or letters of an initialism.	css.properties.text-combine-upright
text-decoration	text-decoration	The text-decoration CSS property sets the style and color of decorative lines including underline, overline, line-through, or a combination of lines.	css.properties.text-decoration css.properties.text-decoration-color css.properties.text-decoration-line css.properties.text-decoration-line.grammar-error css.properties.text-decoration-line.line-through css.properties.text-decoration-line.none css.properties.text-decoration-line.overline css.properties.text-decoration-line.spelling-error css.properties.text-decoration-line.underline css.properties.text-decoration-skip css.properties.text-decoration-skip-ink css.properties.text-decoration-skip-ink.all css.properties.text-decoration-skip-ink.auto css.properties.text-decoration-skip-ink.none css.properties.text-decoration-skip.auto css.properties.text-decoration-skip.none css.properties.text-decoration-style css.properties.text-decoration-style.wavy css.properties.text-decoration-thickness css.properties.text-decoration-thickness.auto css.properties.text-decoration-thickness.from-font css.properties.text-decoration-thickness.percentage css.properties.text-decoration.includes_color-and-style css.properties.text-decoration.includes_thickness
text-decoration-line-blink	`text-decoration-line: blink`	The text-decoration: blink CSS declaration flashes text between visible and invisible.	css.properties.text-decoration-line.blink
text-decoration-selection	text-decoration in ::selection	The text-decoration CSS property in a ::selection rule sets the underline and other text decoration styles on the text a user has highlighted.	css.selectors.selection.text-decoration
text-emphasis	text-emphasis	The text-emphasis CSS property sets position and style for text emphasis marks, especially for East Asian languages.	css.properties.text-emphasis css.properties.text-emphasis-color css.properties.text-emphasis-position css.properties.text-emphasis-position.auto css.properties.text-emphasis-position.left css.properties.text-emphasis-position.over css.properties.text-emphasis-position.right css.properties.text-emphasis-position.under css.properties.text-emphasis-style css.properties.text-emphasis-style.circle css.properties.text-emphasis-style.dot css.properties.text-emphasis-style.double-circle css.properties.text-emphasis-style.filled css.properties.text-emphasis-style.none css.properties.text-emphasis-style.sesame css.properties.text-emphasis-style.triangle
text-encoding	Text encoding and decoding	The TextEncoder API transforms a stream of code points into a byte stream with UTF-8 encoding, and TextDecoder does the reverse.	api.TextDecoder api.TextDecoder.TextDecoder api.TextDecoder.decode api.TextDecoder.encoding api.TextDecoder.fatal api.TextDecoder.ignoreBOM api.TextDecoder.worker_support api.TextDecoderStream api.TextDecoderStream.TextDecoderStream api.TextDecoderStream.encoding api.TextDecoderStream.fatal api.TextDecoderStream.ignoreBOM api.TextEncoder api.TextEncoder.TextEncoder api.TextEncoder.encode api.TextEncoder.encodeInto api.TextEncoder.encoding api.TextEncoder.worker_support api.TextEncoderStream api.TextEncoderStream.TextEncoderStream api.TextEncoderStream.encoding
text-indent	text-indent	The text-indent CSS property sets the size of the empty space (indentation) at the beginning of lines in a text.	css.properties.text-indent
text-indent-each-line	text-indent: each-line	The text-indent: each-line CSS declaration indents text after forced breaks as well as to the first line of a block.	css.properties.text-indent.each-line
text-indent-hanging	text-indent: hanging	The text-indent: hanging CSS declaration indents all lines except the first.	css.properties.text-indent.hanging
text-justify	text-justify	The text-justify CSS property sets the justification method of text when text-align: justify is set.	css.properties.text-justify css.properties.text-justify.auto css.properties.text-justify.inter-character css.properties.text-justify.inter-word css.properties.text-justify.none
text-orientation	text-orientation	The text-orientation CSS property sets the how text is typeset within a line when the writing mode is vertical.	css.properties.text-orientation css.properties.text-orientation.mixed css.properties.text-orientation.sideways css.properties.text-orientation.upright
text-overflow	Text overflow	The text-overflow CSS property sets how hidden overflow content appears to users. The property can clip content, truncate content with an ellipsis (…), or truncate with a custom string.	css.properties.text-overflow css.properties.text-overflow.clip css.properties.text-overflow.ellipsis css.properties.text-overflow.two_value_syntax svg.global_attributes.text-overflow
text-shadow	text-shadow	The text-shadow CSS property sets the position and styles of shadow on text.	css.properties.text-shadow
text-size-adjust	text-size-adjust	The text-size-adjust CSS property disables or modifies the browser's default text size adjustment for small screen sizes.	css.properties.text-size-adjust css.properties.text-size-adjust.auto css.properties.text-size-adjust.none css.properties.text-size-adjust.percentages
text-spacing-trim	text-spacing-trim	The text-spacing-trim CSS property controls spacing around CJK characters, avoiding excessive whitespace when using full-width punctuation characters.	css.properties.text-spacing-trim css.properties.text-spacing-trim.normal css.properties.text-spacing-trim.space-all css.properties.text-spacing-trim.space-first css.properties.text-spacing-trim.trim-start
text-stroke-fill	Text stroke and fill (compatibility prefixes)	The -webkit-text-stroke-width and -webkit-text-stroke-color CSS properties set the thickness and color of text outlines. The -webkit-text-fill-color sets the color within text character outlines. Both default to the text color.	css.properties.-webkit-text-fill-color css.properties.-webkit-text-stroke css.properties.-webkit-text-stroke-color css.properties.-webkit-text-stroke-width
text-tracks	Text tracks	The <track> element is used as a child of the media elements that lets you specify a timed text track to be displayed in parallel with the media element.	api.HTMLMediaElement.addTextTrack api.HTMLTrackElement api.HTMLTrackElement.cuechange_event api.HTMLTrackElement.default api.HTMLTrackElement.kind api.HTMLTrackElement.label api.HTMLTrackElement.readyState api.HTMLTrackElement.src api.HTMLTrackElement.srclang api.HTMLTrackElement.track api.TextTrack api.TextTrack.activeCues api.TextTrack.addCue api.TextTrack.cuechange_event api.TextTrack.cues api.TextTrack.id api.TextTrack.inBandMetadataTrackDispatchType api.TextTrack.kind api.TextTrack.label api.TextTrack.language api.TextTrack.mode api.TextTrack.removeCue api.TextTrackCue api.TextTrackCue.endTime api.TextTrackCue.enter_event api.TextTrackCue.exit_event api.TextTrackCue.id api.TextTrackCue.pauseOnExit api.TextTrackCue.startTime api.TextTrackCue.track api.TextTrackCueList api.TextTrackCueList.getCueById api.TextTrackCueList.length api.TextTrackList api.TextTrackList.addtrack_event api.TextTrackList.change_event api.TextTrackList.getTrackById api.TextTrackList.length api.TextTrackList.removetrack_event html.elements.track html.elements.track.default html.elements.track.kind html.elements.track.label html.elements.track.src html.elements.track.srclang
text-transform	text-transform	The text-transform CSS property sets text case and capitalization.	css.properties.text-transform css.properties.text-transform.capitalize css.properties.text-transform.dutch_ij_digraph css.properties.text-transform.full-size-kana css.properties.text-transform.full-width css.properties.text-transform.greek_accented_characters css.properties.text-transform.lowercase css.properties.text-transform.lowercase_sigma css.properties.text-transform.none css.properties.text-transform.turkic_is css.properties.text-transform.uppercase css.properties.text-transform.uppercase_eszett
text-underline-position	Text underline position	The text-underline-position and text-underline-offset CSS properties set the position and distance from initial position of text underlines on text with text-decoration: underline.	css.properties.text-underline-offset css.properties.text-underline-offset.auto css.properties.text-underline-offset.percentage css.properties.text-underline-position css.properties.text-underline-position.from-font css.properties.text-underline-position.left css.properties.text-underline-position.right css.properties.text-underline-position.under
text-wrap	text-wrap	The text-wrap CSS property sets how lines break in text that overflows the container. It is a shorthand for text-wrap-style and text-wrap-mode.	css.properties.text-wrap css.properties.text-wrap.wrap
text-wrap-balance	text-wrap: balance	The text-wrap: balance CSS declaration balances the length of each line when text is broken into multiple lines. Also known as headline balancing.	css.properties.text-wrap.balance
text-wrap-mode	text-wrap-mode	The text-wrap-mode CSS property sets whether lines may wrap with the values wrap and nowrap. It is a longhand property for both white-space and text-wrap.	css.properties.text-wrap-mode css.properties.text-wrap-mode.nowrap css.properties.text-wrap-mode.wrap
text-wrap-nowrap	text-wrap: nowrap	The text-wrap: nowrap CSS declaration prevents text breaking into multiple lines. Text that doesn't fit overflows instead.	css.properties.text-wrap.nowrap
text-wrap-pretty	text-wrap: pretty	The text-wrap: pretty CSS declaration prioritizes better layout over speed when text is broken into multiple lines.	css.properties.text-wrap.pretty
text-wrap-stable	text-wrap: stable	The text-wrap: stable CSS declaration wraps text using the default algorithm, but does not change wrapping on earlier lines while the text is being edited.	css.properties.text-wrap.stable
text-wrap-style	text-wrap-style	The text-wrap-style CSS property sets how lines break in text that overflows the container. It can also be set with the text-wrap shorthand.	css.properties.text-wrap-style css.properties.text-wrap-style.auto css.properties.text-wrap-style.balance css.properties.text-wrap-style.pretty css.properties.text-wrap-style.stable
textarea	<textarea>	The <textarea> element represents an editing control that allows users to enter multi-line, free-form, plain text.	api.HTMLTextAreaElement api.HTMLTextAreaElement.autocomplete api.HTMLTextAreaElement.cols api.HTMLTextAreaElement.defaultValue api.HTMLTextAreaElement.disabled api.HTMLTextAreaElement.form api.HTMLTextAreaElement.labels api.HTMLTextAreaElement.maxLength api.HTMLTextAreaElement.minLength api.HTMLTextAreaElement.name api.HTMLTextAreaElement.placeholder api.HTMLTextAreaElement.readOnly api.HTMLTextAreaElement.required api.HTMLTextAreaElement.rows api.HTMLTextAreaElement.select api.HTMLTextAreaElement.select_event api.HTMLTextAreaElement.selectionDirection api.HTMLTextAreaElement.selectionEnd api.HTMLTextAreaElement.selectionStart api.HTMLTextAreaElement.setRangeText api.HTMLTextAreaElement.setSelectionRange api.HTMLTextAreaElement.textLength api.HTMLTextAreaElement.type api.HTMLTextAreaElement.value api.HTMLTextAreaElement.wrap html.elements.textarea html.elements.textarea.autocomplete html.elements.textarea.cols html.elements.textarea.disabled html.elements.textarea.form html.elements.textarea.maxlength html.elements.textarea.minlength html.elements.textarea.name html.elements.textarea.placeholder html.elements.textarea.placeholder.line_breaks html.elements.textarea.readonly html.elements.textarea.required html.elements.textarea.rows html.elements.textarea.spellcheck html.elements.textarea.wrap html.elements.textarea.wrap.hard
time	<time>	The <time> HTML element represents a time, such as a calendar date, clock time, or duration. It may include the datetime attribute to translate dates into machine-readable format.	api.HTMLTimeElement api.HTMLTimeElement.dateTime html.elements.time html.elements.time.datetime
time-relative-selectors	Time-relative pseudo-selectors	The :future and :past CSS pseudo-classes match upcoming or prior elements during media playback.	css.selectors.future css.selectors.past
title	<title>	The <title> element sets the title of the document and exposes it to users via the UI of the browser or app they're using and through assistive technology.	api.HTMLTitleElement api.HTMLTitleElement.text html.elements.title
title-attr	Title	The title global HTML attribute sets information about an element, such as a name or description. The value is typically shown as a tooltip that appears on mouse over. Since it's not often available to touch-only, keyboard-only, or assistive technology users, it's not a substitute for other text.	api.HTMLElement.title html.global_attributes.title
top-level-await	Top-level await	The await keyword, when used at the top level of a module (outside of an async function), delays parent module execution until after a promise fulfills.	javascript.operators.await.top_level
touch-action	touch-action	The touch-action CSS property sets whether an element on a touch screen can be panned or pinched to zoom.	css.properties.touch-action css.properties.touch-action.manipulation css.properties.touch-action.none css.properties.touch-action.pan-down css.properties.touch-action.pan-left css.properties.touch-action.pan-right css.properties.touch-action.pan-up css.properties.touch-action.pan-x css.properties.touch-action.pan-y css.properties.touch-action.pinch-zoom
touch-events	Touch events	Touch events touchstart, touchmove, touchend, and touchcancel fire when users interact with a touch-sensitive surface, such as a screen or drawing tablet. These events are similar to mouse events.	api.Element.touchcancel_event api.Element.touchend_event api.Element.touchmove_event api.Element.touchstart_event api.Touch api.Touch.Touch api.Touch.altitudeAngle api.Touch.azimuthAngle api.Touch.clientX api.Touch.clientY api.Touch.force api.Touch.identifier api.Touch.pageX api.Touch.pageY api.Touch.radiusX api.Touch.radiusY api.Touch.rotationAngle api.Touch.screenX api.Touch.screenY api.Touch.target api.Touch.touchType api.TouchEvent api.TouchEvent.TouchEvent api.TouchEvent.altKey api.TouchEvent.changedTouches api.TouchEvent.ctrlKey api.TouchEvent.metaKey api.TouchEvent.shiftKey api.TouchEvent.targetTouches api.TouchEvent.touches api.TouchList api.TouchList.item api.TouchList.length
transferable-arraybuffer	Transferable ArrayBuffer	The transfer() and transferToFixedLength() methods of ArrayBuffer move a buffer from one context to another (for example, to a worker).	javascript.builtins.ArrayBuffer.detached javascript.builtins.ArrayBuffer.transfer javascript.builtins.ArrayBuffer.transferToFixedLength
transform-box	transform-box	The transform-box CSS property sets the position and dimensions of the reference box relative to which an element's transformations are calculated.	css.properties.transform-box css.properties.transform-box.border-box css.properties.transform-box.content-box css.properties.transform-box.fill-box css.properties.transform-box.stroke-box css.properties.transform-box.view-box
transforms2d	2D transforms	The transform CSS property and its 2D transform functions allow rotating, scaling, skewing, and translating an element. Arbitrary 2D transforms are also possible using a transformation matrix.	css.properties.transform css.properties.transform-origin css.properties.transform-origin.bottom css.properties.transform-origin.center css.properties.transform-origin.left css.properties.transform-origin.right css.properties.transform-origin.three_value_syntax css.properties.transform-origin.top css.types.angle css.types.angle-percentage css.types.angle.deg css.types.angle.grad css.types.angle.rad css.types.angle.turn css.types.position css.types.position.four_value_syntax css.types.position.keyword_value_syntax css.types.transform-function css.types.transform-function.matrix css.types.transform-function.rotate css.types.transform-function.scale css.types.transform-function.scaleX css.types.transform-function.scaleY css.types.transform-function.skew css.types.transform-function.skewX css.types.transform-function.skewY css.types.transform-function.translate css.types.transform-function.translateX css.types.transform-function.translateY
transforms3d	3D transforms	The transform CSS property and its 3D transform functions allow rotations and other transforms in three dimensions, including perspective transforms.	css.properties.backface-visibility css.properties.perspective css.properties.perspective-origin css.properties.perspective-origin.bottom css.properties.perspective-origin.center css.properties.perspective-origin.left css.properties.perspective-origin.right css.properties.perspective-origin.top css.properties.perspective.none css.properties.transform-style css.properties.transform.3d css.types.transform-function.matrix3d css.types.transform-function.perspective css.types.transform-function.perspective.none css.types.transform-function.rotate3d css.types.transform-function.rotateX css.types.transform-function.rotateY css.types.transform-function.rotateZ css.types.transform-function.scale3d css.types.transform-function.scaleZ css.types.transform-function.translate3d css.types.transform-function.translateZ
transition-behavior	transition-behavior	The transition-behavior: allow-discrete CSS declaration allows transitions for properties whose animation behavior is discrete. Such properties can't be interpolated and swap from their start value to the end value at 50%.	css.properties.transition-behavior css.properties.transition.transition-behavior
transitions	Transitions (CSS)	The transition shorthand CSS property sets how changes to an element's styles may occur over time. Transitions can be applied to specific CSS properties, all properties, or none.	api.CSSTransition api.CSSTransition.transitionProperty api.Element.transitioncancel_event api.Element.transitionend_event api.Element.transitionrun_event api.Element.transitionstart_event api.TransitionEvent api.TransitionEvent.TransitionEvent api.TransitionEvent.elapsedTime api.TransitionEvent.propertyName api.TransitionEvent.pseudoElement css.properties.transition css.properties.transition-delay css.properties.transition-duration css.properties.transition-property css.properties.transition-property.IDENT_value css.properties.transition-property.all css.properties.transition-property.none css.properties.transition-timing-function css.properties.transition-timing-function.jump css.properties.transition.gradients_can_animate
translate	translate attribute	The translate HTML attribute marks whether an element's text should be translated.	api.HTMLElement.translate html.global_attributes.translate
trig-functions	sin(), cos(), tan(), asin(), acos(), atan(), and atan2() (CSS)	The sin(), cos(), tan(), asin(), acos(), atan(), and atan2() CSS functions compute various trigonometric functions.	css.types.acos css.types.asin css.types.atan css.types.atan2 css.types.cos css.types.sin css.types.tan
trusted-types	Trusted types	Trusted types allow you to lock down insecure parts of the DOM API and prevent client-side cross-site scripting (XSS) attacks.	api.TrustedHTML api.TrustedHTML.toJSON api.TrustedHTML.toString api.TrustedScript api.TrustedScript.toJSON api.TrustedScript.toString api.TrustedScriptURL api.TrustedScriptURL.toJSON api.TrustedScriptURL.toString api.TrustedTypePolicy api.TrustedTypePolicy.createHTML api.TrustedTypePolicy.createScript api.TrustedTypePolicy.createScriptURL api.TrustedTypePolicy.name api.TrustedTypePolicyFactory api.TrustedTypePolicyFactory.createPolicy api.TrustedTypePolicyFactory.defaultPolicy api.TrustedTypePolicyFactory.emptyHTML api.TrustedTypePolicyFactory.emptyScript api.TrustedTypePolicyFactory.getAttributeType api.TrustedTypePolicyFactory.getPropertyType api.TrustedTypePolicyFactory.isHTML api.TrustedTypePolicyFactory.isScript api.TrustedTypePolicyFactory.isScriptURL api.trustedTypes http.headers.Content-Security-Policy.require-trusted-types-for http.headers.Content-Security-Policy.trusted-types
two-value-display	Two-value display property	The display CSS property accepts multiple keyword values, such as inline flex or block flow, to explicitly set an element's inner and outer layout mode. Also known as 2-value, multi-keyword, or multiple value syntax.	css.properties.display.multi-keyword_values
typed-array-iteration-methods	Typed array iteration methods	Typed array iteration methods	javascript.builtins.TypedArray.every javascript.builtins.TypedArray.filter javascript.builtins.TypedArray.forEach javascript.builtins.TypedArray.indexOf javascript.builtins.TypedArray.lastIndexOf javascript.builtins.TypedArray.map javascript.builtins.TypedArray.reduce javascript.builtins.TypedArray.reduceRight javascript.builtins.TypedArray.some
typed-array-iterators	Typed array iterators	Typed arrays are iterable with the for … of statement and enumerable with the methods entries(), keys(), and values().	javascript.builtins.TypedArray.@@iterator javascript.builtins.TypedArray.entries javascript.builtins.TypedArray.keys javascript.builtins.TypedArray.values
typed-arrays	Typed arrays (initial support)	Typed arrays are ordered lists of JavaScript values, where all values are of the same numerical type, such as 8-bit integers or 32-bit floating point numbers.	javascript.builtins.ArrayBuffer javascript.builtins.ArrayBuffer.@@species javascript.builtins.ArrayBuffer.ArrayBuffer javascript.builtins.ArrayBuffer.byteLength javascript.builtins.ArrayBuffer.isView javascript.builtins.ArrayBuffer.slice javascript.builtins.DataView javascript.builtins.DataView.DataView javascript.builtins.DataView.buffer javascript.builtins.DataView.byteLength javascript.builtins.DataView.byteOffset javascript.builtins.DataView.getFloat32 javascript.builtins.DataView.getFloat64 javascript.builtins.DataView.getInt16 javascript.builtins.DataView.getInt32 javascript.builtins.DataView.getInt8 javascript.builtins.DataView.getUint16 javascript.builtins.DataView.getUint32 javascript.builtins.DataView.getUint8 javascript.builtins.DataView.setFloat32 javascript.builtins.DataView.setFloat64 javascript.builtins.DataView.setInt16 javascript.builtins.DataView.setInt32 javascript.builtins.DataView.setInt8 javascript.builtins.DataView.setUint16 javascript.builtins.DataView.setUint32 javascript.builtins.DataView.setUint8 javascript.builtins.Float32Array javascript.builtins.Float32Array.Float32Array javascript.builtins.Float32Array.Float32Array.constructor_without_parameters javascript.builtins.Float32Array.Float32Array.iterable_allowed javascript.builtins.Float64Array javascript.builtins.Float64Array.Float64Array javascript.builtins.Float64Array.Float64Array.constructor_without_parameters javascript.builtins.Float64Array.Float64Array.iterable_allowed javascript.builtins.Int16Array javascript.builtins.Int16Array.Int16Array javascript.builtins.Int16Array.Int16Array.constructor_without_parameters javascript.builtins.Int16Array.Int16Array.iterable_allowed javascript.builtins.Int32Array javascript.builtins.Int32Array.Int32Array javascript.builtins.Int32Array.Int32Array.constructor_without_parameters javascript.builtins.Int32Array.Int32Array.iterable_allowed javascript.builtins.Int8Array javascript.builtins.Int8Array.Int8Array javascript.builtins.Int8Array.Int8Array.constructor_without_parameters javascript.builtins.Int8Array.Int8Array.iterable_allowed javascript.builtins.TypedArray javascript.builtins.TypedArray.@@species javascript.builtins.TypedArray.BYTES_PER_ELEMENT javascript.builtins.TypedArray.buffer javascript.builtins.TypedArray.byteLength javascript.builtins.TypedArray.byteOffset javascript.builtins.TypedArray.constructor_without_parameters javascript.builtins.TypedArray.index_properties_not_consulting_prototype javascript.builtins.TypedArray.iterable_in_constructor javascript.builtins.TypedArray.join javascript.builtins.TypedArray.length javascript.builtins.TypedArray.name javascript.builtins.TypedArray.named_properties javascript.builtins.TypedArray.reverse javascript.builtins.TypedArray.set javascript.builtins.TypedArray.slice javascript.builtins.TypedArray.sort javascript.builtins.TypedArray.subarray javascript.builtins.TypedArray.toString javascript.builtins.Uint16Array javascript.builtins.Uint16Array.Uint16Array javascript.builtins.Uint16Array.Uint16Array.constructor_without_parameters javascript.builtins.Uint16Array.Uint16Array.iterable_allowed javascript.builtins.Uint32Array javascript.builtins.Uint32Array.Uint32Array javascript.builtins.Uint32Array.Uint32Array.constructor_without_parameters javascript.builtins.Uint32Array.Uint32Array.iterable_allowed javascript.builtins.Uint8Array javascript.builtins.Uint8Array.Uint8Array javascript.builtins.Uint8Array.Uint8Array.constructor_without_parameters javascript.builtins.Uint8Array.Uint8Array.iterable_allowed javascript.builtins.Uint8ClampedArray javascript.builtins.Uint8ClampedArray.Uint8ClampedArray javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.constructor_without_parameters javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.iterable_allowed
u	<u>	The <u> HTML element makes non-textual annotations, styling text as underlined by default.	html.elements.u
ua-client-hints	User agent client hints	The Sec-CH-UA HTTP request header and the navigator.userAgentData API expose browser and platform information used to vary responses and application logic. User agent client hints are similar to user agent strings but more privacy-preserving and safer to parse.	api.Navigator.userAgentData api.Navigator.userAgentData.secure_context_required api.NavigatorUAData api.NavigatorUAData.brands api.NavigatorUAData.getHighEntropyValues api.NavigatorUAData.mobile api.NavigatorUAData.platform api.NavigatorUAData.toJSON api.WorkerNavigator.userAgentData http.headers.Accept-CH.Sec-CH-UA http.headers.Accept-CH.Sec-CH-UA-Arch http.headers.Accept-CH.Sec-CH-UA-Full-Version http.headers.Accept-CH.Sec-CH-UA-Mobile http.headers.Accept-CH.Sec-CH-UA-Model http.headers.Accept-CH.Sec-CH-UA-Platform http.headers.Accept-CH.Sec-CH-UA-Platform-Version http.headers.Sec-CH-UA http.headers.Sec-CH-UA-Arch http.headers.Sec-CH-UA-Bitness http.headers.Sec-CH-UA-Full-Version-List http.headers.Sec-CH-UA-Mobile http.headers.Sec-CH-UA-Model http.headers.Sec-CH-UA-Platform http.headers.Sec-CH-UA-Platform-Version
uint8array-base64-hex	Uint8Array base64 and hex conversion	The Uint8Array object methods fromBase64(), toBase64(), and setFromBase64() convert to and from base64 strings. The fromHex(), toHex(), and setFromHex() methods convert to and from hex strings.	javascript.builtins.Uint8Array.fromBase64 javascript.builtins.Uint8Array.fromHex javascript.builtins.Uint8Array.setFromBase64 javascript.builtins.Uint8Array.setFromHex javascript.builtins.Uint8Array.toBase64 javascript.builtins.Uint8Array.toHex
unicode-point-escapes	Unicode point escapes	Unicode point escapes (\\u{}) represent Unicode characters within strings.	javascript.grammar.unicode_point_escapes
unset-value	unset	The unset keyword resets any CSS property, removing any values previously set by the author, user, or browser. Inherited properties (like color) reset to the parent element's computed value. Non-inherited properties (like display) reset to the specified initial value (inline).	css.types.global_keywords.unset
update	Update frequency media query	The update CSS media query sets styles based on whether and how fast the user's device can modify display after it has been rendered. For example, you can avoid animations on devices that aren't fast enough to display them smoothly.	css.at-rules.media.update
upgrade-insecure-requests	Upgrade insecure requests	The Upgrade-Insecure-Requests HTTP request header tells the server that the response should redirect to a secure (HTTPS) resource.	http.headers.Content-Security-Policy.upgrade-insecure-requests http.headers.Upgrade-Insecure-Requests
url	URL	A URL object represents a web address, like https://example.com/, and parts of the address, such as the domain, path, and query string (as URLSearchParams).	api.URL api.URL.URL api.URL.hash api.URL.host api.URL.hostname api.URL.href api.URL.origin api.URL.parse_static api.URL.password api.URL.pathname api.URL.port api.URL.protocol api.URL.search api.URL.searchParams api.URL.toJSON api.URL.toString api.URL.username api.URLSearchParams api.URLSearchParams.@@iterator api.URLSearchParams.URLSearchParams api.URLSearchParams.URLSearchParams.USVString api.URLSearchParams.URLSearchParams.record api.URLSearchParams.URLSearchParams.sequence api.URLSearchParams.append api.URLSearchParams.delete api.URLSearchParams.delete.value_parameter api.URLSearchParams.entries api.URLSearchParams.forEach api.URLSearchParams.get api.URLSearchParams.getAll api.URLSearchParams.has api.URLSearchParams.has.value_parameter api.URLSearchParams.keys api.URLSearchParams.set api.URLSearchParams.size api.URLSearchParams.sort api.URLSearchParams.toString api.URLSearchParams.values
url-canparse	URL.canParse()	The URL.canParse() static method checks whether a URL can be parsed into a valid URL object. It's an alternative to calling new URL() in a try … catch statement.	api.URL.canParse_static
urlpattern	URLPattern	The URLPattern API creates patterns that can be matched against URLs or URL components.	api.URLPattern api.URLPattern.URLPattern api.URLPattern.URLPattern.ignoreCase_option api.URLPattern.exec api.URLPattern.hasRegExpGroups api.URLPattern.hash api.URLPattern.hostname api.URLPattern.password api.URLPattern.pathname api.URLPattern.port api.URLPattern.protocol api.URLPattern.search api.URLPattern.test api.URLPattern.username
user-action-pseudos	User action pseudo-classes	The :active, :focus, and :hover CSS pseudo-classes match elements based on how users are interacting with them.	css.selectors.active css.selectors.active.non_a_elements css.selectors.focus css.selectors.hover
user-activation	User activation	The navigator.userActivation API reveals whether the user has interacted with the page through an "activation" gesture such as a click, tap, or key press. User activation gated APIs (such as the fullscreen API) fail without user interaction, and this API allows you to predict such a failure.	api.Navigator.userActivation api.UserActivation api.UserActivation.hasBeenActive api.UserActivation.isActive
user-agent-sniffing	User agent sniffing	The navigator.userAgent read-only property returns the user agent string for the current browser. Selectively showing content based on the user agent string is unreliable. Consider using feature detection instead.	api.Navigator.userAgent api.WorkerNavigator.userAgent
user-pseudos	:user-valid and :user-invalid	The :user-valid and :user-invalid pseudo-classes match form controls that have been marked as valid or invalid based on their validation constraints.	css.selectors.user-invalid css.selectors.user-valid
user-select	user-select	The user-select CSS property controls which elements can be selected by the user.	css.properties.user-select css.properties.user-select.all css.properties.user-select.auto css.properties.user-select.none css.properties.user-select.text
var	<var>	The <var> element represents the name of a variable in a mathematical expression or a programming context.	html.elements.var
vertical-align	vertical-align	The vertical-align CSS property sets the vertical alignment of inline, inline-block, and table cell elements. It has no effect on block-level elements.	css.properties.vertical-align css.properties.vertical-align.baseline css.properties.vertical-align.bottom css.properties.vertical-align.middle css.properties.vertical-align.sub css.properties.vertical-align.super css.properties.vertical-align.text-bottom css.properties.vertical-align.text-top css.properties.vertical-align.top
vertical-form-controls	Vertical form controls	The writing-mode CSS property orients form elements (such as radio buttons, progress bars, or select menus) vertically when the writing mode is vertical-lr or vertical-rl. The direction CSS property sets whether inputs flow from top to bottom or bottom to top.	css.properties.direction.vertical_slider_direction css.properties.writing-mode.vertical_oriented_form_controls
vibration	Vibration	The navigator.vibrate() method makes a tactile alert, if the device is equipped with a haptic motor.	api.Navigator.vibrate
video	<video>	The <video> element plays videos or movies, optionally with controls provided by the browser.	api.HTMLMediaElement api.HTMLMediaElement.abort_event api.HTMLMediaElement.autoplay api.HTMLMediaElement.buffered api.HTMLMediaElement.canPlayType api.HTMLMediaElement.canplay_event api.HTMLMediaElement.canplaythrough_event api.HTMLMediaElement.controls api.HTMLMediaElement.crossOrigin api.HTMLMediaElement.currentSrc api.HTMLMediaElement.currentTime api.HTMLMediaElement.defaultMuted api.HTMLMediaElement.defaultPlaybackRate api.HTMLMediaElement.duration api.HTMLMediaElement.durationchange_event api.HTMLMediaElement.emptied_event api.HTMLMediaElement.ended api.HTMLMediaElement.ended_event api.HTMLMediaElement.error api.HTMLMediaElement.error_event api.HTMLMediaElement.load api.HTMLMediaElement.loadeddata_event api.HTMLMediaElement.loadedmetadata_event api.HTMLMediaElement.loadstart_event api.HTMLMediaElement.loop api.HTMLMediaElement.muted api.HTMLMediaElement.networkState api.HTMLMediaElement.pause api.HTMLMediaElement.pause_event api.HTMLMediaElement.paused api.HTMLMediaElement.play api.HTMLMediaElement.play.returns_promise api.HTMLMediaElement.play_event api.HTMLMediaElement.playbackRate api.HTMLMediaElement.played api.HTMLMediaElement.playing_event api.HTMLMediaElement.preload api.HTMLMediaElement.progress_event api.HTMLMediaElement.ratechange_event api.HTMLMediaElement.readyState api.HTMLMediaElement.seekable api.HTMLMediaElement.seeked_event api.HTMLMediaElement.seeking api.HTMLMediaElement.seeking_event api.HTMLMediaElement.src api.HTMLMediaElement.stalled_event api.HTMLMediaElement.suspend_event api.HTMLMediaElement.timeupdate_event api.HTMLMediaElement.volume api.HTMLMediaElement.volumechange_event api.HTMLMediaElement.waiting_event api.HTMLVideoElement api.HTMLVideoElement.height api.HTMLVideoElement.poster api.HTMLVideoElement.resize_event api.HTMLVideoElement.videoHeight api.HTMLVideoElement.videoWidth api.HTMLVideoElement.width html.elements.video html.elements.video.autoplay html.elements.video.controls html.elements.video.crossorigin html.elements.video.height html.elements.video.loop html.elements.video.muted html.elements.video.poster html.elements.video.preload html.elements.video.src html.elements.video.width
video-dynamic-range	video-dynamic-range media query	The video-dynamic-range CSS media query sets styles based on whether a device can display video with at least standard range colors or at least high range colors. Non-visual devices will match neither.	css.at-rules.media.video-dynamic-range
view-transition-class	view-transition-class	The view-transition-class CSS property sets a name that can be used to apply styles to multiple named view transition pseudo-elements.	css.properties.view-transition-class css.properties.view-transition-class.none
view-transitions	View transitions	View transitions allow you to create animated visual transitions between different states of a document.	api.Document.startViewTransition api.PageRevealEvent api.PageRevealEvent.PageRevealEvent api.PageRevealEvent.viewTransition api.PageSwapEvent api.PageSwapEvent.PageSwapEvent api.PageSwapEvent.activation api.PageSwapEvent.viewTransition api.ViewTransition api.ViewTransition.finished api.ViewTransition.ready api.ViewTransition.skipTransition api.ViewTransition.updateCallbackDone api.Window.pagereveal_event api.Window.pageswap_event css.properties.view-transition-name css.properties.view-transition-name.none css.selectors.view-transition css.selectors.view-transition-group css.selectors.view-transition-image-pair css.selectors.view-transition-new css.selectors.view-transition-old
viewport-unit-variants	Small, large, and dynamic viewport units	The sv, lv, and dv* CSS viewport units are relative to the smallest, largest, and current (dynamic) viewport size. They are used to size elements in relation to the viewport's dimensions.	css.types.length.vb css.types.length.vi css.types.length.viewport_percentage_units_dynamic css.types.length.viewport_percentage_units_large css.types.length.viewport_percentage_units_small
viewport-units	Viewport units	The vw, vh, vmin, and vmax CSS viewport units are relative to the size of the viewport, and are used to size elements in relation to the viewport's dimensions.	css.types.length.vh css.types.length.vmax css.types.length.vmin css.types.length.vw
virtual-keyboard	Virtual keyboard	The navigator.virtualKeyboard API inspects and controls on-screen virtual keyboards. You can use it to programmatically hide or show a virtual keyboard or respond to the keyboard disappearing or appearing.	api.HTMLElement.virtualKeyboardPolicy api.Navigator.virtualKeyboard api.VirtualKeyboard api.VirtualKeyboard.boundingRect api.VirtualKeyboard.geometrychange_event api.VirtualKeyboard.hide api.VirtualKeyboard.overlaysContent api.VirtualKeyboard.show html.global_attributes.virtualkeyboardpolicy
virtual-pressure-sources	Virtual pressure sources	The CreateVirtualPressureSource WebDriver command creates artificial sources of compute pressure for testing without the need real device sources of compute pressure.	webdriver.commands.CreateVirtualPressureSource webdriver.commands.DeleteVirtualPressureSource webdriver.commands.UpdateVirtualPressureSource
virtual-sensors	Virtual sensors	The CreateVirtualSensor WebDriver command creates a virtual sensor for testing applications that use sensor APIs, without the need for real device sensors.	webdriver.commands.CreateVirtualSensor webdriver.commands.DeleteVirtualSensor webdriver.commands.GetVirtualSensorInformation webdriver.commands.UpdateVirtualSensorReading
visibility	visibility	The visibility CSS property sets whether an element is shown. Invisible elements still affect the document layout.	css.properties.visibility css.properties.visibility.collapse css.properties.visibility.hidden css.properties.visibility.visible
visual-viewport	Visual viewport API	The visualViewport API provides a way to query and modify the user-visible viewport of a web page.	api.VisualViewport api.VisualViewport.height api.VisualViewport.offsetLeft api.VisualViewport.offsetTop api.VisualViewport.pageLeft api.VisualViewport.pageTop api.VisualViewport.resize_event api.VisualViewport.scale api.VisualViewport.scroll_event api.VisualViewport.scrollend_event api.VisualViewport.width api.Window.visualViewport
wasm	WebAssembly	The WebAssembly.instantiate() and WebAssembly.instantiateStreaming() global static methods load WebAssembly code (also known as Wasm), a portable binary instruction format.	webassembly.api webassembly.api.CompileError webassembly.api.CompileError.CompileError webassembly.api.Global webassembly.api.Global.Global webassembly.api.Global.value webassembly.api.Global.valueOf webassembly.api.Instance webassembly.api.Instance.Instance webassembly.api.Instance.exports webassembly.api.LinkError webassembly.api.LinkError.LinkError webassembly.api.Memory webassembly.api.Memory.Memory webassembly.api.Memory.buffer webassembly.api.Memory.grow webassembly.api.Module webassembly.api.Module.Module webassembly.api.Module.customSections_static webassembly.api.Module.exports_static webassembly.api.Module.imports_static webassembly.api.RuntimeError webassembly.api.RuntimeError.RuntimeError webassembly.api.Table webassembly.api.Table.Table webassembly.api.Table.get webassembly.api.Table.grow webassembly.api.Table.length webassembly.api.Table.set webassembly.api.compileStreaming_static webassembly.api.compile_static webassembly.api.instantiateStreaming_static webassembly.api.instantiate_static webassembly.api.validate_static
wasm-bigint	BigInt to i64 conversion (WebAssembly)	Integer values pass bidirectionally between JavaScript and WebAssembly, converted to i64 values in WebAssembly or BigInt values in JavaScript.	webassembly.BigInt-to-i64-integration
wasm-bulk-memory	Bulk memory operations (WebAssembly)	Bulk memory operations, such as copy and init, mirror the efficiency of native memcpy and memmove operations.	webassembly.bulk-memory-operations
wasm-exception-handling	Exception handling (WebAssembly)	Exceptions break the normal control flow of execution to represent exceptional behavior, such as an error. You can respond to the exception in JavaScript code.	webassembly.api.Exception webassembly.api.Exception.Exception webassembly.api.Exception.Exception.options_parameter_traceStack webassembly.api.Exception.getArg webassembly.api.Exception.is webassembly.api.Exception.stack webassembly.api.Tag webassembly.api.Tag.Tag webassembly.api.Tag.type webassembly.exception-handling
wasm-exnref-exceptions	Exception references with exnref (WebAssembly)	When caught, an exception is reified into an exception reference, a value of the new type exnref.	webassembly.exceptionsFinal
wasm-extended-constant-expressions	Extended constant expressions (WebAssembly)	The i32.add, i32.sub, i32.mul, i64.add, i64.sub, and i64.mul operations extend constant expressions to include arithmetic.	webassembly.extended-constant-expressions
wasm-garbage-collection	Garbage collection (WebAssembly)	Garbage collection tracks references for better memory management with garbage-collected languages running in WebAssmbly.	webassembly.garbage-collection
wasm-memory64	Memory64 (WebAssembly)	Instructions accept 64-bit memory indexes.	webassembly.memory64
wasm-multi-memory	Multi-memory (WebAssembly)	A single module in WebAssembly can have multiple memories.	webassembly.multiMemory
wasm-multi-value	Multi-value (WebAssembly)	Instructions and blocks can produce multiple result values.	webassembly.multi-value
wasm-mutable-globals	Import and export of mutable globals (WebAssembly)	Mutable global variables are importable and exportable.	webassembly.mutable-globals
wasm-non-trapping-float-to-int	Non-trapping float-to-int conversion (WebAssembly)	Saturating floating-point to integer conversion operators return the maximum or minimum integer value on overflow instead of trapping.	webassembly.non-trapping-float-to-int-conversions
wasm-reference-types	Reference types (WebAssembly)	The externref type can be both a value type and a table element type, while funcref can be a value type.	webassembly.reference-types
wasm-sign-extension-operators	Sign extension operators (WebAssembly)	Sign-extension operator instructions extend the width of 8-bit, 16-bit, and 32-bit values to 32-bit and 64-bit values.	webassembly.sign-extension-operations
wasm-simd	Fixed-width SIMD (WebAssembly)	128-bit SIMD (Single Instruction Multiple Data) performs one instruction on multiple units of data, when running on hardware that supports such instructions. Also known as vector instructions.	webassembly.fixed-width-SIMD
wasm-simd-relaxed	Relaxed-width SIMD (WebAssembly)	Relaxed SIMD (Single Instruction Multiple Data) introduces local non-determinism, where the results of the instructions may vary based on hardware support.	webassembly.relaxed-SIMD
wasm-string-builtins	String builtins (WebAssembly)	The WebAssembly builtin string functions mirror a subset of the JavaScript String API and adapt it to be efficiently callable without JavaScript glue code.	webassembly.api.Module.Module.compile_options webassembly.api.compileStreaming_static.compile_options webassembly.api.compile_static.compile_options webassembly.api.instantiateStreaming_static.compile_options webassembly.api.instantiate_static.compile_options webassembly.api.validate_static.compile_options webassembly.jsStringBuiltins
wasm-tail-call-optimization	Tail call optimization (WebAssembly)	Tail call optimization discards a caller frame and replaces the call with a jump instruction.	webassembly.tail-calls
wasm-threads	Threads and atomics (WebAssembly)	Threads in WebAssembly run code in parallel, while atomic memory instructions can guarantee that no two threads can read or write to shared memory at the same time.	webassembly.api.Memory.Memory.shared webassembly.threads-and-atomics
wasm-typed-fun-refs	Typed function references (WebAssembly)	A typed function reference can be called directly.	webassembly.typedFunctionReferences
wbr	<wbr>	The <wbr> HTML element represents a word break opportunity, to explicitly mark a place within a word where a line might be broken.	html.elements.wbr
weak-references	Weak references	The WeakRef and FinalizationRegistry objects hold references to garbage-collectable objects without creating strong references that prevent their garbage collection.	javascript.builtins.FinalizationRegistry javascript.builtins.FinalizationRegistry.FinalizationRegistry javascript.builtins.FinalizationRegistry.register javascript.builtins.FinalizationRegistry.symbol_as_target javascript.builtins.FinalizationRegistry.unregister javascript.builtins.WeakRef javascript.builtins.WeakRef.WeakRef javascript.builtins.WeakRef.deref javascript.builtins.WeakRef.symbol_as_target
weakmap	WeakMap	A WeakMap object holds key-value pairs that do not create strong references to its keys, such that value data can be associated with a key without preventing garbage collection of the key.	javascript.builtins.WeakMap javascript.builtins.WeakMap.WeakMap javascript.builtins.WeakMap.WeakMap.iterable_allowed javascript.builtins.WeakMap.WeakMap.null_allowed javascript.builtins.WeakMap.delete javascript.builtins.WeakMap.get javascript.builtins.WeakMap.has javascript.builtins.WeakMap.set javascript.builtins.WeakMap.symbol_as_keys
weakset	WeakSet	A WeakSet object stores unique values of any type without creating strong references to the values, such that membership in the set does not prevent garbage collection of the value.	javascript.builtins.WeakSet javascript.builtins.WeakSet.WeakSet javascript.builtins.WeakSet.WeakSet.iterable_allowed javascript.builtins.WeakSet.WeakSet.null_allowed javascript.builtins.WeakSet.add javascript.builtins.WeakSet.delete javascript.builtins.WeakSet.has javascript.builtins.WeakSet.symbol_as_keys
web-animations	Web animations	The animate() method of Element objects programmatically animates elements over time and can synchronize the animations of multiple elements.	api.Animation api.Animation.Animation api.Animation.cancel api.Animation.cancel_event api.Animation.commitStyles api.Animation.currentTime api.Animation.effect api.Animation.finish api.Animation.finish_event api.Animation.finished api.Animation.id api.Animation.pause api.Animation.pending api.Animation.persist api.Animation.play api.Animation.playState api.Animation.playbackRate api.Animation.ready api.Animation.remove_event api.Animation.remove_filling_animation api.Animation.replaceState api.Animation.reverse api.Animation.startTime api.Animation.timeline api.Animation.updatePlaybackRate api.AnimationEffect api.AnimationEffect.getComputedTiming api.AnimationEffect.getTiming api.AnimationEffect.updateTiming api.AnimationPlaybackEvent api.AnimationPlaybackEvent.AnimationPlaybackEvent api.AnimationPlaybackEvent.currentTime api.AnimationPlaybackEvent.timelineTime api.AnimationTimeline api.AnimationTimeline.currentTime api.AnimationTimeline.duration api.Document.getAnimations api.Document.timeline api.DocumentTimeline api.DocumentTimeline.DocumentTimeline api.Element.animate api.Element.animate.implicit_tofrom api.Element.animate.options_composite_parameter api.Element.animate.options_id_parameter api.Element.animate.options_iterationComposite_parameter api.Element.animate.options_pseudoElement_parameter api.Element.animate.options_rangeEnd_parameter api.Element.animate.options_rangeStart_parameter api.Element.animate.options_timeline_parameter api.Element.animationcancel_event api.Element.animationend_event api.Element.animationiteration_event api.Element.animationstart_event api.Element.getAnimations api.KeyframeEffect api.KeyframeEffect.KeyframeEffect api.KeyframeEffect.composite api.KeyframeEffect.getKeyframes api.KeyframeEffect.iterationComposite api.KeyframeEffect.pseudoElement api.KeyframeEffect.setKeyframes api.KeyframeEffect.target api.ShadowRoot.getAnimations
web-audio	Web Audio	The Web Audio API creates graphs of audio nodes that handle sound inputs, synthesize sounds, apply effects, create visualizations, and output to audio devices.	api.AnalyserNode api.AnalyserNode.AnalyserNode api.AnalyserNode.fftSize api.AnalyserNode.frequencyBinCount api.AnalyserNode.getByteFrequencyData api.AnalyserNode.getByteTimeDomainData api.AnalyserNode.getFloatFrequencyData api.AnalyserNode.getFloatTimeDomainData api.AnalyserNode.maxDecibels api.AnalyserNode.minDecibels api.AnalyserNode.smoothingTimeConstant api.AudioBuffer api.AudioBuffer.AudioBuffer api.AudioBuffer.copyFromChannel api.AudioBuffer.copyToChannel api.AudioBuffer.duration api.AudioBuffer.getChannelData api.AudioBuffer.length api.AudioBuffer.numberOfChannels api.AudioBuffer.sampleRate api.AudioBufferSourceNode api.AudioBufferSourceNode.AudioBufferSourceNode api.AudioBufferSourceNode.buffer api.AudioBufferSourceNode.detune api.AudioBufferSourceNode.loop api.AudioBufferSourceNode.loopEnd api.AudioBufferSourceNode.loopStart api.AudioBufferSourceNode.playbackRate api.AudioBufferSourceNode.start api.AudioContext api.AudioContext.AudioContext api.AudioContext.AudioContext.options_latencyHint_parameter api.AudioContext.AudioContext.options_sampleRate_parameter api.AudioContext.AudioContext.options_sinkId_parameter api.AudioContext.baseLatency api.AudioContext.close api.AudioContext.createMediaElementSource api.AudioContext.createMediaStreamDestination api.AudioContext.createMediaStreamSource api.AudioContext.createMediaStreamTrackSource api.AudioContext.error_event api.AudioContext.getOutputTimestamp api.AudioContext.outputLatency api.AudioContext.resume api.AudioContext.setSinkId api.AudioContext.sinkId api.AudioContext.sinkchange_event api.AudioContext.suspend api.AudioDestinationNode api.AudioDestinationNode.maxChannelCount api.AudioListener api.AudioListener.forwardX api.AudioListener.forwardY api.AudioListener.forwardZ api.AudioListener.positionX api.AudioListener.positionY api.AudioListener.positionZ api.AudioListener.upX api.AudioListener.upY api.AudioListener.upZ api.AudioNode api.AudioNode.channelCount api.AudioNode.channelCountMode api.AudioNode.channelInterpretation api.AudioNode.connect api.AudioNode.context api.AudioNode.disconnect api.AudioNode.disconnect.destination_parameter api.AudioNode.disconnect.input_parameter api.AudioNode.numberOfInputs api.AudioNode.numberOfOutputs api.AudioParam api.AudioParam.automationRate api.AudioParam.cancelAndHoldAtTime api.AudioParam.cancelScheduledValues api.AudioParam.defaultValue api.AudioParam.exponentialRampToValueAtTime api.AudioParam.linearRampToValueAtTime api.AudioParam.maxValue api.AudioParam.minValue api.AudioParam.setTargetAtTime api.AudioParam.setValueAtTime api.AudioParam.setValueCurveAtTime api.AudioParam.value api.AudioParamMap api.AudioParamMap.@@iterator api.AudioParamMap.entries api.AudioParamMap.forEach api.AudioParamMap.get api.AudioParamMap.has api.AudioParamMap.keys api.AudioParamMap.size api.AudioParamMap.values api.AudioScheduledSourceNode api.AudioScheduledSourceNode.ended_event api.AudioScheduledSourceNode.start api.AudioScheduledSourceNode.stop api.AudioSinkInfo api.AudioSinkInfo.type api.BaseAudioContext api.BaseAudioContext.createAnalyser api.BaseAudioContext.createBiquadFilter api.BaseAudioContext.createBuffer api.BaseAudioContext.createBufferSource api.BaseAudioContext.createChannelMerger api.BaseAudioContext.createChannelSplitter api.BaseAudioContext.createConstantSource api.BaseAudioContext.createConvolver api.BaseAudioContext.createDelay api.BaseAudioContext.createDynamicsCompressor api.BaseAudioContext.createGain api.BaseAudioContext.createIIRFilter api.BaseAudioContext.createOscillator api.BaseAudioContext.createPanner api.BaseAudioContext.createPeriodicWave api.BaseAudioContext.createPeriodicWave.constraints_disableNormalization_parameter api.BaseAudioContext.createStereoPanner api.BaseAudioContext.createWaveShaper api.BaseAudioContext.currentTime api.BaseAudioContext.decodeAudioData api.BaseAudioContext.decodeAudioData.returns_promise api.BaseAudioContext.destination api.BaseAudioContext.listener api.BaseAudioContext.sampleRate api.BaseAudioContext.state api.BaseAudioContext.statechange_event api.BiquadFilterNode api.BiquadFilterNode.BiquadFilterNode api.BiquadFilterNode.Q api.BiquadFilterNode.detune api.BiquadFilterNode.frequency api.BiquadFilterNode.gain api.BiquadFilterNode.getFrequencyResponse api.BiquadFilterNode.type api.ChannelMergerNode api.ChannelMergerNode.ChannelMergerNode api.ChannelSplitterNode api.ChannelSplitterNode.ChannelSplitterNode api.ConstantSourceNode api.ConstantSourceNode.ConstantSourceNode api.ConstantSourceNode.offset api.ConvolverNode api.ConvolverNode.ConvolverNode api.ConvolverNode.buffer api.ConvolverNode.normalize api.DelayNode api.DelayNode.DelayNode api.DelayNode.delayTime api.DynamicsCompressorNode api.DynamicsCompressorNode.DynamicsCompressorNode api.DynamicsCompressorNode.attack api.DynamicsCompressorNode.knee api.DynamicsCompressorNode.ratio api.DynamicsCompressorNode.reduction api.DynamicsCompressorNode.release api.DynamicsCompressorNode.threshold api.GainNode api.GainNode.GainNode api.GainNode.gain api.IIRFilterNode api.IIRFilterNode.IIRFilterNode api.IIRFilterNode.getFrequencyResponse api.MediaElementAudioSourceNode api.MediaElementAudioSourceNode.MediaElementAudioSourceNode api.MediaElementAudioSourceNode.mediaElement api.MediaStreamAudioDestinationNode api.MediaStreamAudioDestinationNode.MediaStreamAudioDestinationNode api.MediaStreamAudioDestinationNode.stream api.MediaStreamAudioSourceNode api.MediaStreamAudioSourceNode.MediaStreamAudioSourceNode api.MediaStreamAudioSourceNode.mediaStream api.MediaStreamTrackAudioSourceNode api.MediaStreamTrackAudioSourceNode.MediaStreamTrackAudioSourceNode api.OscillatorNode api.OscillatorNode.OscillatorNode api.OscillatorNode.detune api.OscillatorNode.frequency api.OscillatorNode.setPeriodicWave api.OscillatorNode.type api.PannerNode api.PannerNode.PannerNode api.PannerNode.coneInnerAngle api.PannerNode.coneOuterAngle api.PannerNode.coneOuterGain api.PannerNode.distanceModel api.PannerNode.maxDistance api.PannerNode.orientationX api.PannerNode.orientationY api.PannerNode.orientationZ api.PannerNode.panningModel api.PannerNode.positionX api.PannerNode.positionY api.PannerNode.positionZ api.PannerNode.refDistance api.PannerNode.rolloffFactor api.PeriodicWave api.PeriodicWave.PeriodicWave api.StereoPannerNode api.StereoPannerNode.StereoPannerNode api.StereoPannerNode.pan api.WaveShaperNode api.WaveShaperNode.WaveShaperNode api.WaveShaperNode.curve api.WaveShaperNode.oversample
web-bluetooth	Web Bluetooth	The Web Bluetooth API enables selecting and communicating with nearby Bluetooth devices.	api.Bluetooth api.Bluetooth.getAvailability api.Bluetooth.getDevices api.Bluetooth.requestDevice api.Bluetooth.requestDevice.options_exclusionFilters_parameter api.Bluetooth.requestDevice.options_filter_manufacturerData_parameter api.BluetoothCharacteristicProperties api.BluetoothCharacteristicProperties.authenticatedSignedWrites api.BluetoothCharacteristicProperties.broadcast api.BluetoothCharacteristicProperties.indicate api.BluetoothCharacteristicProperties.notify api.BluetoothCharacteristicProperties.read api.BluetoothCharacteristicProperties.reliableWrite api.BluetoothCharacteristicProperties.writableAuxiliaries api.BluetoothCharacteristicProperties.write api.BluetoothCharacteristicProperties.writeWithoutResponse api.BluetoothDevice api.BluetoothDevice.gatt api.BluetoothDevice.gattserverdisconnected_event api.BluetoothDevice.id api.BluetoothDevice.name api.BluetoothRemoteGATTCharacteristic api.BluetoothRemoteGATTCharacteristic.characteristicvaluechanged_event api.BluetoothRemoteGATTCharacteristic.getDescriptor api.BluetoothRemoteGATTCharacteristic.getDescriptors api.BluetoothRemoteGATTCharacteristic.properties api.BluetoothRemoteGATTCharacteristic.readValue api.BluetoothRemoteGATTCharacteristic.service api.BluetoothRemoteGATTCharacteristic.startNotifications api.BluetoothRemoteGATTCharacteristic.stopNotifications api.BluetoothRemoteGATTCharacteristic.uuid api.BluetoothRemoteGATTCharacteristic.value api.BluetoothRemoteGATTCharacteristic.writeValueWithResponse api.BluetoothRemoteGATTCharacteristic.writeValueWithoutResponse api.BluetoothRemoteGATTDescriptor api.BluetoothRemoteGATTDescriptor.characteristic api.BluetoothRemoteGATTDescriptor.readValue api.BluetoothRemoteGATTDescriptor.uuid api.BluetoothRemoteGATTDescriptor.value api.BluetoothRemoteGATTDescriptor.writeValue api.BluetoothRemoteGATTServer api.BluetoothRemoteGATTServer.connect api.BluetoothRemoteGATTServer.connected api.BluetoothRemoteGATTServer.device api.BluetoothRemoteGATTServer.disconnect api.BluetoothRemoteGATTServer.getPrimaryService api.BluetoothRemoteGATTServer.getPrimaryServices api.BluetoothRemoteGATTService api.BluetoothRemoteGATTService.device api.BluetoothRemoteGATTService.getCharacteristic api.BluetoothRemoteGATTService.getCharacteristics api.BluetoothRemoteGATTService.isPrimary api.BluetoothRemoteGATTService.uuid api.BluetoothUUID api.BluetoothUUID.canonicalUUID_static api.BluetoothUUID.getCharacteristic_static api.BluetoothUUID.getDescriptor_static api.BluetoothUUID.getService_static api.Navigator.bluetooth html.elements.iframe.allow.bluetooth http.headers.Permissions-Policy.bluetooth
web-cryptography	Web Cryptography	The Web Cryptography API performs low-level cryptographic operations, such as encryption, decryption, and signature verification. Also known as the Web Crypto API.	api.Crypto api.Crypto.getRandomValues api.Crypto.randomUUID api.Crypto.subtle api.Crypto.subtle.secure_context_required api.CryptoKey api.CryptoKey.algorithm api.CryptoKey.extractable api.CryptoKey.type api.CryptoKey.usages api.SubtleCrypto api.SubtleCrypto.decrypt api.SubtleCrypto.deriveBits api.SubtleCrypto.deriveBits.x25519 api.SubtleCrypto.deriveKey api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_aes api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hkdf api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hmac api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_pbkdf2 api.SubtleCrypto.deriveKey.x25519 api.SubtleCrypto.digest api.SubtleCrypto.encrypt api.SubtleCrypto.exportKey api.SubtleCrypto.exportKey.ed25519 api.SubtleCrypto.exportKey.x25519 api.SubtleCrypto.generateKey api.SubtleCrypto.generateKey.ed25519 api.SubtleCrypto.generateKey.x25519 api.SubtleCrypto.importKey api.SubtleCrypto.importKey.ed25519 api.SubtleCrypto.importKey.x25519 api.SubtleCrypto.secure_context_required api.SubtleCrypto.sign api.SubtleCrypto.sign.ed25519 api.SubtleCrypto.unwrapKey api.SubtleCrypto.verify api.SubtleCrypto.verify.ed25519 api.SubtleCrypto.worker_support api.SubtleCrypto.wrapKey api.crypto api.crypto.worker_support
web-locks	Locks	The navigator.locks API coordinates work with shared resources through mutually exclusive ownership of a resource's name. Also known as web locks.	api.Lock api.Lock.mode api.Lock.name api.LockManager api.LockManager.query api.LockManager.request api.Navigator.locks api.WorkerNavigator.locks
web-midi	Web MIDI	The Web MIDI API enables selecting MIDI input and output devices and sending and receiving MIDI messages.	api.MIDIAccess api.MIDIAccess.inputs api.MIDIAccess.outputs api.MIDIAccess.statechange_event api.MIDIAccess.sysexEnabled api.MIDIConnectionEvent api.MIDIConnectionEvent.MIDIConnectionEvent api.MIDIConnectionEvent.port api.MIDIInput api.MIDIInput.midimessage_event api.MIDIInputMap api.MIDIInputMap.@@iterator api.MIDIInputMap.entries api.MIDIInputMap.forEach api.MIDIInputMap.get api.MIDIInputMap.has api.MIDIInputMap.keys api.MIDIInputMap.size api.MIDIInputMap.values api.MIDIMessageEvent api.MIDIMessageEvent.MIDIMessageEvent api.MIDIMessageEvent.data api.MIDIOutput api.MIDIOutput.clear api.MIDIOutput.send api.MIDIOutputMap api.MIDIOutputMap.@@iterator api.MIDIOutputMap.entries api.MIDIOutputMap.forEach api.MIDIOutputMap.get api.MIDIOutputMap.has api.MIDIOutputMap.keys api.MIDIOutputMap.size api.MIDIOutputMap.values api.MIDIPort api.MIDIPort.close api.MIDIPort.connection api.MIDIPort.id api.MIDIPort.manufacturer api.MIDIPort.name api.MIDIPort.open api.MIDIPort.state api.MIDIPort.statechange_event api.MIDIPort.type api.MIDIPort.version api.Navigator.requestMIDIAccess api.Navigator.requestMIDIAccess.secure_context_required api.Permissions.permission_midi html.elements.iframe.allow.midi http.headers.Permissions-Policy.midi
web-nfc	Web NFC	The NDEFReader API reads and writes messages to near-field communication (NFC) tags.	api.NDEFMessage api.NDEFMessage.NDEFMessage api.NDEFMessage.records api.NDEFMessage.secure_context_required api.NDEFReader api.NDEFReader.NDEFReader api.NDEFReader.makeReadOnly api.NDEFReader.reading_event api.NDEFReader.readingerror_event api.NDEFReader.scan api.NDEFReader.secure_context_required api.NDEFReader.write api.NDEFReadingEvent api.NDEFReadingEvent.NDEFReadingEvent api.NDEFReadingEvent.message api.NDEFReadingEvent.secure_context_required api.NDEFReadingEvent.serialNumber api.NDEFRecord api.NDEFRecord.NDEFRecord api.NDEFRecord.data api.NDEFRecord.encoding api.NDEFRecord.id api.NDEFRecord.lang api.NDEFRecord.mediaType api.NDEFRecord.recordType api.NDEFRecord.secure_context_required api.NDEFRecord.toRecords
web-otp	WebOTP	The OTPCredential API represents a one-time-password (OTP).	api.CredentialsContainer.get.otp_option api.OTPCredential api.OTPCredential.code html.elements.iframe.allow.otp-credentials http.headers.Permissions-Policy.otp-credentials
webauthn	Web authentication	The web authentication API allows you to create public key-based credentials and use them for authentication, such as when signing in. Also known as WebAuthn.	api.AuthenticatorAssertionResponse api.AuthenticatorAssertionResponse.authenticatorData api.AuthenticatorAssertionResponse.signature api.AuthenticatorAssertionResponse.userHandle api.AuthenticatorAttestationResponse api.AuthenticatorAttestationResponse.attestationObject api.AuthenticatorAttestationResponse.getTransports api.AuthenticatorResponse api.AuthenticatorResponse.clientDataJSON api.CredentialsContainer.create.publicKey_option api.CredentialsContainer.create.publicKey_option.attestation api.CredentialsContainer.create.publicKey_option.attestation.direct api.CredentialsContainer.create.publicKey_option.attestation.enterprise api.CredentialsContainer.create.publicKey_option.attestation.indirect api.CredentialsContainer.create.publicKey_option.attestation.none api.CredentialsContainer.create.publicKey_option.extensions api.CredentialsContainer.create.publicKey_option.extensions.appidExclude api.CredentialsContainer.create.publicKey_option.extensions.credProps api.CredentialsContainer.create.publicKey_option.extensions.credProtect api.CredentialsContainer.create.publicKey_option.extensions.largeBlob api.CredentialsContainer.create.publicKey_option.extensions.minPinLength api.CredentialsContainer.create.publicKey_option.extensions.payment api.CredentialsContainer.create.publicKey_option.requireResidentKey api.CredentialsContainer.create.publicKey_option.residentKey api.CredentialsContainer.get.publicKey_option api.CredentialsContainer.get.publicKey_option.extensions api.CredentialsContainer.get.publicKey_option.extensions.appid api.CredentialsContainer.get.publicKey_option.extensions.largeBlob api.PublicKeyCredential api.PublicKeyCredential.authenticatorAttachment api.PublicKeyCredential.getClientCapabilities_static api.PublicKeyCredential.getClientExtensionResults api.PublicKeyCredential.isConditionalMediationAvailable_static api.PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable_static api.PublicKeyCredential.parseCreationOptionsFromJSON_static api.PublicKeyCredential.parseRequestOptionsFromJSON_static api.PublicKeyCredential.rawId api.PublicKeyCredential.response api.PublicKeyCredential.toJSON html.elements.iframe.allow.publickey-credentials-create html.elements.iframe.allow.publickey-credentials-get http.headers.Permissions-Policy.publickey-credentials-create http.headers.Permissions-Policy.publickey-credentials-get
webauthn-public-key-easy	Web authentication easy public key access	The getAuthenticatorData(), getPublicKey(), and getPublicKeyAlgorithm() methods of AuthenticatorAttestationResponse access credential data inside attestationObject without the need to parse it.	api.AuthenticatorAttestationResponse.getAuthenticatorData api.AuthenticatorAttestationResponse.getPublicKey api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm
webcodecs	WebCodecs	The WebCodecs API provides low-level access to individual video frames and chunks of audio samples, for full control over the way media is processed.	api.AudioData api.AudioData.AudioData api.AudioData.allocationSize api.AudioData.clone api.AudioData.close api.AudioData.copyTo api.AudioData.duration api.AudioData.format api.AudioData.numberOfChannels api.AudioData.numberOfFrames api.AudioData.sampleRate api.AudioData.timestamp api.AudioDecoder api.AudioDecoder.AudioDecoder api.AudioDecoder.close api.AudioDecoder.configure api.AudioDecoder.decode api.AudioDecoder.decodeQueueSize api.AudioDecoder.dequeue_event api.AudioDecoder.flush api.AudioDecoder.isConfigSupported_static api.AudioDecoder.reset api.AudioDecoder.state api.AudioEncoder api.AudioEncoder.AudioEncoder api.AudioEncoder.close api.AudioEncoder.configure api.AudioEncoder.configure.bitrateMode api.AudioEncoder.configure.opus api.AudioEncoder.configure.opus.opus_application api.AudioEncoder.configure.opus.opus_signal api.AudioEncoder.dequeue_event api.AudioEncoder.encode api.AudioEncoder.encodeQueueSize api.AudioEncoder.flush api.AudioEncoder.isConfigSupported_static api.AudioEncoder.reset api.AudioEncoder.state api.EncodedAudioChunk api.EncodedAudioChunk.EncodedAudioChunk api.EncodedAudioChunk.byteLength api.EncodedAudioChunk.copyTo api.EncodedAudioChunk.duration api.EncodedAudioChunk.timestamp api.EncodedAudioChunk.type api.EncodedVideoChunk api.EncodedVideoChunk.EncodedVideoChunk api.EncodedVideoChunk.byteLength api.EncodedVideoChunk.copyTo api.EncodedVideoChunk.duration api.EncodedVideoChunk.timestamp api.EncodedVideoChunk.type api.ImageDecoder api.ImageDecoder.ImageDecoder api.ImageDecoder.close api.ImageDecoder.complete api.ImageDecoder.completed api.ImageDecoder.decode api.ImageDecoder.isTypeSupported_static api.ImageDecoder.reset api.ImageDecoder.tracks api.ImageDecoder.type api.ImageTrack api.ImageTrack.animated api.ImageTrack.frameCount api.ImageTrack.repetitionCount api.ImageTrack.selected api.ImageTrackList api.ImageTrackList.length api.ImageTrackList.ready api.ImageTrackList.selectedIndex api.ImageTrackList.selectedTrack api.VideoColorSpace api.VideoColorSpace.VideoColorSpace api.VideoColorSpace.fullRange api.VideoColorSpace.matrix api.VideoColorSpace.primaries api.VideoColorSpace.toJSON api.VideoColorSpace.transfer api.VideoDecoder api.VideoDecoder.VideoDecoder api.VideoDecoder.close api.VideoDecoder.configure api.VideoDecoder.decode api.VideoDecoder.decodeQueueSize api.VideoDecoder.dequeue_event api.VideoDecoder.flush api.VideoDecoder.isConfigSupported_static api.VideoDecoder.reset api.VideoDecoder.state api.VideoEncoder api.VideoEncoder.VideoEncoder api.VideoEncoder.close api.VideoEncoder.configure api.VideoEncoder.dequeue_event api.VideoEncoder.encode api.VideoEncoder.encodeQueueSize api.VideoEncoder.flush api.VideoEncoder.isConfigSupported_static api.VideoEncoder.reset api.VideoEncoder.state api.VideoFrame api.VideoFrame.VideoFrame api.VideoFrame.allocationSize api.VideoFrame.clone api.VideoFrame.close api.VideoFrame.codedHeight api.VideoFrame.codedRect api.VideoFrame.codedWidth api.VideoFrame.colorSpace api.VideoFrame.copyTo api.VideoFrame.displayHeight api.VideoFrame.displayWidth api.VideoFrame.duration api.VideoFrame.format api.VideoFrame.timestamp api.VideoFrame.visibleRect
webdriver	WebDriver	The WebDriver interface allows out-of-process programs to inspect and control browsers to, for example, run tests of web applications. Also known as WebDriver classic.	api.Navigator.webdriver webdriver.commands.AcceptAlert webdriver.commands.AddCookie webdriver.commands.Back webdriver.commands.CloseWindow webdriver.commands.DeleteAllCookies webdriver.commands.DeleteCookie webdriver.commands.DeleteSession webdriver.commands.DismissAlert webdriver.commands.ElementClear webdriver.commands.ElementClick webdriver.commands.ElementSendKeys webdriver.commands.ExecuteAsyncScript webdriver.commands.ExecuteScript webdriver.commands.FindElement webdriver.commands.FindElementFromElement webdriver.commands.FindElements webdriver.commands.FindElementsFromElement webdriver.commands.Forward webdriver.commands.FullscreenWindow webdriver.commands.GetActiveElement webdriver.commands.GetAlertText webdriver.commands.GetAllCookies webdriver.commands.GetCurrentURL webdriver.commands.GetElementAttribute webdriver.commands.GetElementCSSValue webdriver.commands.GetElementProperty webdriver.commands.GetElementRect webdriver.commands.GetElementTagName webdriver.commands.GetElementText webdriver.commands.GetNamedCookie webdriver.commands.GetPageSource webdriver.commands.GetTimeouts webdriver.commands.GetTitle webdriver.commands.GetWindowHandle webdriver.commands.GetWindowHandles webdriver.commands.GetWindowRect webdriver.commands.IsElementEnabled webdriver.commands.IsElementSelected webdriver.commands.MaximizeWindow webdriver.commands.MinimizeWindow webdriver.commands.NavigateTo webdriver.commands.NewSession webdriver.commands.NewWindow webdriver.commands.PerformActions webdriver.commands.Refresh webdriver.commands.ReleaseActions webdriver.commands.SendAlertText webdriver.commands.SetTimeouts webdriver.commands.SetWindowRect webdriver.commands.Status webdriver.commands.SwitchToFrame webdriver.commands.SwitchToParentFrame webdriver.commands.SwitchToWindow webdriver.commands.TakeElementScreenshot webdriver.commands.TakeScreenshot
webdriver-bidi	WebDriver BiDi	WebDriver BiDi is a bidirectional protocol that allows a WebDriver client and a browser to communicate with each other.
webgl	WebGL	The WebGLRenderingContext API is the "webgl" rendering context for the <canvas> element. It represents a space for drawing two- and three-dimensional graphics and animations.	api.HTMLCanvasElement.getContext.webgl_context.options_alpha_parameter api.HTMLCanvasElement.getContext.webgl_context.options_failIfMajorPerformanceCaveat_parameter api.HTMLCanvasElement.getContext.webgl_context.options_powerPreference_parameter api.HTMLCanvasElement.webglcontextcreationerror_event api.HTMLCanvasElement.webglcontextlost_event api.HTMLCanvasElement.webglcontextrestored_event api.WebGLActiveInfo api.WebGLActiveInfo.name api.WebGLActiveInfo.size api.WebGLActiveInfo.type api.WebGLActiveInfo.worker_support api.WebGLBuffer api.WebGLBuffer.worker_support api.WebGLContextEvent api.WebGLContextEvent.WebGLContextEvent api.WebGLContextEvent.statusMessage api.WebGLContextEvent.worker_support api.WebGLFramebuffer api.WebGLFramebuffer.worker_support api.WebGLObject api.WebGLProgram api.WebGLProgram.worker_support api.WebGLRenderbuffer api.WebGLRenderbuffer.worker_support api.WebGLRenderingContext api.WebGLRenderingContext.activeTexture api.WebGLRenderingContext.attachShader api.WebGLRenderingContext.bindAttribLocation api.WebGLRenderingContext.bindBuffer api.WebGLRenderingContext.bindFramebuffer api.WebGLRenderingContext.bindRenderbuffer api.WebGLRenderingContext.bindTexture api.WebGLRenderingContext.blendColor api.WebGLRenderingContext.blendEquation api.WebGLRenderingContext.blendEquationSeparate api.WebGLRenderingContext.blendFunc api.WebGLRenderingContext.blendFuncSeparate api.WebGLRenderingContext.bufferData api.WebGLRenderingContext.bufferSubData api.WebGLRenderingContext.canvas api.WebGLRenderingContext.checkFramebufferStatus api.WebGLRenderingContext.clear api.WebGLRenderingContext.clearColor api.WebGLRenderingContext.clearDepth api.WebGLRenderingContext.clearStencil api.WebGLRenderingContext.colorMask api.WebGLRenderingContext.compileShader api.WebGLRenderingContext.compressedTexImage2D api.WebGLRenderingContext.compressedTexSubImage2D api.WebGLRenderingContext.copyTexImage2D api.WebGLRenderingContext.copyTexSubImage2D api.WebGLRenderingContext.createBuffer api.WebGLRenderingContext.createFramebuffer api.WebGLRenderingContext.createProgram api.WebGLRenderingContext.createRenderbuffer api.WebGLRenderingContext.createShader api.WebGLRenderingContext.createTexture api.WebGLRenderingContext.cullFace api.WebGLRenderingContext.deleteBuffer api.WebGLRenderingContext.deleteFramebuffer api.WebGLRenderingContext.deleteProgram api.WebGLRenderingContext.deleteRenderbuffer api.WebGLRenderingContext.deleteShader api.WebGLRenderingContext.deleteTexture api.WebGLRenderingContext.depthFunc api.WebGLRenderingContext.depthMask api.WebGLRenderingContext.depthRange api.WebGLRenderingContext.detachShader api.WebGLRenderingContext.disable api.WebGLRenderingContext.disableVertexAttribArray api.WebGLRenderingContext.drawArrays api.WebGLRenderingContext.drawElements api.WebGLRenderingContext.drawingBufferFormat api.WebGLRenderingContext.drawingBufferHeight api.WebGLRenderingContext.drawingBufferStorage api.WebGLRenderingContext.drawingBufferWidth api.WebGLRenderingContext.enable api.WebGLRenderingContext.enableVertexAttribArray api.WebGLRenderingContext.finish api.WebGLRenderingContext.flush api.WebGLRenderingContext.framebufferRenderbuffer api.WebGLRenderingContext.framebufferTexture2D api.WebGLRenderingContext.frontFace api.WebGLRenderingContext.generateMipmap api.WebGLRenderingContext.getActiveAttrib api.WebGLRenderingContext.getActiveUniform api.WebGLRenderingContext.getAttachedShaders api.WebGLRenderingContext.getAttribLocation api.WebGLRenderingContext.getBufferParameter api.WebGLRenderingContext.getContextAttributes api.WebGLRenderingContext.getError api.WebGLRenderingContext.getExtension api.WebGLRenderingContext.getFramebufferAttachmentParameter api.WebGLRenderingContext.getParameter api.WebGLRenderingContext.getProgramInfoLog api.WebGLRenderingContext.getProgramParameter api.WebGLRenderingContext.getRenderbufferParameter api.WebGLRenderingContext.getShaderInfoLog api.WebGLRenderingContext.getShaderParameter api.WebGLRenderingContext.getShaderPrecisionFormat api.WebGLRenderingContext.getShaderSource api.WebGLRenderingContext.getSupportedExtensions api.WebGLRenderingContext.getTexParameter api.WebGLRenderingContext.getUniform api.WebGLRenderingContext.getUniformLocation api.WebGLRenderingContext.getVertexAttrib api.WebGLRenderingContext.getVertexAttribOffset api.WebGLRenderingContext.hint api.WebGLRenderingContext.isBuffer api.WebGLRenderingContext.isContextLost api.WebGLRenderingContext.isEnabled api.WebGLRenderingContext.isFramebuffer api.WebGLRenderingContext.isProgram api.WebGLRenderingContext.isRenderbuffer api.WebGLRenderingContext.isShader api.WebGLRenderingContext.isTexture api.WebGLRenderingContext.lineWidth api.WebGLRenderingContext.linkProgram api.WebGLRenderingContext.pixelStorei api.WebGLRenderingContext.polygonOffset api.WebGLRenderingContext.readPixels api.WebGLRenderingContext.renderbufferStorage api.WebGLRenderingContext.sampleCoverage api.WebGLRenderingContext.scissor api.WebGLRenderingContext.shaderSource api.WebGLRenderingContext.stencilFunc api.WebGLRenderingContext.stencilFuncSeparate api.WebGLRenderingContext.stencilMask api.WebGLRenderingContext.stencilMaskSeparate api.WebGLRenderingContext.stencilOp api.WebGLRenderingContext.stencilOpSeparate api.WebGLRenderingContext.texImage2D api.WebGLRenderingContext.texParameterf api.WebGLRenderingContext.texParameteri api.WebGLRenderingContext.texSubImage2D api.WebGLRenderingContext.uniform1f api.WebGLRenderingContext.uniform1fv api.WebGLRenderingContext.uniform1i api.WebGLRenderingContext.uniform1iv api.WebGLRenderingContext.uniform2f api.WebGLRenderingContext.uniform2fv api.WebGLRenderingContext.uniform2i api.WebGLRenderingContext.uniform2iv api.WebGLRenderingContext.uniform3f api.WebGLRenderingContext.uniform3fv api.WebGLRenderingContext.uniform3i api.WebGLRenderingContext.uniform3iv api.WebGLRenderingContext.uniform4f api.WebGLRenderingContext.uniform4fv api.WebGLRenderingContext.uniform4i api.WebGLRenderingContext.uniform4iv api.WebGLRenderingContext.uniformMatrix2fv api.WebGLRenderingContext.uniformMatrix3fv api.WebGLRenderingContext.uniformMatrix4fv api.WebGLRenderingContext.useProgram api.WebGLRenderingContext.validateProgram api.WebGLRenderingContext.vertexAttrib1f api.WebGLRenderingContext.vertexAttrib1fv api.WebGLRenderingContext.vertexAttrib2f api.WebGLRenderingContext.vertexAttrib2fv api.WebGLRenderingContext.vertexAttrib3f api.WebGLRenderingContext.vertexAttrib3fv api.WebGLRenderingContext.vertexAttrib4f api.WebGLRenderingContext.vertexAttrib4fv api.WebGLRenderingContext.vertexAttribPointer api.WebGLRenderingContext.viewport api.WebGLRenderingContext.worker_support api.WebGLShader api.WebGLShader.worker_support api.WebGLShaderPrecisionFormat api.WebGLShaderPrecisionFormat.precision api.WebGLShaderPrecisionFormat.rangeMax api.WebGLShaderPrecisionFormat.rangeMin api.WebGLShaderPrecisionFormat.worker_support api.WebGLTexture api.WebGLTexture.worker_support api.WebGLUniformLocation api.WebGLUniformLocation.worker_support
webgl-color-buffer-float	WEBGL_color_buffer_float WebGL extension	The WEBGL_color_buffer_float extension for WebGL 1.0 contexts adds the 32-bit floating-point type RGBA32F as a color-renderable format.	api.WEBGL_color_buffer_float
webgl-color-management	Color management for WebGL	The drawingBufferColorSpace and unpackColorSpace properties of WebGLRenderingContext sets the color representation for the buffer and imported textures, such as "srgb" or "display-p3".	api.WebGLRenderingContext.drawingBufferColorSpace api.WebGLRenderingContext.unpackColorSpace
webgl-compressed-texture-astc	WEBGL_compressed_texture_astc WebGL extension	The WEBGL_compressed_texture_astc extension for WebGL 1.0 and 2.0 contexts adds the Adaptive Scalable Texture Compression format to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_astc api.WEBGL_compressed_texture_astc.getSupportedProfiles
webgl-compressed-texture-etc	WEBGL_compressed_texture_etc WebGL extension	The WEBGL_compressed_texture_etc extension for WebGL 1.0 and 2.0 contexts adds many ETC2 and EAC compressed texture formats to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_etc
webgl-compressed-texture-etc1	WEBGL_compressed_texture_etc1 WebGL extension	The WEBGL_compressed_texture_etc1 extension for WebGL 1.0 and 2.0 contexts adds the ETC1 compressed texture format to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_etc1
webgl-compressed-texture-pvrtc	WEBGL_compressed_texture_pvrtc WebGL extension	The WEBGL_compressed_texture_pvrtc extension for WebGL 1.0 and 2.0 contexts adds PVRTC compressed texture formats to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_pvrtc
webgl-compressed-texture-s3tc	WEBGL_compressed_texture_s3tc WebGL extension	The WEBGL_compressed_texture_s3tc extension for WebGL 1.0 and 2.0 contexts adds S3TC compressed texture formats to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_s3tc
webgl-compressed-texture-s3tc-srgb	WEBGL_compressed_texture_s3tc_srgb WebGL extension	The WEBGL_compressed_texture_s3tc_srgb extension for WebGL 1.0 and 2.0 contexts adds S3TC compressed texture formats for the sRGB colorspace to compressedTexImage2D() and compressedTexSubImage2D().	api.WEBGL_compressed_texture_s3tc_srgb
webgl-debug-renderer-info	WEBGL_debug_renderer_info WebGL extension	The WEBGL_debug_renderer_info extension for WebGL 1.0 and 2.0 contexts exposes information about the graphics driver for debugging purposes.	api.WEBGL_debug_renderer_info
webgl-debug-shaders	WEBGL_debug_shaders WebGL extension	The WEBGL_debug_shaders extension for WebGL 1.0 and 2.0 contexts adds the getTranslatedShaderSource() method to debug shaders from privileged contexts.	api.WEBGL_debug_shaders api.WEBGL_debug_shaders.getTranslatedShaderSource
webgl-depth-texture	WEBGL_depth_texture WebGL extension	The WEBGL_depth_texture extension for WebGL 1.0 contexts defines 2D depth and depth-stencil textures.	api.WEBGL_depth_texture
webgl-desynchronized	Desynchronized WebGL canvas	The optional desynchronized parameter of a canvas's getContext() method permits the browser to draw a WebGL canvas independently of the event loop. This can reduce drawing latency.	api.HTMLCanvasElement.getContext.webgl_context.options_desynchronized_parameter
webgl-draw-buffers	WEBGL_draw_buffers WebGL extension	The WEBGL_draw_buffers extension for WebGL 1.0 contexts enables a fragment shader to write to several textures, which is useful for deferred shading, for example.	api.WEBGL_draw_buffers api.WEBGL_draw_buffers.drawBuffersWEBGL
webgl-lose-context	WEBGL_lose_context WebGL extension	The WEBGL_lose_context extension for WebGL 1.0 and 2.0 contexts simulates losing and restoring a WebGLRenderingContext or WebGL2RenderingContext.	api.WEBGL_lose_context api.WEBGL_lose_context.loseContext api.WEBGL_lose_context.restoreContext
webgl-multi-draw	WEBGL_multi_draw WebGL extension	The WEBGL_multi_draw extension for WebGL 1.0 and 2.0 contexts renders more than one primitive with a single function call.	api.WEBGL_multi_draw api.WEBGL_multi_draw.multiDrawArraysInstancedWEBGL api.WEBGL_multi_draw.multiDrawArraysWEBGL api.WEBGL_multi_draw.multiDrawElementsInstancedWEBGL api.WEBGL_multi_draw.multiDrawElementsWEBGL
webgl-oes-draw-buffers-indexed	OES_draw_buffers_indexed WebGL extension	The OES_draw_buffers_indexed extension for WebGL 2.0 contexts allows you to control blending on a per-color basis when writing to multiple color buffers simultaneously.	api.OES_draw_buffers_indexed api.OES_draw_buffers_indexed.blendEquationSeparateiOES api.OES_draw_buffers_indexed.blendEquationiOES api.OES_draw_buffers_indexed.blendFuncSeparateiOES api.OES_draw_buffers_indexed.blendFunciOES api.OES_draw_buffers_indexed.colorMaskiOES api.OES_draw_buffers_indexed.disableiOES api.OES_draw_buffers_indexed.enableiOES
webgl-sab	SharedArrayBuffer in WebGL	SharedArrayBuffer objects can be used in WebGL APIs that previously only worked with ArrayBuffer objects.	api.WebGL2RenderingContext.bufferData.srcData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.bufferSubData.srcData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.clearBufferfv.values_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.clearBufferiv.values_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.clearBufferuiv.values_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.compressedTexImage2D.pixels_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.compressedTexImage3D.pixels_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.compressedTexSubImage2D.srcData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.getBufferSubData.dstData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.readPixels.pixels_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.texImage3D.srcData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.texSubImage3D.srcData_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix2fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix2x3fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix2x4fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix3fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix3x2fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix3x4fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix4fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix4x2fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.uniformMatrix4x3fv.data_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttrib1fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttrib2fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttrib3fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttrib4fv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttribI4iv.value_param_accepts_SharedArrayBuffer api.WebGL2RenderingContext.vertexAttribI4uiv.value_param_accepts_SharedArrayBuffer api.WebGLRenderingContext.compressedTexImage2D.pixels_param_accepts_SharedArrayBuffer api.WebGLRenderingContext.vertexAttrib1fv.value_param_accepts_SharedArrayBuffer api.WebGLRenderingContext.vertexAttrib2fv.value_param_accepts_SharedArrayBuffer api.WebGLRenderingContext.vertexAttrib3fv.value_param_accepts_SharedArrayBuffer api.WebGLRenderingContext.vertexAttrib4fv.value_param_accepts_SharedArrayBuffer
webgl2	WebGL2	The WebGL2RenderingContext API is the "webgl2" rendering context for the <canvas> element. It represents a space for drawing two- and three-dimensional graphics and animations. It corresponds to OpenGL ES 3.0.	api.HTMLCanvasElement.getContext.webgl2_context.options_alpha_parameter api.HTMLCanvasElement.getContext.webgl2_context.options_failIfMajorPerformanceCaveat_parameter api.HTMLCanvasElement.getContext.webgl2_context.options_powerPreference_parameter api.WebGL2RenderingContext api.WebGL2RenderingContext.activeTexture api.WebGL2RenderingContext.attachShader api.WebGL2RenderingContext.beginQuery api.WebGL2RenderingContext.beginTransformFeedback api.WebGL2RenderingContext.bindAttribLocation api.WebGL2RenderingContext.bindBuffer api.WebGL2RenderingContext.bindBufferBase api.WebGL2RenderingContext.bindBufferRange api.WebGL2RenderingContext.bindFramebuffer api.WebGL2RenderingContext.bindRenderbuffer api.WebGL2RenderingContext.bindSampler api.WebGL2RenderingContext.bindTexture api.WebGL2RenderingContext.bindTransformFeedback api.WebGL2RenderingContext.bindVertexArray api.WebGL2RenderingContext.blendColor api.WebGL2RenderingContext.blendEquation api.WebGL2RenderingContext.blendEquationSeparate api.WebGL2RenderingContext.blendFunc api.WebGL2RenderingContext.blendFuncSeparate api.WebGL2RenderingContext.blitFramebuffer api.WebGL2RenderingContext.bufferData api.WebGL2RenderingContext.bufferSubData api.WebGL2RenderingContext.canvas api.WebGL2RenderingContext.checkFramebufferStatus api.WebGL2RenderingContext.clear api.WebGL2RenderingContext.clearBufferfi api.WebGL2RenderingContext.clearBufferfv api.WebGL2RenderingContext.clearBufferiv api.WebGL2RenderingContext.clearBufferuiv api.WebGL2RenderingContext.clearColor api.WebGL2RenderingContext.clearDepth api.WebGL2RenderingContext.clearStencil api.WebGL2RenderingContext.clientWaitSync api.WebGL2RenderingContext.colorMask api.WebGL2RenderingContext.compileShader api.WebGL2RenderingContext.compressedTexImage2D api.WebGL2RenderingContext.compressedTexImage3D api.WebGL2RenderingContext.compressedTexSubImage2D api.WebGL2RenderingContext.compressedTexSubImage3D api.WebGL2RenderingContext.copyBufferSubData api.WebGL2RenderingContext.copyTexImage2D api.WebGL2RenderingContext.copyTexSubImage2D api.WebGL2RenderingContext.copyTexSubImage3D api.WebGL2RenderingContext.createBuffer api.WebGL2RenderingContext.createFramebuffer api.WebGL2RenderingContext.createProgram api.WebGL2RenderingContext.createQuery api.WebGL2RenderingContext.createRenderbuffer api.WebGL2RenderingContext.createSampler api.WebGL2RenderingContext.createShader api.WebGL2RenderingContext.createTexture api.WebGL2RenderingContext.createTransformFeedback api.WebGL2RenderingContext.createVertexArray api.WebGL2RenderingContext.cullFace api.WebGL2RenderingContext.deleteBuffer api.WebGL2RenderingContext.deleteFramebuffer api.WebGL2RenderingContext.deleteProgram api.WebGL2RenderingContext.deleteQuery api.WebGL2RenderingContext.deleteRenderbuffer api.WebGL2RenderingContext.deleteSampler api.WebGL2RenderingContext.deleteShader api.WebGL2RenderingContext.deleteSync api.WebGL2RenderingContext.deleteTexture api.WebGL2RenderingContext.deleteTransformFeedback api.WebGL2RenderingContext.deleteVertexArray api.WebGL2RenderingContext.depthFunc api.WebGL2RenderingContext.depthMask api.WebGL2RenderingContext.depthRange api.WebGL2RenderingContext.detachShader api.WebGL2RenderingContext.disable api.WebGL2RenderingContext.disableVertexAttribArray api.WebGL2RenderingContext.drawArrays api.WebGL2RenderingContext.drawArraysInstanced api.WebGL2RenderingContext.drawBuffers api.WebGL2RenderingContext.drawElements api.WebGL2RenderingContext.drawElementsInstanced api.WebGL2RenderingContext.drawRangeElements api.WebGL2RenderingContext.drawingBufferFormat api.WebGL2RenderingContext.drawingBufferHeight api.WebGL2RenderingContext.drawingBufferStorage api.WebGL2RenderingContext.drawingBufferWidth api.WebGL2RenderingContext.enable api.WebGL2RenderingContext.enableVertexAttribArray api.WebGL2RenderingContext.endQuery api.WebGL2RenderingContext.endTransformFeedback api.WebGL2RenderingContext.fenceSync api.WebGL2RenderingContext.finish api.WebGL2RenderingContext.flush api.WebGL2RenderingContext.framebufferRenderbuffer api.WebGL2RenderingContext.framebufferTexture2D api.WebGL2RenderingContext.framebufferTextureLayer api.WebGL2RenderingContext.frontFace api.WebGL2RenderingContext.generateMipmap api.WebGL2RenderingContext.getActiveAttrib api.WebGL2RenderingContext.getActiveUniform api.WebGL2RenderingContext.getActiveUniformBlockName api.WebGL2RenderingContext.getActiveUniformBlockParameter api.WebGL2RenderingContext.getActiveUniforms api.WebGL2RenderingContext.getAttachedShaders api.WebGL2RenderingContext.getAttribLocation api.WebGL2RenderingContext.getBufferParameter api.WebGL2RenderingContext.getBufferSubData api.WebGL2RenderingContext.getContextAttributes api.WebGL2RenderingContext.getError api.WebGL2RenderingContext.getExtension api.WebGL2RenderingContext.getFragDataLocation api.WebGL2RenderingContext.getFramebufferAttachmentParameter api.WebGL2RenderingContext.getIndexedParameter api.WebGL2RenderingContext.getInternalformatParameter api.WebGL2RenderingContext.getParameter api.WebGL2RenderingContext.getProgramInfoLog api.WebGL2RenderingContext.getProgramParameter api.WebGL2RenderingContext.getQuery api.WebGL2RenderingContext.getQueryParameter api.WebGL2RenderingContext.getRenderbufferParameter api.WebGL2RenderingContext.getSamplerParameter api.WebGL2RenderingContext.getShaderInfoLog api.WebGL2RenderingContext.getShaderParameter api.WebGL2RenderingContext.getShaderPrecisionFormat api.WebGL2RenderingContext.getShaderSource api.WebGL2RenderingContext.getSupportedExtensions api.WebGL2RenderingContext.getSyncParameter api.WebGL2RenderingContext.getTexParameter api.WebGL2RenderingContext.getTransformFeedbackVarying api.WebGL2RenderingContext.getUniform api.WebGL2RenderingContext.getUniformBlockIndex api.WebGL2RenderingContext.getUniformIndices api.WebGL2RenderingContext.getUniformLocation api.WebGL2RenderingContext.getVertexAttrib api.WebGL2RenderingContext.getVertexAttribOffset api.WebGL2RenderingContext.hint api.WebGL2RenderingContext.invalidateFramebuffer api.WebGL2RenderingContext.invalidateSubFramebuffer api.WebGL2RenderingContext.isBuffer api.WebGL2RenderingContext.isContextLost api.WebGL2RenderingContext.isEnabled api.WebGL2RenderingContext.isFramebuffer api.WebGL2RenderingContext.isProgram api.WebGL2RenderingContext.isQuery api.WebGL2RenderingContext.isRenderbuffer api.WebGL2RenderingContext.isSampler api.WebGL2RenderingContext.isShader api.WebGL2RenderingContext.isSync api.WebGL2RenderingContext.isTexture api.WebGL2RenderingContext.isTransformFeedback api.WebGL2RenderingContext.isVertexArray api.WebGL2RenderingContext.lineWidth api.WebGL2RenderingContext.linkProgram api.WebGL2RenderingContext.pauseTransformFeedback api.WebGL2RenderingContext.pixelStorei api.WebGL2RenderingContext.polygonOffset api.WebGL2RenderingContext.readBuffer api.WebGL2RenderingContext.readPixels api.WebGL2RenderingContext.renderbufferStorage api.WebGL2RenderingContext.renderbufferStorageMultisample api.WebGL2RenderingContext.resumeTransformFeedback api.WebGL2RenderingContext.sampleCoverage api.WebGL2RenderingContext.samplerParameterf api.WebGL2RenderingContext.samplerParameteri api.WebGL2RenderingContext.scissor api.WebGL2RenderingContext.shaderSource api.WebGL2RenderingContext.stencilFunc api.WebGL2RenderingContext.stencilFuncSeparate api.WebGL2RenderingContext.stencilMask api.WebGL2RenderingContext.stencilMaskSeparate api.WebGL2RenderingContext.stencilOp api.WebGL2RenderingContext.stencilOpSeparate api.WebGL2RenderingContext.texImage2D api.WebGL2RenderingContext.texImage3D api.WebGL2RenderingContext.texParameterf api.WebGL2RenderingContext.texParameteri api.WebGL2RenderingContext.texStorage2D api.WebGL2RenderingContext.texStorage3D api.WebGL2RenderingContext.texSubImage2D api.WebGL2RenderingContext.texSubImage3D api.WebGL2RenderingContext.transformFeedbackVaryings api.WebGL2RenderingContext.uniform1f api.WebGL2RenderingContext.uniform1fv api.WebGL2RenderingContext.uniform1i api.WebGL2RenderingContext.uniform1iv api.WebGL2RenderingContext.uniform1ui api.WebGL2RenderingContext.uniform1uiv api.WebGL2RenderingContext.uniform2f api.WebGL2RenderingContext.uniform2fv api.WebGL2RenderingContext.uniform2i api.WebGL2RenderingContext.uniform2iv api.WebGL2RenderingContext.uniform2ui api.WebGL2RenderingContext.uniform2uiv api.WebGL2RenderingContext.uniform3f api.WebGL2RenderingContext.uniform3fv api.WebGL2RenderingContext.uniform3i api.WebGL2RenderingContext.uniform3iv api.WebGL2RenderingContext.uniform3ui api.WebGL2RenderingContext.uniform3uiv api.WebGL2RenderingContext.uniform4f api.WebGL2RenderingContext.uniform4fv api.WebGL2RenderingContext.uniform4i api.WebGL2RenderingContext.uniform4iv api.WebGL2RenderingContext.uniform4ui api.WebGL2RenderingContext.uniform4uiv api.WebGL2RenderingContext.uniformBlockBinding api.WebGL2RenderingContext.uniformMatrix2fv api.WebGL2RenderingContext.uniformMatrix2x3fv api.WebGL2RenderingContext.uniformMatrix2x4fv api.WebGL2RenderingContext.uniformMatrix3fv api.WebGL2RenderingContext.uniformMatrix3x2fv api.WebGL2RenderingContext.uniformMatrix3x4fv api.WebGL2RenderingContext.uniformMatrix4fv api.WebGL2RenderingContext.uniformMatrix4x2fv api.WebGL2RenderingContext.uniformMatrix4x3fv api.WebGL2RenderingContext.useProgram api.WebGL2RenderingContext.validateProgram api.WebGL2RenderingContext.vertexAttrib1f api.WebGL2RenderingContext.vertexAttrib1fv api.WebGL2RenderingContext.vertexAttrib2f api.WebGL2RenderingContext.vertexAttrib2fv api.WebGL2RenderingContext.vertexAttrib3f api.WebGL2RenderingContext.vertexAttrib3fv api.WebGL2RenderingContext.vertexAttrib4f api.WebGL2RenderingContext.vertexAttrib4fv api.WebGL2RenderingContext.vertexAttribDivisor api.WebGL2RenderingContext.vertexAttribI4i api.WebGL2RenderingContext.vertexAttribI4iv api.WebGL2RenderingContext.vertexAttribI4ui api.WebGL2RenderingContext.vertexAttribI4uiv api.WebGL2RenderingContext.vertexAttribIPointer api.WebGL2RenderingContext.vertexAttribPointer api.WebGL2RenderingContext.viewport api.WebGL2RenderingContext.waitSync api.WebGLQuery api.WebGLSampler api.WebGLSync api.WebGLTransformFeedback api.WebGLVertexArrayObject
webgl2-color-management	Color management for WebGL2	The drawingBufferColorSpace and unpackColorSpace properties of WebGL2RenderingContext sets the color representation for the buffer and imported textures, such as "srgb" or "display-p3".	api.WebGL2RenderingContext.drawingBufferColorSpace api.WebGL2RenderingContext.unpackColorSpace
webgl2-desynchronized	Desynchronized WebGL2 canvas	The optional desynchronized parameter of a canvas's getContext() method permits the browser to draw a WebGL2 canvas independently of the event loop. This can reduce drawing latency.	api.HTMLCanvasElement.getContext.webgl2_context.options_desynchronized_parameter
webgpu	WebGPU	The navigator.gpu API performs operations such as rendering and computation on dedicated graphics hardware (also known as a Graphics Processing Unit).	api.GPU api.GPU.getPreferredCanvasFormat api.GPU.requestAdapter api.GPU.requestAdapter.discrete_adapter_default_ac api.GPU.wgslLanguageFeatures api.GPUAdapter api.GPUAdapter.features api.GPUAdapter.info api.GPUAdapter.isFallbackAdapter api.GPUAdapter.limits api.GPUAdapter.requestDevice api.GPUAdapter.requestDevice.lost_device_on_duplicate api.GPUAdapterInfo api.GPUAdapterInfo.architecture api.GPUAdapterInfo.description api.GPUAdapterInfo.device api.GPUAdapterInfo.vendor api.GPUBindGroup api.GPUBindGroup.label api.GPUBindGroupLayout api.GPUBindGroupLayout.label api.GPUBuffer api.GPUBuffer.destroy api.GPUBuffer.getMappedRange api.GPUBuffer.label api.GPUBuffer.mapAsync api.GPUBuffer.mapState api.GPUBuffer.size api.GPUBuffer.unmap api.GPUBuffer.usage api.GPUCanvasContext api.GPUCanvasContext.canvas api.GPUCanvasContext.configure api.GPUCanvasContext.configure.toneMapping api.GPUCanvasContext.getConfiguration api.GPUCanvasContext.getCurrentTexture api.GPUCanvasContext.unconfigure api.GPUCommandBuffer api.GPUCommandBuffer.label api.GPUCommandEncoder api.GPUCommandEncoder.beginComputePass api.GPUCommandEncoder.beginComputePass.timestampWrites api.GPUCommandEncoder.beginRenderPass api.GPUCommandEncoder.beginRenderPass.depthSlice_option api.GPUCommandEncoder.beginRenderPass.separate_depth_stencil_read-only api.GPUCommandEncoder.beginRenderPass.timestampWrites api.GPUCommandEncoder.clearBuffer api.GPUCommandEncoder.copyBufferToBuffer api.GPUCommandEncoder.copyBufferToTexture api.GPUCommandEncoder.copyTextureToBuffer api.GPUCommandEncoder.copyTextureToTexture api.GPUCommandEncoder.finish api.GPUCommandEncoder.insertDebugMarker api.GPUCommandEncoder.label api.GPUCommandEncoder.popDebugGroup api.GPUCommandEncoder.pushDebugGroup api.GPUCommandEncoder.resolveQuerySet api.GPUCompilationInfo api.GPUCompilationInfo.messages api.GPUCompilationMessage api.GPUCompilationMessage.length api.GPUCompilationMessage.lineNum api.GPUCompilationMessage.linePos api.GPUCompilationMessage.message api.GPUCompilationMessage.offset api.GPUCompilationMessage.type api.GPUComputePassEncoder api.GPUComputePassEncoder.dispatchWorkgroups api.GPUComputePassEncoder.dispatchWorkgroupsIndirect api.GPUComputePassEncoder.end api.GPUComputePassEncoder.insertDebugMarker api.GPUComputePassEncoder.label api.GPUComputePassEncoder.popDebugGroup api.GPUComputePassEncoder.pushDebugGroup api.GPUComputePassEncoder.setBindGroup api.GPUComputePassEncoder.setBindGroup.unset_bind_group api.GPUComputePassEncoder.setPipeline api.GPUComputePipeline api.GPUComputePipeline.getBindGroupLayout api.GPUComputePipeline.label api.GPUDevice api.GPUDevice.adapterInfo api.GPUDevice.createBindGroup api.GPUDevice.createBindGroupLayout api.GPUDevice.createBindGroupLayout.storageTexture_access_read-write_read-only api.GPUDevice.createBindGroupLayout.texture_rgb10a2uint api.GPUDevice.createBuffer api.GPUDevice.createCommandEncoder api.GPUDevice.createComputePipeline api.GPUDevice.createComputePipeline.optional_entryPoint api.GPUDevice.createComputePipelineAsync api.GPUDevice.createComputePipelineAsync.optional_entryPoint api.GPUDevice.createPipelineLayout api.GPUDevice.createQuerySet api.GPUDevice.createQuerySet.timestamp api.GPUDevice.createRenderBundleEncoder api.GPUDevice.createRenderPipeline api.GPUDevice.createRenderPipeline.dual-source-blending api.GPUDevice.createRenderPipeline.optional_depthcompare_depthwriteenabled api.GPUDevice.createRenderPipeline.optional_entryPoint api.GPUDevice.createRenderPipeline.texture_rgb10a2uint api.GPUDevice.createRenderPipeline.validates_depth_bias_for_line_and_point_topologies api.GPUDevice.createRenderPipeline.vertex_unorm10-10-10-2 api.GPUDevice.createRenderPipelineAsync api.GPUDevice.createRenderPipelineAsync.dual-source-blending api.GPUDevice.createRenderPipelineAsync.optional_depthcompare_depthwriteenabled api.GPUDevice.createRenderPipelineAsync.optional_entryPoint api.GPUDevice.createRenderPipelineAsync.texture_rgb10a2uint api.GPUDevice.createRenderPipelineAsync.validates_depth_bias_for_line_and_point_topologies api.GPUDevice.createRenderPipelineAsync.vertex_unorm10-10-10-2 api.GPUDevice.createSampler api.GPUDevice.createShaderModule api.GPUDevice.createTexture api.GPUDevice.createTexture.texture_rgb10a2uint api.GPUDevice.destroy api.GPUDevice.features api.GPUDevice.importExternalTexture api.GPUDevice.importExternalTexture.color_space_display-p3 api.GPUDevice.importExternalTexture.videoframe_source api.GPUDevice.label api.GPUDevice.limits api.GPUDevice.lost api.GPUDevice.popErrorScope api.GPUDevice.pushErrorScope api.GPUDevice.queue api.GPUDevice.uncapturederror_event api.GPUDeviceLostInfo api.GPUDeviceLostInfo.message api.GPUDeviceLostInfo.reason api.GPUError api.GPUError.message api.GPUExternalTexture api.GPUExternalTexture.label api.GPUInternalError api.GPUInternalError.GPUInternalError api.GPUOutOfMemoryError api.GPUOutOfMemoryError.GPUOutOfMemoryError api.GPUPipelineError api.GPUPipelineError.GPUPipelineError api.GPUPipelineError.GPUPipelineError.message_optional api.GPUPipelineError.reason api.GPUPipelineLayout api.GPUPipelineLayout.label api.GPUQuerySet api.GPUQuerySet.count api.GPUQuerySet.destroy api.GPUQuerySet.label api.GPUQuerySet.type api.GPUQuerySet.type.timestamp api.GPUQueue api.GPUQueue.copyExternalImageToTexture api.GPUQueue.copyExternalImageToTexture.htmlimageelement_imagedata_source api.GPUQueue.copyExternalImageToTexture.videoframe_source api.GPUQueue.label api.GPUQueue.onSubmittedWorkDone api.GPUQueue.submit api.GPUQueue.submit.validates_command_buffer_uniqueness api.GPUQueue.writeBuffer api.GPUQueue.writeTexture api.GPURenderBundle api.GPURenderBundle.label api.GPURenderBundleEncoder api.GPURenderBundleEncoder.draw api.GPURenderBundleEncoder.drawIndexed api.GPURenderBundleEncoder.drawIndexedIndirect api.GPURenderBundleEncoder.drawIndirect api.GPURenderBundleEncoder.finish api.GPURenderBundleEncoder.insertDebugMarker api.GPURenderBundleEncoder.label api.GPURenderBundleEncoder.popDebugGroup api.GPURenderBundleEncoder.pushDebugGroup api.GPURenderBundleEncoder.setBindGroup api.GPURenderBundleEncoder.setBindGroup.unset_bind_group api.GPURenderBundleEncoder.setIndexBuffer api.GPURenderBundleEncoder.setPipeline api.GPURenderBundleEncoder.setVertexBuffer api.GPURenderBundleEncoder.setVertexBuffer.unset_vertex_buffer api.GPURenderPassEncoder api.GPURenderPassEncoder.beginOcclusionQuery api.GPURenderPassEncoder.draw api.GPURenderPassEncoder.drawIndexed api.GPURenderPassEncoder.drawIndexedIndirect api.GPURenderPassEncoder.drawIndirect api.GPURenderPassEncoder.end api.GPURenderPassEncoder.endOcclusionQuery api.GPURenderPassEncoder.executeBundles api.GPURenderPassEncoder.insertDebugMarker api.GPURenderPassEncoder.label api.GPURenderPassEncoder.popDebugGroup api.GPURenderPassEncoder.pushDebugGroup api.GPURenderPassEncoder.setBindGroup api.GPURenderPassEncoder.setBindGroup.unset_bind_group api.GPURenderPassEncoder.setBlendConstant api.GPURenderPassEncoder.setIndexBuffer api.GPURenderPassEncoder.setPipeline api.GPURenderPassEncoder.setScissorRect api.GPURenderPassEncoder.setStencilReference api.GPURenderPassEncoder.setVertexBuffer api.GPURenderPassEncoder.setVertexBuffer.unset_vertex_buffer api.GPURenderPassEncoder.setViewport api.GPURenderPipeline api.GPURenderPipeline.getBindGroupLayout api.GPURenderPipeline.label api.GPUSampler api.GPUSampler.label api.GPUShaderModule api.GPUShaderModule.getCompilationInfo api.GPUShaderModule.label api.GPUSupportedFeatures api.GPUSupportedFeatures.@@iterator api.GPUSupportedFeatures.entries api.GPUSupportedFeatures.feature_bgra8unorm-storage api.GPUSupportedFeatures.feature_clip-distances api.GPUSupportedFeatures.feature_depth-clip-control api.GPUSupportedFeatures.feature_depth32float-stencil8 api.GPUSupportedFeatures.feature_dual-source-blending api.GPUSupportedFeatures.feature_float32-blendable api.GPUSupportedFeatures.feature_float32-filterable api.GPUSupportedFeatures.feature_indirect-first-instance api.GPUSupportedFeatures.feature_rg11b10ufloat-renderable api.GPUSupportedFeatures.feature_shader-f16 api.GPUSupportedFeatures.feature_texture-compression-astc api.GPUSupportedFeatures.feature_texture-compression-bc api.GPUSupportedFeatures.feature_texture-compression-etc2 api.GPUSupportedFeatures.feature_timestamp-query api.GPUSupportedFeatures.forEach api.GPUSupportedFeatures.has api.GPUSupportedFeatures.keys api.GPUSupportedFeatures.size api.GPUSupportedFeatures.values api.GPUSupportedLimits api.GPUSupportedLimits.maxBindGroups api.GPUSupportedLimits.maxBindGroupsPlusVertexBuffers api.GPUSupportedLimits.maxBindingsPerBindGroup api.GPUSupportedLimits.maxBufferSize api.GPUSupportedLimits.maxColorAttachmentBytesPerSample api.GPUSupportedLimits.maxColorAttachments api.GPUSupportedLimits.maxComputeInvocationsPerWorkgroup api.GPUSupportedLimits.maxComputeWorkgroupSizeX api.GPUSupportedLimits.maxComputeWorkgroupSizeY api.GPUSupportedLimits.maxComputeWorkgroupSizeZ api.GPUSupportedLimits.maxComputeWorkgroupStorageSize api.GPUSupportedLimits.maxComputeWorkgroupsPerDimension api.GPUSupportedLimits.maxDynamicStorageBuffersPerPipelineLayout api.GPUSupportedLimits.maxDynamicUniformBuffersPerPipelineLayout api.GPUSupportedLimits.maxInterStageShaderComponents api.GPUSupportedLimits.maxInterStageShaderVariables api.GPUSupportedLimits.maxSampledTexturesPerShaderStage api.GPUSupportedLimits.maxSamplersPerShaderStage api.GPUSupportedLimits.maxStorageBufferBindingSize api.GPUSupportedLimits.maxStorageBuffersPerShaderStage api.GPUSupportedLimits.maxStorageTexturesPerShaderStage api.GPUSupportedLimits.maxTextureArrayLayers api.GPUSupportedLimits.maxTextureDimension1D api.GPUSupportedLimits.maxTextureDimension2D api.GPUSupportedLimits.maxTextureDimension3D api.GPUSupportedLimits.maxUniformBufferBindingSize api.GPUSupportedLimits.maxUniformBuffersPerShaderStage api.GPUSupportedLimits.maxVertexAttributes api.GPUSupportedLimits.maxVertexBufferArrayStride api.GPUSupportedLimits.maxVertexBuffers api.GPUSupportedLimits.minStorageBufferOffsetAlignment api.GPUSupportedLimits.minUniformBufferOffsetAlignment api.GPUTexture api.GPUTexture.createView api.GPUTexture.createView.texture_rgb10a2uint api.GPUTexture.depthOrArrayLayers api.GPUTexture.destroy api.GPUTexture.dimension api.GPUTexture.format api.GPUTexture.format.texture_rgb10a2uint api.GPUTexture.height api.GPUTexture.label api.GPUTexture.mipLevelCount api.GPUTexture.sampleCount api.GPUTexture.usage api.GPUTexture.width api.GPUTextureView api.GPUTextureView.label api.GPUUncapturedErrorEvent api.GPUUncapturedErrorEvent.GPUUncapturedErrorEvent api.GPUUncapturedErrorEvent.error api.GPUValidationError api.GPUValidationError.GPUValidationError api.HTMLCanvasElement.getContext.webgpu_context api.Navigator.gpu api.OffscreenCanvas.getContext.webgpu_context api.WGSLLanguageFeatures api.WGSLLanguageFeatures.@@iterator api.WGSLLanguageFeatures.entries api.WGSLLanguageFeatures.extension_packed_4x8_integer_dot_product api.WGSLLanguageFeatures.extension_readonly_and_readwrite_storage_textures api.WGSLLanguageFeatures.extension_unrestricted_pointer_parameters api.WGSLLanguageFeatures.forEach api.WGSLLanguageFeatures.has api.WGSLLanguageFeatures.keys api.WGSLLanguageFeatures.size api.WGSLLanguageFeatures.values api.WorkerNavigator.gpu
webhid	WebHID	The WebHID API provides access to Human Interface Devices (HID) that are connected to the user's device.	api.HID api.HID.connect_event api.HID.disconnect_event api.HID.getDevices api.HID.requestDevice api.HID.worker_support api.HIDConnectionEvent api.HIDConnectionEvent.HIDConnectionEvent api.HIDConnectionEvent.device api.HIDConnectionEvent.worker_support api.HIDDevice api.HIDDevice.close api.HIDDevice.collections api.HIDDevice.forget api.HIDDevice.inputreport_event api.HIDDevice.open api.HIDDevice.opened api.HIDDevice.productId api.HIDDevice.productName api.HIDDevice.receiveFeatureReport api.HIDDevice.sendFeatureReport api.HIDDevice.sendReport api.HIDDevice.vendorId api.HIDDevice.worker_support api.HIDInputReportEvent api.HIDInputReportEvent.data api.HIDInputReportEvent.device api.HIDInputReportEvent.reportId api.HIDInputReportEvent.worker_support api.Navigator.hid api.WorkerNavigator.hid html.elements.iframe.allow.hid http.headers.Permissions-Policy.hid
webnn	WebNN	The WebNN API constructs and executes computational graphs of neural networks by making use of the various machine learning capabilities and hardware accelerators available on the device. Also known as Web Neural Network API.	api.ML api.ML.createContext api.MLContext api.MLContext.dispatch api.MLContext.opSupportLimits api.MLGraph api.MLGraphBuilder api.MLGraphBuilder.MLGraphBuilder api.MLGraphBuilder.abs api.MLGraphBuilder.add api.MLGraphBuilder.argMax api.MLGraphBuilder.argMin api.MLGraphBuilder.averagePool2d api.MLGraphBuilder.batchNormalization api.MLGraphBuilder.build api.MLGraphBuilder.cast api.MLGraphBuilder.ceil api.MLGraphBuilder.clamp api.MLGraphBuilder.concat api.MLGraphBuilder.constant api.MLGraphBuilder.conv2d api.MLGraphBuilder.convTranspose2d api.MLGraphBuilder.cos api.MLGraphBuilder.cumulativeSum api.MLGraphBuilder.dequantizeLinear api.MLGraphBuilder.div api.MLGraphBuilder.elu api.MLGraphBuilder.equal api.MLGraphBuilder.erf api.MLGraphBuilder.exp api.MLGraphBuilder.expand api.MLGraphBuilder.floor api.MLGraphBuilder.gather api.MLGraphBuilder.gatherElements api.MLGraphBuilder.gatherND api.MLGraphBuilder.gemm api.MLGraphBuilder.greater api.MLGraphBuilder.greaterOrEqual api.MLGraphBuilder.gru api.MLGraphBuilder.gruCell api.MLGraphBuilder.hardSigmoid api.MLGraphBuilder.hardSwish api.MLGraphBuilder.identity api.MLGraphBuilder.input api.MLGraphBuilder.instanceNormalization api.MLGraphBuilder.l2Pool2d api.MLGraphBuilder.layerNormalization api.MLGraphBuilder.leakyRelu api.MLGraphBuilder.lesser api.MLGraphBuilder.lesserOrEqual api.MLGraphBuilder.linear api.MLGraphBuilder.log api.MLGraphBuilder.logicalAnd api.MLGraphBuilder.logicalNot api.MLGraphBuilder.logicalOr api.MLGraphBuilder.logicalXor api.MLGraphBuilder.lstm api.MLGraphBuilder.lstmCell api.MLGraphBuilder.matmul api.MLGraphBuilder.max api.MLGraphBuilder.maxPool2d api.MLGraphBuilder.min api.MLGraphBuilder.mul api.MLGraphBuilder.neg api.MLGraphBuilder.pad api.MLGraphBuilder.pow api.MLGraphBuilder.prelu api.MLGraphBuilder.quantizeLinear api.MLGraphBuilder.reciprocal api.MLGraphBuilder.reduceL1 api.MLGraphBuilder.reduceL2 api.MLGraphBuilder.reduceLogSum api.MLGraphBuilder.reduceLogSumExp api.MLGraphBuilder.reduceMax api.MLGraphBuilder.reduceMean api.MLGraphBuilder.reduceMin api.MLGraphBuilder.reduceProduct api.MLGraphBuilder.reduceSum api.MLGraphBuilder.reduceSumSquare api.MLGraphBuilder.relu api.MLGraphBuilder.resample2d api.MLGraphBuilder.reshape api.MLGraphBuilder.scatterElements api.MLGraphBuilder.scatterND api.MLGraphBuilder.sigmoid api.MLGraphBuilder.sign api.MLGraphBuilder.sin api.MLGraphBuilder.slice api.MLGraphBuilder.softmax api.MLGraphBuilder.softplus api.MLGraphBuilder.softsign api.MLGraphBuilder.split api.MLGraphBuilder.sqrt api.MLGraphBuilder.sub api.MLGraphBuilder.tan api.MLGraphBuilder.tanh api.MLGraphBuilder.tile api.MLGraphBuilder.transpose api.MLGraphBuilder.triangular api.MLGraphBuilder.where api.MLOperand api.MLOperand.MLNumber api.Navigator.ml api.WorkerNavigator.ml
webp	WebP	The WebP image format is a raster graphics file format that supports animation, alpha transparency, and lossy as well as lossless compression.
webrtc	WebRTC	The WebRTC API establishes real-time communication channels directly between browsers. It is commonly used in video conferencing applications.	api.RTCCertificate api.RTCCertificate.expires api.RTCCertificate.getFingerprints api.RTCDTMFSender api.RTCDTMFSender.canInsertDTMF api.RTCDTMFSender.insertDTMF api.RTCDTMFSender.toneBuffer api.RTCDTMFSender.tonechange_event api.RTCDTMFToneChangeEvent api.RTCDTMFToneChangeEvent.RTCDTMFToneChangeEvent api.RTCDTMFToneChangeEvent.tone api.RTCDataChannel api.RTCDataChannel.binaryType api.RTCDataChannel.binaryType.arraybuffer_value api.RTCDataChannel.binaryType.blob_value api.RTCDataChannel.bufferedAmount api.RTCDataChannel.bufferedAmountLowThreshold api.RTCDataChannel.bufferedamountlow_event api.RTCDataChannel.close api.RTCDataChannel.close_event api.RTCDataChannel.closing_event api.RTCDataChannel.error_event api.RTCDataChannel.id api.RTCDataChannel.label api.RTCDataChannel.maxPacketLifeTime api.RTCDataChannel.maxRetransmits api.RTCDataChannel.message_event api.RTCDataChannel.negotiated api.RTCDataChannel.open_event api.RTCDataChannel.ordered api.RTCDataChannel.protocol api.RTCDataChannel.readyState api.RTCDataChannel.sctp_sdp_21 api.RTCDataChannel.send api.RTCDataChannel.transferable api.RTCDataChannelEvent api.RTCDataChannelEvent.RTCDataChannelEvent api.RTCDataChannelEvent.channel api.RTCDtlsTransport api.RTCDtlsTransport.error_event api.RTCDtlsTransport.getRemoteCertificates api.RTCDtlsTransport.iceTransport api.RTCDtlsTransport.state api.RTCDtlsTransport.statechange_event api.RTCError api.RTCError.RTCError api.RTCError.errorDetail api.RTCError.receivedAlert api.RTCError.sctpCauseCode api.RTCError.sdpLineNumber api.RTCError.sentAlert api.RTCErrorEvent api.RTCErrorEvent.RTCErrorEvent api.RTCErrorEvent.error api.RTCIceCandidate api.RTCIceCandidate.RTCIceCandidate api.RTCIceCandidate.address api.RTCIceCandidate.candidate api.RTCIceCandidate.component api.RTCIceCandidate.foundation api.RTCIceCandidate.port api.RTCIceCandidate.priority api.RTCIceCandidate.protocol api.RTCIceCandidate.relatedAddress api.RTCIceCandidate.relatedPort api.RTCIceCandidate.relayProtocol api.RTCIceCandidate.sdpMLineIndex api.RTCIceCandidate.sdpMid api.RTCIceCandidate.tcpType api.RTCIceCandidate.toJSON api.RTCIceCandidate.type api.RTCIceCandidate.url api.RTCIceCandidate.usernameFragment api.RTCIceTransport api.RTCIceTransport.gatheringState api.RTCIceTransport.gatheringstatechange_event api.RTCIceTransport.getLocalCandidates api.RTCIceTransport.getLocalParameters api.RTCIceTransport.getRemoteCandidates api.RTCIceTransport.getRemoteParameters api.RTCIceTransport.getSelectedCandidatePair api.RTCIceTransport.role api.RTCIceTransport.selectedcandidatepairchange_event api.RTCIceTransport.state api.RTCIceTransport.statechange_event api.RTCPeerConnection api.RTCPeerConnection.RTCPeerConnection api.RTCPeerConnection.RTCPeerConnection.configuration_bundlePolicy_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_certificates_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceCandidatePoolSize_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.credential_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.urls_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.username_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_iceTransportPolicy_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_peerIdentity_parameter api.RTCPeerConnection.RTCPeerConnection.configuration_rtcpMuxPolicy_parameter api.RTCPeerConnection.addIceCandidate api.RTCPeerConnection.addIceCandidate.returns_promise api.RTCPeerConnection.addTrack api.RTCPeerConnection.addTransceiver api.RTCPeerConnection.addTransceiver.init_direction_parameter api.RTCPeerConnection.addTransceiver.init_sendEncodings_parameter api.RTCPeerConnection.addTransceiver.init_streams_parameter api.RTCPeerConnection.canTrickleIceCandidates api.RTCPeerConnection.close api.RTCPeerConnection.connectionState api.RTCPeerConnection.connectionstatechange_event api.RTCPeerConnection.createAnswer api.RTCPeerConnection.createAnswer.returns_promise api.RTCPeerConnection.createDataChannel api.RTCPeerConnection.createOffer api.RTCPeerConnection.createOffer.returns_promise api.RTCPeerConnection.currentLocalDescription api.RTCPeerConnection.currentRemoteDescription api.RTCPeerConnection.datachannel_event api.RTCPeerConnection.generateCertificate_static api.RTCPeerConnection.getConfiguration api.RTCPeerConnection.getReceivers api.RTCPeerConnection.getReceivers.stopped_transceivers_removed api.RTCPeerConnection.getSenders api.RTCPeerConnection.getSenders.stopped_transceivers_removed api.RTCPeerConnection.getTransceivers api.RTCPeerConnection.getTransceivers.stopped_transceivers_removed api.RTCPeerConnection.iceConnectionState api.RTCPeerConnection.iceGatheringState api.RTCPeerConnection.icecandidate_event api.RTCPeerConnection.icecandidateerror_event api.RTCPeerConnection.iceconnectionstatechange_event api.RTCPeerConnection.icegatheringstatechange_event api.RTCPeerConnection.localDescription api.RTCPeerConnection.negotiationneeded_event api.RTCPeerConnection.pendingLocalDescription api.RTCPeerConnection.pendingRemoteDescription api.RTCPeerConnection.remoteDescription api.RTCPeerConnection.removeTrack api.RTCPeerConnection.restartIce api.RTCPeerConnection.setConfiguration api.RTCPeerConnection.setLocalDescription api.RTCPeerConnection.setLocalDescription.description_parameter_optional api.RTCPeerConnection.setLocalDescription.returns_promise api.RTCPeerConnection.setRemoteDescription api.RTCPeerConnection.setRemoteDescription.implicit_rollback api.RTCPeerConnection.setRemoteDescription.returns_promise api.RTCPeerConnection.signalingState api.RTCPeerConnection.signalingstatechange_event api.RTCPeerConnection.track_event api.RTCPeerConnectionIceErrorEvent api.RTCPeerConnectionIceErrorEvent.RTCPeerConnectionIceErrorEvent api.RTCPeerConnectionIceErrorEvent.address api.RTCPeerConnectionIceErrorEvent.errorCode api.RTCPeerConnectionIceErrorEvent.errorText api.RTCPeerConnectionIceErrorEvent.port api.RTCPeerConnectionIceErrorEvent.url api.RTCPeerConnectionIceEvent api.RTCPeerConnectionIceEvent.RTCPeerConnectionIceEvent api.RTCPeerConnectionIceEvent.candidate api.RTCPeerConnectionIceEvent.url api.RTCRtpReceiver api.RTCRtpReceiver.createEncodedStreams api.RTCRtpReceiver.getCapabilities_static api.RTCRtpReceiver.getContributingSources api.RTCRtpReceiver.getContributingSources.audioLevel api.RTCRtpReceiver.getContributingSources.audio_tracks_supported api.RTCRtpReceiver.getContributingSources.rtpTimestamp api.RTCRtpReceiver.getContributingSources.source api.RTCRtpReceiver.getContributingSources.timestamp api.RTCRtpReceiver.getContributingSources.video_tracks_supported api.RTCRtpReceiver.getParameters api.RTCRtpReceiver.getParameters.return_object_property_codecs api.RTCRtpReceiver.getParameters.return_object_property_headerExtensions api.RTCRtpReceiver.getParameters.return_object_property_rtcp api.RTCRtpReceiver.getSynchronizationSources api.RTCRtpReceiver.getSynchronizationSources.audio_tracks_supported api.RTCRtpReceiver.getSynchronizationSources.video_tracks_supported api.RTCRtpReceiver.jitterBufferTarget api.RTCRtpReceiver.track api.RTCRtpReceiver.transport api.RTCRtpSender api.RTCRtpSender.createEncodedStreams api.RTCRtpSender.dtmf api.RTCRtpSender.getCapabilities_static api.RTCRtpSender.getParameters api.RTCRtpSender.getParameters.return_object_property_codecs api.RTCRtpSender.getParameters.return_object_property_encodings api.RTCRtpSender.getParameters.return_object_property_headerExtensions api.RTCRtpSender.getParameters.return_object_property_rtcp api.RTCRtpSender.getParameters.return_object_property_transactionId api.RTCRtpSender.replaceTrack api.RTCRtpSender.setParameters api.RTCRtpSender.setParameters.parameters_codecs_parameter api.RTCRtpSender.setParameters.parameters_encodings_parameter api.RTCRtpSender.setParameters.parameters_encodings_parameter.active api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxBitrate api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxFramerate api.RTCRtpSender.setParameters.parameters_encodings_parameter.rid api.RTCRtpSender.setParameters.parameters_encodings_parameter.scaleResolutionDownBy api.RTCRtpSender.setParameters.parameters_headerExtensions_parameter api.RTCRtpSender.setParameters.parameters_rtcp_parameter api.RTCRtpSender.setParameters.parameters_transactionId_parameter api.RTCRtpSender.setStreams api.RTCRtpSender.track api.RTCRtpSender.transport api.RTCRtpTransceiver api.RTCRtpTransceiver.currentDirection api.RTCRtpTransceiver.currentDirection.stopped_value api.RTCRtpTransceiver.direction api.RTCRtpTransceiver.direction.value_stopped api.RTCRtpTransceiver.getHeaderExtensionsToNegotiate api.RTCRtpTransceiver.getNegotiatedHeaderExtensions api.RTCRtpTransceiver.mid api.RTCRtpTransceiver.receiver api.RTCRtpTransceiver.sender api.RTCRtpTransceiver.setCodecPreferences api.RTCRtpTransceiver.setHeaderExtensionsToNegotiate api.RTCRtpTransceiver.stop api.RTCSessionDescription api.RTCSessionDescription.sdp api.RTCSessionDescription.toJSON api.RTCSessionDescription.type api.RTCTrackEvent api.RTCTrackEvent.RTCTrackEvent api.RTCTrackEvent.receiver api.RTCTrackEvent.streams api.RTCTrackEvent.track api.RTCTrackEvent.transceiver
webrtc-encoded-transform	WebRTC encoded transform	The WebRTC encoded transform API allows you to modify audio and video streams in WebRTC connections. For example, it can be used for visual effects or custom codecs.	api.DedicatedWorkerGlobalScope.rtctransform_event api.RTCEncodedAudioFrame api.RTCEncodedAudioFrame.RTCEncodedAudioFrame api.RTCEncodedAudioFrame.data api.RTCEncodedAudioFrame.getMetadata api.RTCEncodedVideoFrame api.RTCEncodedVideoFrame.RTCEncodedVideoFrame api.RTCEncodedVideoFrame.data api.RTCEncodedVideoFrame.getMetadata api.RTCEncodedVideoFrame.type api.RTCRtpReceiver.transform api.RTCRtpScriptTransform api.RTCRtpScriptTransform.RTCRtpScriptTransform api.RTCRtpScriptTransformer api.RTCRtpScriptTransformer.generateKeyFrame api.RTCRtpScriptTransformer.options api.RTCRtpScriptTransformer.readable api.RTCRtpScriptTransformer.sendKeyFrameRequest api.RTCRtpScriptTransformer.writable api.RTCRtpSender.transform api.RTCTransformEvent api.RTCTransformEvent.transformer
webrtc-sctp	WebRTC SCTP information	The sctp object on RTCPeerConnection represents the negotiated SCTP transport. SCTP (Stream Control Transmission Protocol) is the protocol that RTCDataChannel uses.	api.RTCPeerConnection.sctp api.RTCSctpTransport api.RTCSctpTransport.maxChannels api.RTCSctpTransport.maxMessageSize api.RTCSctpTransport.state api.RTCSctpTransport.statechange_event api.RTCSctpTransport.transport
webrtc-stats	WebRTC statistics	The RTCPeerConnection.getStats(), RTCRtpSender.getStats(), and RTCRtpReceiver.getStats() methods return detailed information about the status, performance, network, and media for a given WebRTC connection.	api.RTCPeerConnection.getStats api.RTCPeerConnection.getStats.returns_promise api.RTCPeerConnection.getStats.selector_parameter api.RTCRtpReceiver.getStats api.RTCRtpSender.getStats api.RTCStatsReport api.RTCStatsReport.@@iterator api.RTCStatsReport.entries api.RTCStatsReport.forEach api.RTCStatsReport.get api.RTCStatsReport.has api.RTCStatsReport.keys api.RTCStatsReport.size api.RTCStatsReport.type_candidate-pair api.RTCStatsReport.type_candidate-pair.availableOutgoingBitrate api.RTCStatsReport.type_candidate-pair.bytesDiscardedOnSend api.RTCStatsReport.type_candidate-pair.bytesReceived api.RTCStatsReport.type_candidate-pair.bytesSent api.RTCStatsReport.type_candidate-pair.consentRequestsSent api.RTCStatsReport.type_candidate-pair.currentRoundTripTime api.RTCStatsReport.type_candidate-pair.id api.RTCStatsReport.type_candidate-pair.lastPacketReceivedTimestamp api.RTCStatsReport.type_candidate-pair.lastPacketSentTimestamp api.RTCStatsReport.type_candidate-pair.localCandidateId api.RTCStatsReport.type_candidate-pair.nominated api.RTCStatsReport.type_candidate-pair.packetsDiscardedOnSend api.RTCStatsReport.type_candidate-pair.packetsReceived api.RTCStatsReport.type_candidate-pair.packetsSent api.RTCStatsReport.type_candidate-pair.remoteCandidateId api.RTCStatsReport.type_candidate-pair.requestsReceived api.RTCStatsReport.type_candidate-pair.requestsSent api.RTCStatsReport.type_candidate-pair.responsesReceived api.RTCStatsReport.type_candidate-pair.responsesSent api.RTCStatsReport.type_candidate-pair.state api.RTCStatsReport.type_candidate-pair.timestamp api.RTCStatsReport.type_candidate-pair.totalRoundTripTime api.RTCStatsReport.type_candidate-pair.transportId api.RTCStatsReport.type_candidate-pair.type api.RTCStatsReport.type_certificate api.RTCStatsReport.type_certificate.base64Certificate api.RTCStatsReport.type_certificate.fingerprint api.RTCStatsReport.type_certificate.fingerprintAlgorithm api.RTCStatsReport.type_certificate.id api.RTCStatsReport.type_certificate.timestamp api.RTCStatsReport.type_certificate.type api.RTCStatsReport.type_codec api.RTCStatsReport.type_codec.channels api.RTCStatsReport.type_codec.clockRate api.RTCStatsReport.type_codec.id api.RTCStatsReport.type_codec.mimeType api.RTCStatsReport.type_codec.payloadType api.RTCStatsReport.type_codec.sdpFmtpLine api.RTCStatsReport.type_codec.timestamp api.RTCStatsReport.type_codec.transportId api.RTCStatsReport.type_codec.type api.RTCStatsReport.type_data-channel api.RTCStatsReport.type_data-channel.bytesReceived api.RTCStatsReport.type_data-channel.bytesSent api.RTCStatsReport.type_data-channel.dataChannelIdentifier api.RTCStatsReport.type_data-channel.id api.RTCStatsReport.type_data-channel.label api.RTCStatsReport.type_data-channel.messagesReceived api.RTCStatsReport.type_data-channel.messagesSent api.RTCStatsReport.type_data-channel.protocol api.RTCStatsReport.type_data-channel.state api.RTCStatsReport.type_data-channel.timestamp api.RTCStatsReport.type_data-channel.type api.RTCStatsReport.type_inbound-rtp api.RTCStatsReport.type_inbound-rtp.audioLevel api.RTCStatsReport.type_inbound-rtp.bytesReceived api.RTCStatsReport.type_inbound-rtp.codecId api.RTCStatsReport.type_inbound-rtp.concealedSamples api.RTCStatsReport.type_inbound-rtp.concealmentEvents api.RTCStatsReport.type_inbound-rtp.fecPacketsDiscarded api.RTCStatsReport.type_inbound-rtp.fecPacketsReceived api.RTCStatsReport.type_inbound-rtp.frameHeight api.RTCStatsReport.type_inbound-rtp.frameWidth api.RTCStatsReport.type_inbound-rtp.framesDecoded api.RTCStatsReport.type_inbound-rtp.framesPerSecond api.RTCStatsReport.type_inbound-rtp.framesReceived api.RTCStatsReport.type_inbound-rtp.headerBytesReceived api.RTCStatsReport.type_inbound-rtp.id api.RTCStatsReport.type_inbound-rtp.insertedSamplesForDeceleration api.RTCStatsReport.type_inbound-rtp.jitter api.RTCStatsReport.type_inbound-rtp.jitterBufferDelay api.RTCStatsReport.type_inbound-rtp.jitterBufferEmittedCount api.RTCStatsReport.type_inbound-rtp.jitterBufferMinimumDelay api.RTCStatsReport.type_inbound-rtp.jitterBufferTargetDelay api.RTCStatsReport.type_inbound-rtp.keyFramesDecoded api.RTCStatsReport.type_inbound-rtp.kind api.RTCStatsReport.type_inbound-rtp.lastPacketReceivedTimestamp api.RTCStatsReport.type_inbound-rtp.mid api.RTCStatsReport.type_inbound-rtp.nackCount api.RTCStatsReport.type_inbound-rtp.packetsDiscarded api.RTCStatsReport.type_inbound-rtp.packetsLost api.RTCStatsReport.type_inbound-rtp.packetsReceived api.RTCStatsReport.type_inbound-rtp.playoutId api.RTCStatsReport.type_inbound-rtp.qpSum api.RTCStatsReport.type_inbound-rtp.remoteId api.RTCStatsReport.type_inbound-rtp.removedSamplesForAcceleration api.RTCStatsReport.type_inbound-rtp.silentConcealedSamples api.RTCStatsReport.type_inbound-rtp.ssrc api.RTCStatsReport.type_inbound-rtp.timestamp api.RTCStatsReport.type_inbound-rtp.totalAudioEnergy api.RTCStatsReport.type_inbound-rtp.totalDecodeTime api.RTCStatsReport.type_inbound-rtp.totalInterFrameDelay api.RTCStatsReport.type_inbound-rtp.totalProcessingDelay api.RTCStatsReport.type_inbound-rtp.totalSamplesDuration api.RTCStatsReport.type_inbound-rtp.totalSamplesReceived api.RTCStatsReport.type_inbound-rtp.totalSquaredInterFrameDelay api.RTCStatsReport.type_inbound-rtp.trackIdentifier api.RTCStatsReport.type_inbound-rtp.transportId api.RTCStatsReport.type_inbound-rtp.type api.RTCStatsReport.type_local-candidate api.RTCStatsReport.type_local-candidate.address api.RTCStatsReport.type_local-candidate.candidateType api.RTCStatsReport.type_local-candidate.foundation api.RTCStatsReport.type_local-candidate.id api.RTCStatsReport.type_local-candidate.port api.RTCStatsReport.type_local-candidate.priority api.RTCStatsReport.type_local-candidate.protocol api.RTCStatsReport.type_local-candidate.timestamp api.RTCStatsReport.type_local-candidate.transportId api.RTCStatsReport.type_local-candidate.type api.RTCStatsReport.type_local-candidate.usernameFragment api.RTCStatsReport.type_media-playout api.RTCStatsReport.type_media-playout.id api.RTCStatsReport.type_media-playout.kind api.RTCStatsReport.type_media-playout.synthesizedSamplesDuration api.RTCStatsReport.type_media-playout.synthesizedSamplesEvents api.RTCStatsReport.type_media-playout.timestamp api.RTCStatsReport.type_media-playout.totalPlayoutDelay api.RTCStatsReport.type_media-playout.totalSamplesCount api.RTCStatsReport.type_media-playout.totalSamplesDuration api.RTCStatsReport.type_media-playout.type api.RTCStatsReport.type_media-source api.RTCStatsReport.type_media-source.audioLevel api.RTCStatsReport.type_media-source.frames api.RTCStatsReport.type_media-source.framesPerSecond api.RTCStatsReport.type_media-source.height api.RTCStatsReport.type_media-source.id api.RTCStatsReport.type_media-source.kind api.RTCStatsReport.type_media-source.timestamp api.RTCStatsReport.type_media-source.totalAudioEnergy api.RTCStatsReport.type_media-source.totalSamplesDuration api.RTCStatsReport.type_media-source.trackIdentifier api.RTCStatsReport.type_media-source.type api.RTCStatsReport.type_media-source.width api.RTCStatsReport.type_outbound-rtp api.RTCStatsReport.type_outbound-rtp.active api.RTCStatsReport.type_outbound-rtp.bytesSent api.RTCStatsReport.type_outbound-rtp.codecId api.RTCStatsReport.type_outbound-rtp.frameHeight api.RTCStatsReport.type_outbound-rtp.frameWidth api.RTCStatsReport.type_outbound-rtp.framesEncoded api.RTCStatsReport.type_outbound-rtp.framesPerSecond api.RTCStatsReport.type_outbound-rtp.framesSent api.RTCStatsReport.type_outbound-rtp.headerBytesSent api.RTCStatsReport.type_outbound-rtp.id api.RTCStatsReport.type_outbound-rtp.keyFramesEncoded api.RTCStatsReport.type_outbound-rtp.kind api.RTCStatsReport.type_outbound-rtp.mediaSourceId api.RTCStatsReport.type_outbound-rtp.mid api.RTCStatsReport.type_outbound-rtp.nackCount api.RTCStatsReport.type_outbound-rtp.packetsSent api.RTCStatsReport.type_outbound-rtp.qpSum api.RTCStatsReport.type_outbound-rtp.qualityLimitationDurations api.RTCStatsReport.type_outbound-rtp.qualityLimitationReason api.RTCStatsReport.type_outbound-rtp.remoteId api.RTCStatsReport.type_outbound-rtp.retransmittedBytesSent api.RTCStatsReport.type_outbound-rtp.retransmittedPacketsSent api.RTCStatsReport.type_outbound-rtp.scalabilityMode api.RTCStatsReport.type_outbound-rtp.ssrc api.RTCStatsReport.type_outbound-rtp.targetBitrate api.RTCStatsReport.type_outbound-rtp.timestamp api.RTCStatsReport.type_outbound-rtp.totalEncodeTime api.RTCStatsReport.type_outbound-rtp.totalEncodedBytesTarget api.RTCStatsReport.type_outbound-rtp.totalPacketSendDelay api.RTCStatsReport.type_outbound-rtp.transportId api.RTCStatsReport.type_outbound-rtp.type api.RTCStatsReport.type_peer-connection api.RTCStatsReport.type_peer-connection.dataChannelsClosed api.RTCStatsReport.type_peer-connection.dataChannelsOpened api.RTCStatsReport.type_peer-connection.id api.RTCStatsReport.type_peer-connection.timestamp api.RTCStatsReport.type_peer-connection.type api.RTCStatsReport.type_remote-candidate api.RTCStatsReport.type_remote-candidate.address api.RTCStatsReport.type_remote-candidate.candidateType api.RTCStatsReport.type_remote-candidate.foundation api.RTCStatsReport.type_remote-candidate.id api.RTCStatsReport.type_remote-candidate.port api.RTCStatsReport.type_remote-candidate.priority api.RTCStatsReport.type_remote-candidate.protocol api.RTCStatsReport.type_remote-candidate.timestamp api.RTCStatsReport.type_remote-candidate.transportId api.RTCStatsReport.type_remote-candidate.type api.RTCStatsReport.type_remote-candidate.usernameFragment api.RTCStatsReport.type_remote-inbound-rtp api.RTCStatsReport.type_remote-inbound-rtp.codecId api.RTCStatsReport.type_remote-inbound-rtp.fractionLost api.RTCStatsReport.type_remote-inbound-rtp.id api.RTCStatsReport.type_remote-inbound-rtp.jitter api.RTCStatsReport.type_remote-inbound-rtp.kind api.RTCStatsReport.type_remote-inbound-rtp.localId api.RTCStatsReport.type_remote-inbound-rtp.packetsLost api.RTCStatsReport.type_remote-inbound-rtp.packetsReceived api.RTCStatsReport.type_remote-inbound-rtp.roundTripTime api.RTCStatsReport.type_remote-inbound-rtp.roundTripTimeMeasurements api.RTCStatsReport.type_remote-inbound-rtp.ssrc api.RTCStatsReport.type_remote-inbound-rtp.timestamp api.RTCStatsReport.type_remote-inbound-rtp.totalRoundTripTime api.RTCStatsReport.type_remote-inbound-rtp.transportId api.RTCStatsReport.type_remote-inbound-rtp.type api.RTCStatsReport.type_remote-outbound-rtp api.RTCStatsReport.type_remote-outbound-rtp.bytesSent api.RTCStatsReport.type_remote-outbound-rtp.codecId api.RTCStatsReport.type_remote-outbound-rtp.id api.RTCStatsReport.type_remote-outbound-rtp.kind api.RTCStatsReport.type_remote-outbound-rtp.localId api.RTCStatsReport.type_remote-outbound-rtp.packetsSent api.RTCStatsReport.type_remote-outbound-rtp.remoteTimestamp api.RTCStatsReport.type_remote-outbound-rtp.reportsSent api.RTCStatsReport.type_remote-outbound-rtp.roundTripTimeMeasurements api.RTCStatsReport.type_remote-outbound-rtp.ssrc api.RTCStatsReport.type_remote-outbound-rtp.timestamp api.RTCStatsReport.type_remote-outbound-rtp.totalRoundTripTime api.RTCStatsReport.type_remote-outbound-rtp.transportId api.RTCStatsReport.type_remote-outbound-rtp.type api.RTCStatsReport.type_transport api.RTCStatsReport.type_transport.bytesReceived api.RTCStatsReport.type_transport.bytesSent api.RTCStatsReport.type_transport.dtlsCipher api.RTCStatsReport.type_transport.dtlsRole api.RTCStatsReport.type_transport.dtlsState api.RTCStatsReport.type_transport.iceLocalUsernameFragment api.RTCStatsReport.type_transport.iceRole api.RTCStatsReport.type_transport.iceState api.RTCStatsReport.type_transport.id api.RTCStatsReport.type_transport.localCertificateId api.RTCStatsReport.type_transport.packetsReceived api.RTCStatsReport.type_transport.packetsSent api.RTCStatsReport.type_transport.remoteCertificateId api.RTCStatsReport.type_transport.selectedCandidatePairChanges api.RTCStatsReport.type_transport.selectedCandidatePairId api.RTCStatsReport.type_transport.srtpCipher api.RTCStatsReport.type_transport.timestamp api.RTCStatsReport.type_transport.tlsVersion api.RTCStatsReport.type_transport.type api.RTCStatsReport.values
websockets	WebSockets	The WebSocket API opens a two-way communication channel between the user's browser and a server.	api.CloseEvent api.CloseEvent.CloseEvent api.CloseEvent.code api.CloseEvent.reason api.CloseEvent.wasClean api.WebSocket api.WebSocket.WebSocket api.WebSocket.WebSocket.url_parameter_http_https_relative api.WebSocket.binaryType api.WebSocket.bufferedAmount api.WebSocket.close api.WebSocket.close_event api.WebSocket.error_event api.WebSocket.extensions api.WebSocket.message_event api.WebSocket.open_event api.WebSocket.protocol api.WebSocket.protocol_rfc_6455 api.WebSocket.readyState api.WebSocket.send api.WebSocket.url api.WebSocket.worker_support api.WebSocketError api.WebSocketError.WebSocketError api.WebSocketError.closeCode api.WebSocketError.reason http.headers.Sec-WebSocket-Accept http.headers.Sec-WebSocket-Extensions http.headers.Sec-WebSocket-Key http.headers.Sec-WebSocket-Protocol http.headers.Sec-WebSocket-Version
webtransport	WebTransport	The WebTransport API transmits data between a client and a server, by using the HTTP/3 protocol.	api.WebTransport api.WebTransport.WebTransport api.WebTransport.WebTransport.options_allowPooling_parameter api.WebTransport.WebTransport.options_congestionControl_parameter api.WebTransport.WebTransport.options_requireUnreliable_parameter api.WebTransport.WebTransport.options_serverCertificateHashes_parameter api.WebTransport.byob_readers api.WebTransport.close api.WebTransport.closed api.WebTransport.congestionControl api.WebTransport.createBidirectionalStream api.WebTransport.createBidirectionalStream.options_sendOrder_parameter api.WebTransport.createUnidirectionalStream api.WebTransport.createUnidirectionalStream.byob_readers api.WebTransport.createUnidirectionalStream.options_sendOrder_parameter api.WebTransport.datagrams api.WebTransport.getStats api.WebTransport.incomingBidirectionalStreams api.WebTransport.incomingUnidirectionalStreams api.WebTransport.ready api.WebTransport.reliability api.WebTransportBidirectionalStream api.WebTransportBidirectionalStream.readable api.WebTransportBidirectionalStream.readable.returns_WebTransportReceiveStream api.WebTransportBidirectionalStream.writable api.WebTransportBidirectionalStream.writable.returns_WebTransportSendStream api.WebTransportDatagramDuplexStream api.WebTransportDatagramDuplexStream.byob_readers api.WebTransportDatagramDuplexStream.incomingHighWaterMark api.WebTransportDatagramDuplexStream.incomingMaxAge api.WebTransportDatagramDuplexStream.maxDatagramSize api.WebTransportDatagramDuplexStream.outgoingHighWaterMark api.WebTransportDatagramDuplexStream.outgoingMaxAge api.WebTransportDatagramDuplexStream.readable api.WebTransportDatagramDuplexStream.writable api.WebTransportError api.WebTransportError.WebTransportError api.WebTransportError.source api.WebTransportError.streamErrorCode api.WebTransportReceiveStream api.WebTransportReceiveStream.getStats api.WebTransportSendStream api.WebTransportSendStream.getStats api.WebTransportSendStream.getWriter api.WebTransportSendStream.sendOrder
webusb	WebUSB	The WebUSB API exposes USB compatible devices to web pages.	api.Navigator.usb api.USB api.USB.connect_event api.USB.disconnect_event api.USB.getDevices api.USB.requestDevice api.USB.worker_support api.USBAlternateInterface api.USBAlternateInterface.USBAlternateInterface api.USBAlternateInterface.alternateSetting api.USBAlternateInterface.endpoints api.USBAlternateInterface.interfaceClass api.USBAlternateInterface.interfaceName api.USBAlternateInterface.interfaceProtocol api.USBAlternateInterface.interfaceSubclass api.USBAlternateInterface.worker_support api.USBConfiguration api.USBConfiguration.USBConfiguration api.USBConfiguration.configurationName api.USBConfiguration.configurationValue api.USBConfiguration.interfaces api.USBConfiguration.worker_support api.USBConnectionEvent api.USBConnectionEvent.USBConnectionEvent api.USBConnectionEvent.device api.USBConnectionEvent.worker_support api.USBDevice api.USBDevice.claimInterface api.USBDevice.clearHalt api.USBDevice.close api.USBDevice.configuration api.USBDevice.configurations api.USBDevice.controlTransferIn api.USBDevice.controlTransferOut api.USBDevice.deviceClass api.USBDevice.deviceProtocol api.USBDevice.deviceSubclass api.USBDevice.deviceVersionMajor api.USBDevice.deviceVersionMinor api.USBDevice.deviceVersionSubminor api.USBDevice.forget api.USBDevice.isochronousTransferIn api.USBDevice.isochronousTransferOut api.USBDevice.manufacturerName api.USBDevice.open api.USBDevice.opened api.USBDevice.productId api.USBDevice.productName api.USBDevice.releaseInterface api.USBDevice.reset api.USBDevice.selectAlternateInterface api.USBDevice.selectConfiguration api.USBDevice.serialNumber api.USBDevice.transferIn api.USBDevice.transferOut api.USBDevice.usbVersionMajor api.USBDevice.usbVersionMinor api.USBDevice.usbVersionSubminor api.USBDevice.vendorId api.USBDevice.worker_support api.USBEndpoint api.USBEndpoint.USBEndpoint api.USBEndpoint.direction api.USBEndpoint.endpointNumber api.USBEndpoint.packetSize api.USBEndpoint.type api.USBEndpoint.worker_support api.USBInTransferResult api.USBInTransferResult.USBInTransferResult api.USBInTransferResult.data api.USBInTransferResult.status api.USBInTransferResult.worker_support api.USBInterface api.USBInterface.USBInterface api.USBInterface.alternate api.USBInterface.alternates api.USBInterface.claimed api.USBInterface.interfaceNumber api.USBInterface.worker_support api.USBIsochronousInTransferPacket api.USBIsochronousInTransferPacket.USBIsochronousInTransferPacket api.USBIsochronousInTransferPacket.data api.USBIsochronousInTransferPacket.status api.USBIsochronousInTransferPacket.worker_support api.USBIsochronousInTransferResult api.USBIsochronousInTransferResult.USBIsochronousInTransferResult api.USBIsochronousInTransferResult.data api.USBIsochronousInTransferResult.packets api.USBIsochronousInTransferResult.worker_support api.USBIsochronousOutTransferPacket api.USBIsochronousOutTransferPacket.USBIsochronousOutTransferPacket api.USBIsochronousOutTransferPacket.bytesWritten api.USBIsochronousOutTransferPacket.status api.USBIsochronousOutTransferPacket.worker_support api.USBIsochronousOutTransferResult api.USBIsochronousOutTransferResult.USBIsochronousOutTransferResult api.USBIsochronousOutTransferResult.packets api.USBIsochronousOutTransferResult.worker_support api.USBOutTransferResult api.USBOutTransferResult.USBOutTransferResult api.USBOutTransferResult.bytesWritten api.USBOutTransferResult.status api.USBOutTransferResult.worker_support api.WorkerNavigator.usb html.elements.iframe.allow.usb http.headers.Permissions-Policy.usb
webvr	WebVR	The navigator.getVRDisplays() API represents virtual reality (VR) devices, including sensors and head-mounted displays.	api.Gamepad.displayId api.Navigator.activeVRDisplays api.Navigator.activeVRDisplays.secure_context_required api.Navigator.getVRDisplays api.PositionSensorVRDevice api.PositionSensorVRDevice.getImmediateState api.PositionSensorVRDevice.getState api.PositionSensorVRDevice.resetSensor api.VRDisplay api.VRDisplay.cancelAnimationFrame api.VRDisplay.capabilities api.VRDisplay.depthFar api.VRDisplay.depthNear api.VRDisplay.displayId api.VRDisplay.displayName api.VRDisplay.exitPresent api.VRDisplay.getEyeParameters api.VRDisplay.getFrameData api.VRDisplay.getImmediatePose api.VRDisplay.getLayers api.VRDisplay.getPose api.VRDisplay.isConnected api.VRDisplay.isPresenting api.VRDisplay.requestAnimationFrame api.VRDisplay.requestPresent api.VRDisplay.resetPose api.VRDisplay.stageParameters api.VRDisplay.submitFrame api.VRDisplayCapabilities api.VRDisplayCapabilities.canPresent api.VRDisplayCapabilities.hasExternalDisplay api.VRDisplayCapabilities.hasOrientation api.VRDisplayCapabilities.hasPosition api.VRDisplayCapabilities.maxLayers api.VRDisplayEvent api.VRDisplayEvent.VRDisplayEvent api.VRDisplayEvent.display api.VRDisplayEvent.reason api.VREyeParameters api.VREyeParameters.fieldOfView api.VREyeParameters.maximumFieldOfView api.VREyeParameters.minimumFieldOfView api.VREyeParameters.offset api.VREyeParameters.renderHeight api.VREyeParameters.renderWidth api.VRFieldOfView api.VRFieldOfView.downDegrees api.VRFieldOfView.leftDegrees api.VRFieldOfView.rightDegrees api.VRFieldOfView.upDegrees api.VRFrameData api.VRFrameData.VRFrameData api.VRFrameData.leftProjectionMatrix api.VRFrameData.leftViewMatrix api.VRFrameData.pose api.VRFrameData.rightProjectionMatrix api.VRFrameData.rightViewMatrix api.VRFrameData.timestamp api.VRPose api.VRPose.angularAcceleration api.VRPose.angularVelocity api.VRPose.linearAcceleration api.VRPose.linearVelocity api.VRPose.orientation api.VRPose.position api.VRStageParameters api.VRStageParameters.sittingToStandingTransform api.VRStageParameters.sizeX api.VRStageParameters.sizeY api.Window.vrdisplayactivate_event api.Window.vrdisplayconnect_event api.Window.vrdisplaydeactivate_event api.Window.vrdisplaydisconnect_event api.Window.vrdisplaypresentchange_event
webvtt	WebVTT	WebVTT is a captions and subtitles format. WebVTT files are loaded using the <track> element, and the VTTCue API can be used to create or update cues dynamically.	api.VTTCue api.VTTCue.VTTCue api.VTTCue.getCueAsHTML api.VTTCue.text api.VTTCue.text.all_html_character_references
webvtt-cue-alignment	WebVTT cue alignment	The WebVTT cue alignment settings control which part of the cue is aligned with the given line and position. Cue alignment is set using line and position settings in WebVTT files or the lineAlign and positionAlign properties of VTTCue using JavaScript.	api.VTTCue.lineAlign api.VTTCue.positionAlign
webvtt-cue-settings	WebVTT cue settings	The VTTCue API updates various aspects of cues dynamically, such as alignment, size and position.	api.VTTCue.align api.VTTCue.line api.VTTCue.position api.VTTCue.size api.VTTCue.snapToLines api.VTTCue.vertical css.selectors.cue css.selectors.cue.selector_argument
webvtt-regions	WebVTT regions	WebVTT regions set the areas of the video where captions or subtitles should be rendered, such as placing roll-up captions used for live captions.	api.VTTCue.region api.VTTRegion api.VTTRegion.VTTRegion api.VTTRegion.id api.VTTRegion.lines api.VTTRegion.regionAnchorX api.VTTRegion.regionAnchorY api.VTTRegion.scroll api.VTTRegion.viewportAnchorX api.VTTRegion.viewportAnchorY api.VTTRegion.width
webxr-anchors	Anchors (WebXR)	An XRAnchor object keeps track of a pose that is fixed relative to the real world. Anchors build an illusion that the placed objects are really present in the user's environment.	api.XRAnchor api.XRAnchor.anchorSpace api.XRAnchor.delete api.XRAnchorSet api.XRAnchorSet.@@iterator api.XRAnchorSet.entries api.XRAnchorSet.forEach api.XRAnchorSet.has api.XRAnchorSet.keys api.XRAnchorSet.size api.XRAnchorSet.values api.XRFrame.createAnchor api.XRFrame.trackedAnchors api.XRHitTestResult.createAnchor
webxr-ar	Augmented reality	The "immersive-ar" value for navigator.xr.requestSession() starts an augmented reality WebXR session that renders content aligned with the visible environment.	api.XRSession.environmentBlendMode api.XRSession.interactionMode api.XRView.isFirstPersonObserver
webxr-camera	Raw camera access for WebXR	The XRView.camera property provides direct access to pose-synchronized camera images within a WebXR session.	api.XRCamera api.XRCamera.height api.XRCamera.width api.XRView.camera api.XRWebGLBinding.getCameraImage
webxr-depth-sensing	Depth sensing	An XRDepthInformation object represents a measurement of the distance from the user's device to the real-world geometry in the user's environment.	api.XRCPUDepthInformation api.XRCPUDepthInformation.data api.XRCPUDepthInformation.getDepthInMeters api.XRDepthInformation api.XRDepthInformation.height api.XRDepthInformation.normDepthBufferFromNormView api.XRDepthInformation.rawValueToMeters api.XRDepthInformation.width api.XRFrame.getDepthInformation api.XRSession.depthDataFormat api.XRSession.depthUsage api.XRWebGLBinding.getDepthInformation api.XRWebGLDepthInformation api.XRWebGLDepthInformation.texture
webxr-device	WebXR	The navigator.xr API represents the browser's virtual reality or augmented reality system. You can use to request a WebXR session.	api.Navigator.xr api.WebGL2RenderingContext.makeXRCompatible api.WebGLRenderingContext.makeXRCompatible api.XRBoundedReferenceSpace api.XRBoundedReferenceSpace.boundsGeometry api.XRFrame api.XRFrame.getPose api.XRFrame.getViewerPose api.XRFrame.session api.XRInputSource api.XRInputSource.gripSpace api.XRInputSource.handedness api.XRInputSource.profiles api.XRInputSource.targetRayMode api.XRInputSource.targetRaySpace api.XRInputSourceArray api.XRInputSourceArray.@@iterator api.XRInputSourceArray.entries api.XRInputSourceArray.forEach api.XRInputSourceArray.keys api.XRInputSourceArray.length api.XRInputSourceArray.values api.XRInputSourceEvent api.XRInputSourceEvent.XRInputSourceEvent api.XRInputSourceEvent.frame api.XRInputSourceEvent.inputSource api.XRInputSourcesChangeEvent api.XRInputSourcesChangeEvent.XRInputSourcesChangeEvent api.XRInputSourcesChangeEvent.added api.XRInputSourcesChangeEvent.removed api.XRInputSourcesChangeEvent.session api.XRLayer api.XRPose api.XRPose.angularVelocity api.XRPose.emulatedPosition api.XRPose.linearVelocity api.XRPose.transform api.XRReferenceSpace api.XRReferenceSpace.getOffsetReferenceSpace api.XRReferenceSpace.reset_event api.XRReferenceSpaceEvent api.XRReferenceSpaceEvent.XRReferenceSpaceEvent api.XRReferenceSpaceEvent.referenceSpace api.XRReferenceSpaceEvent.transform api.XRRenderState api.XRRenderState.baseLayer api.XRRenderState.depthFar api.XRRenderState.depthNear api.XRRenderState.inlineVerticalFieldOfView api.XRRigidTransform api.XRRigidTransform.XRRigidTransform api.XRRigidTransform.inverse api.XRRigidTransform.matrix api.XRRigidTransform.orientation api.XRRigidTransform.position api.XRSession api.XRSession.cancelAnimationFrame api.XRSession.enabledFeatures api.XRSession.end api.XRSession.end_event api.XRSession.inputSources api.XRSession.inputsourceschange_event api.XRSession.renderState api.XRSession.requestAnimationFrame api.XRSession.requestReferenceSpace api.XRSession.select_event api.XRSession.selectend_event api.XRSession.selectstart_event api.XRSession.squeeze_event api.XRSession.squeezeend_event api.XRSession.squeezestart_event api.XRSession.updateRenderState api.XRSession.visibilityState api.XRSession.visibilitychange_event api.XRSessionEvent api.XRSessionEvent.XRSessionEvent api.XRSessionEvent.session api.XRSpace api.XRSystem api.XRSystem.devicechange_event api.XRSystem.isSessionSupported api.XRSystem.requestSession api.XRView api.XRView.eye api.XRView.projectionMatrix api.XRView.recommendedViewportScale api.XRView.requestViewportScale api.XRView.transform api.XRViewerPose api.XRViewerPose.views api.XRViewport api.XRViewport.height api.XRViewport.width api.XRViewport.x api.XRViewport.y api.XRWebGLLayer api.XRWebGLLayer.XRWebGLLayer api.XRWebGLLayer.antialias api.XRWebGLLayer.fixedFoveation api.XRWebGLLayer.framebuffer api.XRWebGLLayer.framebufferHeight api.XRWebGLLayer.framebufferWidth api.XRWebGLLayer.getNativeFramebufferScaleFactor_static api.XRWebGLLayer.getViewport api.XRWebGLLayer.ignoreDepthValues html.elements.iframe.allow.xr-spatial-tracking http.headers.Permissions-Policy.xr-spatial-tracking
webxr-dom-overlays	DOM overlays for WebXR	A DOM overlay shows 2D DOM content as an interactive, transparent layer on top of a WebXR application's WebGL content and camera image.	api.Element.beforexrselect_event api.XRSession.domOverlayState css.selectors.xr-overlay
webxr-gamepads	Gamepad (WebXR)	The gamepad attribute of an XRInputSource represents an XR input device, such as a motion controller, that reports data from physical inputs (such as buttons, touch pads, and triggers).	api.XRInputSource.gamepad
webxr-hand-input	Hand input	An XRHand object, from the hand attribute of an XRInputSource object, represents a WebXR session's fully-articulated hand tracking model.	api.XRFrame.fillJointRadii api.XRFrame.fillPoses api.XRFrame.getJointPose api.XRHand api.XRHand.@@iterator api.XRHand.entries api.XRHand.forEach api.XRHand.get api.XRHand.keys api.XRHand.size api.XRHand.values api.XRInputSource.hand api.XRJointPose api.XRJointPose.radius api.XRJointSpace api.XRJointSpace.jointName
webxr-hit-test	Hit test	The getHitTestResults() method of an XRFrame object helps place objects in an augmented reality session by finding where cast rays intersect with real-world geometry.	api.XRFrame.getHitTestResults api.XRFrame.getHitTestResultsForTransientInput api.XRHitTestResult api.XRHitTestResult.getPose api.XRHitTestSource api.XRHitTestSource.cancel api.XRRay api.XRRay.XRRay api.XRRay.direction api.XRRay.matrix api.XRRay.origin api.XRSession.requestHitTestSource api.XRSession.requestHitTestSourceForTransientInput api.XRTransientInputHitTestResult api.XRTransientInputHitTestResult.inputSource api.XRTransientInputHitTestResult.results api.XRTransientInputHitTestSource api.XRTransientInputHitTestSource.cancel
webxr-layers	Layers (WebXR)	WebXR layer types, such as XRCylinderLayer, XRCylinderLayer, XREquirectLayer, XRProjectionLayer or XRQuadLayer, are managed by the system compositor, to reduce latency or resampling.	api.XRCompositionLayer api.XRCompositionLayer.blendTextureSourceAlpha api.XRCompositionLayer.destroy api.XRCompositionLayer.layout api.XRCompositionLayer.mipLevels api.XRCompositionLayer.needsRedraw api.XRCubeLayer api.XRCubeLayer.orientation api.XRCubeLayer.redraw_event api.XRCubeLayer.space api.XRCylinderLayer api.XRCylinderLayer.aspectRatio api.XRCylinderLayer.centralAngle api.XRCylinderLayer.radius api.XRCylinderLayer.redraw_event api.XRCylinderLayer.space api.XRCylinderLayer.transform api.XREquirectLayer api.XREquirectLayer.centralHorizontalAngle api.XREquirectLayer.lowerVerticalAngle api.XREquirectLayer.radius api.XREquirectLayer.redraw_event api.XREquirectLayer.space api.XREquirectLayer.transform api.XREquirectLayer.upperVerticalAngle api.XRLayerEvent api.XRLayerEvent.XRLayerEvent api.XRLayerEvent.layer api.XRMediaBinding api.XRMediaBinding.XRMediaBinding api.XRMediaBinding.createCylinderLayer api.XRMediaBinding.createEquirectLayer api.XRMediaBinding.createQuadLayer api.XRProjectionLayer api.XRProjectionLayer.fixedFoveation api.XRProjectionLayer.ignoreDepthValues api.XRProjectionLayer.textureArrayLength api.XRProjectionLayer.textureHeight api.XRProjectionLayer.textureWidth api.XRQuadLayer api.XRQuadLayer.height api.XRQuadLayer.redraw_event api.XRQuadLayer.space api.XRQuadLayer.transform api.XRQuadLayer.width api.XRRenderState.layers api.XRSubImage api.XRSubImage.viewport api.XRWebGLBinding api.XRWebGLBinding.XRWebGLBinding api.XRWebGLBinding.createCubeLayer api.XRWebGLBinding.createCylinderLayer api.XRWebGLBinding.createEquirectLayer api.XRWebGLBinding.createProjectionLayer api.XRWebGLBinding.createQuadLayer api.XRWebGLBinding.getSubImage api.XRWebGLBinding.getViewSubImage api.XRWebGLBinding.nativeProjectionScaleFactor api.XRWebGLSubImage api.XRWebGLSubImage.colorTexture api.XRWebGLSubImage.colorTextureHeight api.XRWebGLSubImage.colorTextureWidth api.XRWebGLSubImage.depthStencilTexture api.XRWebGLSubImage.imageIndex
webxr-lighting-estimation	Lighting estimation	The XRLightProbe and XRLightEstimate objects represent real-world environmental lighting conditions during a WebXR session.	api.XRFrame.getLightEstimate api.XRLightEstimate api.XRLightEstimate.primaryLightDirection api.XRLightEstimate.primaryLightIntensity api.XRLightEstimate.sphericalHarmonicsCoefficients api.XRLightProbe api.XRLightProbe.probeSpace api.XRLightProbe.reflectionchange_event api.XRSession.preferredReflectionFormat api.XRSession.requestLightProbe api.XRWebGLBinding.getReflectionCubeMap
wheel-events	Wheel events	The wheel event fires when the user moves a mouse wheel or similar spatially rotating input device.	api.Element.wheel_event api.WheelEvent api.WheelEvent.WheelEvent api.WheelEvent.deltaMode api.WheelEvent.deltaX api.WheelEvent.deltaY api.WheelEvent.deltaZ api.WheelEvent.pinch_to_zoom_support
where	:where()	The :where() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list. It is functionally equivalent to the selectors in the list, but doesn't affect the CSS rule specificity.	css.selectors.where css.selectors.where.forgiving_selector_list
white-space	white-space	The white-space CSS property sets how white space is collapsed and how lines wrap. It is a shorthand for white-space-collapse and text-wrap-mode.	css.properties.white-space css.properties.white-space.break-spaces css.properties.white-space.normal css.properties.white-space.nowrap css.properties.white-space.pre css.properties.white-space.pre-line css.properties.white-space.pre-wrap css.properties.white-space.shorthand_values css.properties.white-space.svg_elements css.properties.white-space.textarea_support svg.global_attributes.white-space
white-space-collapse	white-space-collapse	The white-space-collapse CSS property sets whether new line characters are shown as line breaks, and whether multiple consecutive spaces are all displayed or combined.	css.properties.white-space-collapse css.properties.white-space-collapse.break-spaces css.properties.white-space-collapse.collapse css.properties.white-space-collapse.preserve css.properties.white-space-collapse.preserve-breaks css.properties.white-space-collapse.preserve-spaces
widows-orphans	Widows and orphans	The widows and orphans CSS properties set the minimum lines included in a text fragment created by page, column, or region breaks.	css.properties.orphans css.properties.widows
width-height	Width and height	The width and height CSS properties set the preferred physical size of an element.	css.properties.height css.properties.height.auto css.properties.width css.properties.width.auto css.properties.width.is_animatable css.types.dimension css.types.length css.types.length-percentage css.types.percentage
will-change	will-change	The will-change CSS property gives hints to the browser about expected changes to an element's scroll position, contents, or style. These hints allow browsers to optimize for upcoming style changes.	css.properties.will-change css.properties.will-change.auto css.properties.will-change.contents css.properties.will-change.scroll-position
window	Window	The window global object represents a browser tab or iframe and its relationship to the document and other tabs. It's also a generic global object, under which many other APIs are located.	api.Window api.Window.DOMContentLoaded_event api.Window.blur_event api.Window.close api.Window.closed api.Window.error_event api.Window.focus api.Window.focus_event api.Window.frameElement api.Window.frames api.Window.innerHeight api.Window.innerWidth api.Window.length api.Window.load_event api.Window.moveBy api.Window.moveTo api.Window.name api.Window.open api.Window.open.features_parameter_popup api.Window.open.once_per_event api.Window.opener api.Window.outerHeight api.Window.outerWidth api.Window.parent api.Window.resizeBy api.Window.resizeTo api.Window.resize_event api.Window.screen api.Window.screenLeft api.Window.screenTop api.Window.screenX api.Window.screenY api.Window.self api.Window.stop api.Window.top api.Window.window
window-controls-overlay	Window Controls Overlay	The display_override:\ ["window-controls-overlay"] web application manifest member shows content in the title bar area of a progressive web app that is installed on a desktop device.	api.Navigator.windowControlsOverlay api.WindowControlsOverlay api.WindowControlsOverlay.geometrychange_event api.WindowControlsOverlay.getTitlebarAreaRect api.WindowControlsOverlay.visible api.WindowControlsOverlayGeometryChangeEvent api.WindowControlsOverlayGeometryChangeEvent.WindowControlsOverlayGeometryChangeEvent api.WindowControlsOverlayGeometryChangeEvent.titlebarAreaRect api.WindowControlsOverlayGeometryChangeEvent.visible css.properties.custom-property.env.titlebar-area-height css.properties.custom-property.env.titlebar-area-width css.properties.custom-property.env.titlebar-area-x css.properties.custom-property.env.titlebar-area-y html.manifest.display_override.window-controls-overlay
window-management	Window management	The window.getScreenDetails() method gets information about the screens on a device, which you can use to place new windows on a specific screen with window.open().	api.Element.requestFullscreen.options_screen_parameter api.Permissions.permission_window-management api.Screen.change_event api.Screen.isExtended api.ScreenDetailed api.ScreenDetailed.availLeft api.ScreenDetailed.availTop api.ScreenDetailed.devicePixelRatio api.ScreenDetailed.isInternal api.ScreenDetailed.isPrimary api.ScreenDetailed.label api.ScreenDetailed.left api.ScreenDetailed.top api.ScreenDetails api.ScreenDetails.currentScreen api.ScreenDetails.currentscreenchange_event api.ScreenDetails.screens api.ScreenDetails.screenschange_event api.Window.getScreenDetails api.Window.moveTo.relative-multi-screen api.Window.open.relative-multi-screen api.Window.screenLeft.relative-multi-screen api.Window.screenTop.relative-multi-screen api.Window.screenX.relative-multi-screen api.Window.screenY.relative-multi-screen html.elements.iframe.allow.window-management http.headers.Permissions-Policy.window-management
with	with	The with JavaScript statement adds a given object to the chain of scopes used to evaluate names.	javascript.builtins.Array.@@unscopables javascript.builtins.Symbol.unscopables javascript.statements.with
word-break	word-break	The word-break CSS property sets how lines break within words.	css.properties.word-break css.properties.word-break.break-all css.properties.word-break.keep-all css.properties.word-break.normal
word-break-auto-phrase	word-break: auto-phrase	The word-break: auto-phrase CSS declaration specifies that wrapping should occur at natural phrase boundaries, especially in CJK languages.	css.properties.word-break.auto-phrase
word-break-break-word	`word-break: break-word`	The word-break: break-word CSS declaration sets word breaks to occur according to their customary rules. Superseded by overflow-wrap: anywhere.	css.properties.word-break.break-word
word-spacing	word-spacing	The word-spacing CSS property sets the amount of white space between words.	css.properties.word-spacing css.properties.word-spacing.normal svg.global_attributes.word-spacing
writing-mode	writing-mode	The writing-mode CSS property sets whether text is laid out horizontally or vertically, and left to right, or right to left.	css.properties.writing-mode css.properties.writing-mode.horizontal-tb css.properties.writing-mode.sideways-lr css.properties.writing-mode.sideways-rl css.properties.writing-mode.vertical-lr css.properties.writing-mode.vertical-rl svg.global_attributes.writing-mode
writing-mode-svg-values	writing-mode SVG 1.1 values	The lr, lr-tb, rl, rl-tb, tb, and tb-rl keyword values for the writing-mode CSS property set the text direction for elements in SVG 1.1 documents.	css.properties.writing-mode.lr css.properties.writing-mode.lr-tb css.properties.writing-mode.rl css.properties.writing-mode.rl-tb css.properties.writing-mode.tb css.properties.writing-mode.tb-rl
writingsuggestions	writingsuggestions	The writingsuggestions HTML attribute turns on or off a browser's writing suggestions. Writing suggestions vary by browser. For example, if turned on then a browser might show inline text completions accepted by pressing Tab.	api.HTMLElement.writingSuggestions html.global_attributes.writingsuggestions
xhr	XMLHttpRequest	The XMLHttpRequest API makes HTTP requests. It's the predecessor to fetch(). Also known as XHR.	api.FormData api.FormData.@@iterator api.FormData.FormData api.FormData.FormData.submitter api.FormData.append api.FormData.append.filename_parameter api.FormData.delete api.FormData.entries api.FormData.forEach api.FormData.get api.FormData.getAll api.FormData.has api.FormData.keys api.FormData.set api.FormData.values api.FormData.worker_support api.ProgressEvent api.ProgressEvent.ProgressEvent api.ProgressEvent.lengthComputable api.ProgressEvent.loaded api.ProgressEvent.total api.ProgressEvent.worker_support api.XMLHttpRequest api.XMLHttpRequest.XMLHttpRequest api.XMLHttpRequest.abort api.XMLHttpRequest.abort_event api.XMLHttpRequest.authorization_removed_cross_origin api.XMLHttpRequest.error_event api.XMLHttpRequest.getAllResponseHeaders api.XMLHttpRequest.getAllResponseHeaders.header_names_lowercase api.XMLHttpRequest.getResponseHeader api.XMLHttpRequest.load_event api.XMLHttpRequest.loadend_event api.XMLHttpRequest.loadstart_event api.XMLHttpRequest.open api.XMLHttpRequest.overrideMimeType api.XMLHttpRequest.progress_event api.XMLHttpRequest.readyState api.XMLHttpRequest.readystatechange_event api.XMLHttpRequest.response api.XMLHttpRequest.responseText api.XMLHttpRequest.responseType api.XMLHttpRequest.responseType.arraybuffer_value api.XMLHttpRequest.responseType.blob_value api.XMLHttpRequest.responseType.document_value api.XMLHttpRequest.responseType.json_value api.XMLHttpRequest.responseURL api.XMLHttpRequest.responseXML api.XMLHttpRequest.send api.XMLHttpRequest.send.body_ArrayBufferView_type api.XMLHttpRequest.send.body_ArrayBuffer_type api.XMLHttpRequest.send.body_Blob_type api.XMLHttpRequest.send.body_FormData_type api.XMLHttpRequest.send.body_URLSearchParams_type api.XMLHttpRequest.setRequestHeader api.XMLHttpRequest.status api.XMLHttpRequest.statusText api.XMLHttpRequest.timeout api.XMLHttpRequest.timeout_event api.XMLHttpRequest.upload api.XMLHttpRequest.withCredentials api.XMLHttpRequest.worker_support api.XMLHttpRequestEventTarget api.XMLHttpRequestUpload api.XMLHttpRequestUpload.abort_event api.XMLHttpRequestUpload.error_event api.XMLHttpRequestUpload.load_event api.XMLHttpRequestUpload.loadend_event api.XMLHttpRequestUpload.loadstart_event api.XMLHttpRequestUpload.progress_event api.XMLHttpRequestUpload.timeout_event
xml-serializer	XMLSerializer	The XMLSerializer API provides the serializeToString() method to construct an XML string representing a DOM tree.	api.XMLSerializer api.XMLSerializer.XMLSerializer api.XMLSerializer.serializeToString
xpath	XPath	The document.evaluate() method selects elements in an HTML or XML document based on an expression of XPath, a domain specific language for querying XML documents. Also known as XML Path Language.	api.Document.createExpression api.Document.evaluate api.XPathEvaluator api.XPathEvaluator.XPathEvaluator api.XPathEvaluator.createExpression api.XPathEvaluator.evaluate api.XPathExpression api.XPathExpression.evaluate api.XPathResult api.XPathResult.booleanValue api.XPathResult.invalidIteratorState api.XPathResult.iterateNext api.XPathResult.numberValue api.XPathResult.resultType api.XPathResult.singleNodeValue api.XPathResult.snapshotItem api.XPathResult.snapshotLength api.XPathResult.stringValue
xslt	XSLT	The XSLTProcessor API transforms XML documents into new XML or HTML documents, using XSLT stylesheets. You can use XSLT to convert data between different XML schemas or to convert XML data into web pages or PDF documents. Also known as Extensible Stylesheet Language Transformations.	api.XSLTProcessor api.XSLTProcessor.XSLTProcessor api.XSLTProcessor.clearParameters api.XSLTProcessor.getParameter api.XSLTProcessor.importStylesheet api.XSLTProcessor.removeParameter api.XSLTProcessor.reset api.XSLTProcessor.setParameter api.XSLTProcessor.transformToDocument api.XSLTProcessor.transformToFragment
z-index	z-index	The z-index CSS property orders overlapping elements, with higher values appearing in front of or on top of lower values.	css.properties.z-index css.properties.z-index.auto css.properties.z-index.negative_values css.types.integer
zoom	zoom	The zoom CSS property scales the size of an element. Unlike the transform property, a zoomed element affects page layout.	css.properties.zoom
zstd	Zstandard compression	Zstandard or zstd is fast lossless compression algorithm. When used as a content encoding, it is often faster and offers better compression than brotli.	http.headers.Content-Encoding.zstd