October 2023 web platform update

Now widely available on the web platform

Widely available

• AudioWorklet: The AudioWorklet API runs module code in a separate thread, specifically for non-blocking, low latency audio processing. Learn more.

• ::file-selector-button: The ::file-selector-button CSS pseudo-element selects the button of a <input type="file"> element. Learn more.

• Flexbox gap: The gap CSS property in a flexbox layout sets the size of the space between items. Learn more.

• Date and time <input> types: The <input type="date"> and <input type="time"> HTML elements represent date and time pickers in a form. Learn more.

• Intl.DisplayNames: The Intl.DisplayNames API provides localized names of language, region, script, and currency codes. Learn more.

• Intl.ListFormat: The Intl.ListFormat API creates a locale-aware formatter that turns iterable objects into localized strings. Learn more.

• 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. Learn more.

• OfflineAudioContext: The OfflineAudioContext API represents an audio processing graph that writes to an AudioBuffer instead of an output device. Learn more.

• Quotes: The quotes CSS property sets the quotation marks inserted via the content CSS property or <q> element. Learn more.

• BigInt to i64 conversion (WebAssembly): Integer values pass bidirectionally between JavaScript and WebAssembly, converted to i64 values in WebAssembly or BigInt values in JavaScript. Learn more.

• 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. Learn more.

• Weak references: The WeakRef and FinalizationRegistry objects hold references to garbage-collectable objects without creating strong references that prevent their garbage collection. Learn more.

• 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. Learn more.

Newly available on the web platform

Newly available

• ARIA attribute reflection: WAI-ARIA attributes have corresponding properties on Element and ElementInternals objects. Learn more.

• <search>: The <search> HTML element is a container that represents the parts of the web page with search functionality. Learn more.

• 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. Learn more.

• 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. Learn more.