{
 "compat_features": [
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  "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"
 ],
 "description": "The <slot> HTML element is a placeholder inside a web component where consumers of the component can insert their own markup.",
 "description_html": "The <code>&#x3C;slot></code> HTML element is a placeholder inside a web component where consumers of the component can insert their own markup.",
 "group": [
  "html-elements",
  "web-components"
 ],
 "kind": "feature",
 "name": "<slot>",
 "spec": [
  "https://html.spec.whatwg.org/multipage/scripting.html#the-slot-element"
 ],
 "status": {
  "baseline": "high",
  "baseline_high_date": "2022-07-15",
  "baseline_low_date": "2020-01-15",
  "by_compat_key": {
   "api.Element.assignedSlot": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "api.Element.slot": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
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     "chrome_android": "53",
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     "firefox_android": "63",
     "safari": "10",
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    }
   },
   "api.HTMLSlotElement": {
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    "baseline_low_date": "2020-01-15",
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     "chrome_android": "53",
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     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "api.HTMLSlotElement.assignedElements": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
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     "chrome_android": "65",
     "edge": "79",
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     "firefox_android": "66",
     "safari": "12.1",
     "safari_ios": "12.2"
    }
   },
   "api.HTMLSlotElement.assignedNodes": {
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    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "api.HTMLSlotElement.name": {
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    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "api.HTMLSlotElement.slotchange_event": {
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    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
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     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10.1",
     "safari_ios": "10.3"
    }
   },
   "api.Text.assignedSlot": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "css.selectors.slotted": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "50",
     "chrome_android": "50",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "html.elements.slot": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "html.elements.slot.name": {
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    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   },
   "html.global_attributes.slot": {
    "baseline": "high",
    "baseline_high_date": "2022-07-15",
    "baseline_low_date": "2020-01-15",
    "support": {
     "chrome": "53",
     "chrome_android": "53",
     "edge": "79",
     "firefox": "63",
     "firefox_android": "63",
     "safari": "10",
     "safari_ios": "10"
    }
   }
  },
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   "chrome_android": "53",
   "edge": "79",
   "firefox": "63",
   "firefox_android": "63",
   "safari": "10",
   "safari_ios": "10"
  }
 },
 "id": "slot",
 "groups": [
  "html-elements",
  "web-components"
 ],
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   "url": "https://html.spec.whatwg.org/multipage/scripting.html#the-slot-element",
   "seriesComposition": "full",
   "shortname": "html",
   "series": {
    "shortname": "html",
    "currentSpecification": "html",
    "title": "HTML",
    "shortTitle": "HTML",
    "nightlyUrl": "https://html.spec.whatwg.org/multipage/"
   },
   "nightly": {
    "url": "https://html.spec.whatwg.org/multipage/",
    "status": "Living Standard",
    "sourcePath": "source",
    "alternateUrls": [],
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    "pages": [
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     "https://html.spec.whatwg.org/multipage/urls-and-fetching.html",
     "https://html.spec.whatwg.org/multipage/common-dom-interfaces.html",
     "https://html.spec.whatwg.org/multipage/structured-data.html",
     "https://html.spec.whatwg.org/multipage/dom.html",
     "https://html.spec.whatwg.org/multipage/semantics.html",
     "https://html.spec.whatwg.org/multipage/sections.html",
     "https://html.spec.whatwg.org/multipage/grouping-content.html",
     "https://html.spec.whatwg.org/multipage/text-level-semantics.html",
     "https://html.spec.whatwg.org/multipage/links.html",
     "https://html.spec.whatwg.org/multipage/edits.html",
     "https://html.spec.whatwg.org/multipage/embedded-content.html",
     "https://html.spec.whatwg.org/multipage/images.html",
     "https://html.spec.whatwg.org/multipage/iframe-embed-object.html",
     "https://html.spec.whatwg.org/multipage/media.html",
     "https://html.spec.whatwg.org/multipage/image-maps.html",
     "https://html.spec.whatwg.org/multipage/embedded-content-other.html",
     "https://html.spec.whatwg.org/multipage/tables.html",
     "https://html.spec.whatwg.org/multipage/forms.html",
     "https://html.spec.whatwg.org/multipage/input.html",
     "https://html.spec.whatwg.org/multipage/form-elements.html",
     "https://html.spec.whatwg.org/multipage/form-control-infrastructure.html",
     "https://html.spec.whatwg.org/multipage/interactive-elements.html",
     "https://html.spec.whatwg.org/multipage/scripting.html",
     "https://html.spec.whatwg.org/multipage/canvas.html",
     "https://html.spec.whatwg.org/multipage/custom-elements.html",
     "https://html.spec.whatwg.org/multipage/semantics-other.html",
     "https://html.spec.whatwg.org/multipage/microdata.html",
     "https://html.spec.whatwg.org/multipage/interaction.html",
     "https://html.spec.whatwg.org/multipage/dnd.html",
     "https://html.spec.whatwg.org/multipage/popover.html",
     "https://html.spec.whatwg.org/multipage/browsers.html",
     "https://html.spec.whatwg.org/multipage/nav-history-apis.html",
     "https://html.spec.whatwg.org/multipage/document-sequences.html",
     "https://html.spec.whatwg.org/multipage/browsing-the-web.html",
     "https://html.spec.whatwg.org/multipage/document-lifecycle.html",
     "https://html.spec.whatwg.org/multipage/speculative-loading.html",
     "https://html.spec.whatwg.org/multipage/webappapis.html",
     "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html",
     "https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html",
     "https://html.spec.whatwg.org/multipage/system-state.html",
     "https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html",
     "https://html.spec.whatwg.org/multipage/comms.html",
     "https://html.spec.whatwg.org/multipage/server-sent-events.html",
     "https://html.spec.whatwg.org/multipage/web-messaging.html",
     "https://html.spec.whatwg.org/multipage/workers.html",
     "https://html.spec.whatwg.org/multipage/worklets.html",
     "https://html.spec.whatwg.org/multipage/webstorage.html",
     "https://html.spec.whatwg.org/multipage/syntax.html",
     "https://html.spec.whatwg.org/multipage/parsing.html",
     "https://html.spec.whatwg.org/multipage/named-characters.html",
     "https://html.spec.whatwg.org/multipage/xhtml.html",
     "https://html.spec.whatwg.org/multipage/rendering.html",
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     "https://html.spec.whatwg.org/multipage/iana.html",
     "https://html.spec.whatwg.org/multipage/indices.html",
     "https://html.spec.whatwg.org/multipage/references.html",
     "https://html.spec.whatwg.org/multipage/acknowledgements.html"
    ],
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   },
   "organization": "WHATWG",
   "groups": [
    {
     "name": "HTML Workstream",
     "url": "https://html.spec.whatwg.org/multipage/"
    }
   ],
   "title": "HTML",
   "source": "whatwg",
   "shortTitle": "HTML",
   "categories": [
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   "standing": "good",
   "tests": {
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    "testPaths": [
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    "excludePaths": [
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     "html/dom/partial-updates/tentative",
     "html/cross-origin-embedder-policy/credentialless"
    ]
   },
   "fragment": "the-slot-element"
  }
 ],
 "mdnUrls": [
  {
   "slug": "Web/HTML/Reference/Elements/slot",
   "title": "`<slot>` HTML web component slot element",
   "anchor": null,
   "url": "https://developer.mozilla.org/docs/Web/HTML/Reference/Elements/slot"
  }
 ],
 "standardPositions": [],
 "hasNegativeStandardPosition": false,
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   "url": "https://2025.stateofhtml.com/en-US/features/web_components/#web_components_features",
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   "path": "dataAPI.surveys.state_of_html.html2025.web_components.web_components_features.6.entity"
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   "path": "dataAPI.surveys.state_of_html.html2024.features.all_features.33.entity"
  }
 ],
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  "url": "https://chromestatus.com/metrics/webfeature/timeline/popularity/62"
 },
 "interop": [],
 "wpt": {
  "url": "https://wpt.fyi/results?q=feature:slot"
 },
 "developerSignals": null,
 "bugs": {
  "chrome": [
   "https://bugs.chromium.org/p/chromium/issues/detail?id=1006096",
   "https://bugs.chromium.org/p/chromium/issues/detail?id=795544",
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   "https://bugs.chromium.org/p/chromium/issues/detail?id=660777"
  ]
 },
 "baselineLowDateAsObject": "2020-01-15T00:00:00.000Z",
 "baselineHighDateAsObject": "2022-07-15T00:00:00.000Z"
}