{
 "compat_features": [
  "api.DedicatedWorkerGlobalScope.messageerror_event",
  "api.MessagePort.messageerror_event",
  "api.ServiceWorkerContainer.messageerror_event",
  "api.ServiceWorkerGlobalScope.messageerror_event",
  "api.Window.messageerror_event",
  "api.Worker.messageerror_event"
 ],
 "description": "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.",
 "description_html": "The <code>messageerror</code> 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.",
 "group": [
  "messaging"
 ],
 "kind": "feature",
 "name": "messageerror",
 "spec": [
  "https://html.spec.whatwg.org/multipage/indices.html#event-messageerror",
  "https://w3c.github.io/ServiceWorker/#eventdef-serviceworkerglobalscope-messageerror"
 ],
 "status": {
  "baseline": "high",
  "baseline_high_date": "2025-09-27",
  "baseline_low_date": "2023-03-27",
  "by_compat_key": {
   "api.DedicatedWorkerGlobalScope.messageerror_event": {
    "baseline": "high",
    "baseline_high_date": "2025-09-27",
    "baseline_low_date": "2023-03-27",
    "support": {
     "chrome": "60",
     "chrome_android": "60",
     "edge": "18",
     "firefox": "57",
     "firefox_android": "57",
     "safari": "16.4",
     "safari_ios": "16.4"
    }
   },
   "api.MessagePort.messageerror_event": {
    "baseline": "high",
    "baseline_high_date": "2025-09-27",
    "baseline_low_date": "2023-03-27",
    "support": {
     "chrome": "60",
     "chrome_android": "60",
     "edge": "18",
     "firefox": "57",
     "firefox_android": "57",
     "safari": "16.4",
     "safari_ios": "16.4"
    }
   },
   "api.ServiceWorkerContainer.messageerror_event": {
    "baseline": "high",
    "baseline_high_date": "2025-09-27",
    "baseline_low_date": "2023-03-27",
    "support": {
     "chrome": "80",
     "chrome_android": "80",
     "edge": "80",
     "firefox": "65",
     "firefox_android": "65",
     "safari": "16.4",
     "safari_ios": "16.4"
    }
   },
   "api.ServiceWorkerGlobalScope.messageerror_event": {
    "baseline": false,
    "support": {
     "chrome": "81",
     "chrome_android": "81",
     "edge": "81",
     "firefox": "65",
     "firefox_android": "65"
    }
   },
   "api.Window.messageerror_event": {
    "baseline": "high",
    "baseline_high_date": "2025-09-27",
    "baseline_low_date": "2023-03-27",
    "support": {
     "chrome": "60",
     "chrome_android": "60",
     "edge": "18",
     "firefox": "57",
     "firefox_android": "57",
     "safari": "16.4",
     "safari_ios": "16.4"
    }
   },
   "api.Worker.messageerror_event": {
    "baseline": false,
    "support": {
     "firefox": "57",
     "firefox_android": "57",
     "safari": "16.4",
     "safari_ios": "16.4"
    }
   }
  },
  "support": {
   "chrome": "60",
   "chrome_android": "60",
   "edge": "18",
   "firefox": "57",
   "firefox_android": "57",
   "safari": "16.4",
   "safari_ios": "16.4"
  }
 },
 "id": "messageerror",
 "groups": [
  "messaging"
 ],
 "specs": [
  {
   "url": "https://html.spec.whatwg.org/multipage/indices.html#event-messageerror",
   "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": [],
    "repository": "https://github.com/whatwg/html",
    "pages": [
     "https://html.spec.whatwg.org/multipage/introduction.html",
     "https://html.spec.whatwg.org/multipage/infrastructure.html",
     "https://html.spec.whatwg.org/multipage/common-microsyntaxes.html",
     "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",
     "https://html.spec.whatwg.org/multipage/obsolete.html",
     "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"
    ],
    "filename": "index.html"
   },
   "organization": "WHATWG",
   "groups": [
    {
     "name": "HTML Workstream",
     "url": "https://html.spec.whatwg.org/multipage/"
    }
   ],
   "title": "HTML",
   "source": "whatwg",
   "shortTitle": "HTML",
   "categories": [
    "browser"
   ],
   "standing": "good",
   "tests": {
    "repository": "https://github.com/web-platform-tests/wpt",
    "testPaths": [
     "close-watcher",
     "custom-elements",
     "eventsource",
     "html",
     "imagebitmap-renderingcontext",
     "import-maps",
     "navigation-api",
     "webmessaging",
     "webstorage",
     "workers",
     "worklets",
     "x-frame-options"
    ],
    "excludePaths": [
     "html/cross-origin-embedder-policy/credentialless",
     "html/dom/partial-updates/tentative",
     "html/cross-origin-embedder-policy/credentialless"
    ]
   },
   "fragment": "event-messageerror"
  },
  {
   "url": "https://w3c.github.io/ServiceWorker/#eventdef-serviceworkerglobalscope-messageerror",
   "seriesComposition": "full",
   "shortname": "service-workers",
   "series": {
    "shortname": "service-workers",
    "currentSpecification": "service-workers",
    "title": "Service Workers",
    "shortTitle": "Service Workers",
    "releaseUrl": "https://www.w3.org/TR/service-workers/",
    "nightlyUrl": "https://w3c.github.io/ServiceWorker/"
   },
   "organization": "W3C",
   "groups": [
    {
     "name": "Web Applications Working Group",
     "url": "https://www.w3.org/groups/wg/webapps/"
    }
   ],
   "release": {
    "url": "https://www.w3.org/TR/service-workers/",
    "status": "Candidate Recommendation Draft",
    "filename": "Overview.html"
   },
   "nightly": {
    "url": "https://w3c.github.io/ServiceWorker/",
    "status": "Editor's Draft",
    "alternateUrls": [],
    "repository": "https://github.com/w3c/ServiceWorker",
    "sourcePath": "index.bs",
    "filename": "index.html"
   },
   "title": "Service Workers Nightly",
   "source": "w3c",
   "shortTitle": "Service Workers Nightly",
   "categories": [
    "browser"
   ],
   "standing": "good",
   "tests": {
    "repository": "https://github.com/web-platform-tests/wpt",
    "testPaths": [
     "service-workers"
    ]
   },
   "fragment": "eventdef-serviceworkerglobalscope-messageerror"
  }
 ],
 "mdnUrls": [
  {
   "slug": "Web/API/Window/messageerror_event",
   "title": "Window: messageerror event",
   "anchor": null,
   "url": "https://developer.mozilla.org/docs/Web/API/Window/messageerror_event"
  },
  {
   "slug": "Web/API/Worker/messageerror_event",
   "title": "Worker: messageerror event",
   "anchor": null,
   "url": "https://developer.mozilla.org/docs/Web/API/Worker/messageerror_event"
  }
 ],
 "standardPositions": [],
 "hasNegativeStandardPosition": false,
 "stateOfSurveys": [],
 "chromeUseCounters": {},
 "interop": [],
 "wpt": {
  "url": "https://wpt.fyi/results?q=feature:messageerror"
 },
 "developerSignals": null,
 "bugs": {
  "chrome": [
   "https://bugs.chromium.org/p/chromium/issues/detail?id=1024132",
   "https://bugs.chromium.org/p/chromium/issues/detail?id=926102",
   "https://bugs.chromium.org/p/chromium/issues/detail?id=714582"
  ]
 },
 "baselineLowDateAsObject": "2023-03-27T00:00:00.000Z",
 "baselineHighDateAsObject": "2025-09-27T00:00:00.000Z"
}