René's URL Explorer Experiment


Title: ExtendableEvent - Web API | MDN

Open Graph Title: ExtendableEvent - Web API | MDN

Description: ExtendableEvent インターフェイスは、サービスワーカーのライフサイクルの一部として、グローバルスコープに配信された install および activate イベントの存続期間を延長します。これにより、データベーススキーマがアップグレードされて古いキャッシュエントリーが削除されるまで、機能イベント（FetchEvent など）が送出されなくなります。

Open Graph Description: ExtendableEvent インターフェイスは、サービスワーカーのライフサイクルの一部として、グローバルスコープに配信された install および activate イベントの存続期間を延長します。これにより、データベーススキーマがアップグレードされて古いキャッシュエントリーが削除されるまで、機能イベント（FetchEvent など）が送出されなくなります。

Opengraph URL: https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent

direct link

Domain: developer.mozilla.org

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Links:

メインコンテンツへスキップhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#content
検索へスキップhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#mdn-search
MDN https://developer.mozilla.org/ja/
HTML: Markup languagehttps://developer.mozilla.org/ja/docs/Web/HTML
Elementshttps://developer.mozilla.org/ja/docs/Web/HTML/Reference/Elements
Global attributeshttps://developer.mozilla.org/ja/docs/Web/HTML/Reference/Global_attributes
Attributeshttps://developer.mozilla.org/ja/docs/Web/HTML/Reference/Attributes
See all…https://developer.mozilla.org/ja/docs/Web/HTML/Reference
Responsive imageshttps://developer.mozilla.org/ja/docs/Web/HTML/Guides/Responsive_images
HTML cheatsheethttps://developer.mozilla.org/ja/docs/Web/HTML/Guides/Cheatsheet
Date & time formatshttps://developer.mozilla.org/ja/docs/Web/HTML/Guides/Date_and_time_formats
See all…https://developer.mozilla.org/ja/docs/Web/HTML/Guides
SVGhttps://developer.mozilla.org/ja/docs/Web/SVG
MathMLhttps://developer.mozilla.org/ja/docs/Web/MathML
XMLhttps://developer.mozilla.org/ja/docs/Web/XML
CSS: Styling languagehttps://developer.mozilla.org/ja/docs/Web/CSS
Propertieshttps://developer.mozilla.org/ja/docs/Web/CSS/Reference/Properties
Selectorshttps://developer.mozilla.org/ja/docs/Web/CSS/Reference/Selectors
At-ruleshttps://developer.mozilla.org/ja/docs/Web/CSS/Reference/At-rules
Valueshttps://developer.mozilla.org/ja/docs/Web/CSS/Reference/Values
See all…https://developer.mozilla.org/ja/docs/Web/CSS/Reference
Box modelhttps://developer.mozilla.org/ja/docs/Web/CSS/Guides/Box_model/Introduction
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Using the Web animation APIhttps://developer.mozilla.org/ja/docs/Web/API/Web_Animations_API/Using_the_Web_Animations_API
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Color format converterhttps://developer.mozilla.org/ja/docs/Web/CSS/Guides/Colors/Color_format_converter
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Bloghttps://developer.mozilla.org/en-US/blog/
ウェブhttps://developer.mozilla.org/ja/docs/Web
Web APIhttps://developer.mozilla.org/ja/docs/Web/API
ExtendableEventhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent
https://github.com/orgs/mdn/discussions/739
https://developer.mozilla.org/de/docs/Web/API/ExtendableEvent
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableEvent
https://developer.mozilla.org/fr/docs/Web/API/ExtendableEvent
https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent
https://developer.mozilla.org/zh-CN/docs/Web/API/ExtendableEvent
コミュニティーについてもっと知り、仲間になるにはこちらから。https://developer.mozilla.org/ja/docs/MDN/Community/Contributing/Translated_content#アクティブなロケール
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableEvent
完全な互換性情報を見る https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#ブラウザーの互換性
もっと詳しく https://developer.mozilla.org/ja/docs/Glossary/Baseline/Compatibility
installhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope/install_event
activatehttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope/activate_event
FetchEventhttps://developer.mozilla.org/ja/docs/Web/API/FetchEvent
waitUntil()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/waitUntil
存続期間延長プロミスhttps://w3c.github.io/ServiceWorker/#extendableevent-extend-lifetime-promises
Firefox バグ 1180274https://bugzil.la/1180274
Eventhttps://developer.mozilla.org/ja/docs/Web/API/Event
Event https://developer.mozilla.org/ja/docs/Web/API/Event
ExtendableEvent https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent
ServiceWorkerGlobalScopehttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope
Windowhttps://developer.mozilla.org/ja/docs/Web/API/Window
コンストラクターhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#コンストラクター
プロパティhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#プロパティ
メソッドhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#メソッド
例https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#例
仕様書https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#仕様書
ブラウザーの互換性https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#ブラウザーの互換性
関連情報https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#関連情報
コンストラクターhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#コンストラクター
ExtendableEvent()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/ExtendableEvent
プロパティhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#プロパティ
Eventhttps://developer.mozilla.org/ja/docs/Web/API/Event
メソッドhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#メソッド
Eventhttps://developer.mozilla.org/ja/docs/Web/API/Event
ExtendableEvent.waitUntil()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/waitUntil
installinghttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerRegistration/installing
installhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope/install_event
イベントハンドラーhttps://developer.mozilla.org/ja/docs/Web/API/Document_Object_Model/Events
activehttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerRegistration/active
activatehttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope/activate_event
イベントハンドラーhttps://developer.mozilla.org/ja/docs/Web/API/Document_Object_Model/Events
例https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#例
サービスワーカーのプリフェッチの例https://github.com/GoogleChrome/samples/blob/gh-pages/service-worker/prefetch/service-worker.js
プリフェッチの例をライブでhttps://googlechrome.github.io/samples/service-worker/prefetch/
ServiceWorkerGlobalScope.install_eventhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope/install_event
ExtendableEvent.waitUntil()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/waitUntil
ServiceWorkerRegistration.installinghttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerRegistration/installing
CORShttps://developer.mozilla.org/ja/docs/Glossary/CORS
www.chromium.orghttps://www.chromium.org/
仕様書https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#仕様書
Service Workers Nightly# extendableevent-interfacehttps://w3c.github.io/ServiceWorker/#extendableevent-interface
ブラウザーの互換性https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#ブラウザーの互換性
関連情報https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent#関連情報
サービスワーカーの使用https://developer.mozilla.org/ja/docs/Web/API/Service_Worker_API/Using_Service_Workers
サービスワーカーの基本的なコード例https://github.com/mdn/dom-examples/tree/main/service-worker/simple-service-worker
ServiceWorker の準備はできていますか？https://jakearchibald.github.io/isserviceworkerready/
Promisehttps://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Promise
ウェブワーカーの使用https://developer.mozilla.org/ja/docs/Web/API/Web_Workers_API/Using_web_workers
協力方法を知るhttps://developer.mozilla.org/ja/docs/MDN/Community/Getting_started
MDN の貢献者https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/contributors.txt
GitHub でこのページを表示https://github.com/mdn/translated-content/blob/main/files/ja/web/api/extendableevent/index.md?plain=1
このコンテンツに関する問題を報告https://github.com/mdn/translated-content/issues/new?template=page-report-ja.yml&mdn-url=https%3A%2F%2Fdeveloper.mozilla.org%2Fja%2Fdocs%2FWeb%2FAPI%2FExtendableEvent&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3Csummary%3EPage+report+details%3C%2Fsummary%3E%0A%0A*+Folder%3A+%60ja%2Fweb%2Fapi%2Fextendableevent%60%0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fja%2Fdocs%2FWeb%2FAPI%2FExtendableEvent%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Ftranslated-content%2Fblob%2Fmain%2Ffiles%2Fja%2Fweb%2Fapi%2Fextendableevent%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Ftranslated-content%2Fcommit%2Fd11d152dd9d87e879d61fc50dd2a9cc6d8299c10%0A*+Document+last+modified%3A+2025-07-31T14%3A18%3A15.000Z%0A%0A%3C%2Fdetails%3E
サービスワーカー APIhttps://developer.mozilla.org/ja/docs/Web/API/Service_Worker_API
ExtendableEventhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent
ExtendableEvent()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/ExtendableEvent
waitUntil()https://developer.mozilla.org/ja/docs/Web/API/ExtendableEvent/waitUntil
Eventhttps://developer.mozilla.org/ja/docs/Web/API/Event
Cachehttps://developer.mozilla.org/ja/docs/Web/API/Cache
CacheStoragehttps://developer.mozilla.org/ja/docs/Web/API/CacheStorage
Clienthttps://developer.mozilla.org/ja/docs/Web/API/Client
Clientshttps://developer.mozilla.org/ja/docs/Web/API/Clients
ExtendableMessageEventhttps://developer.mozilla.org/ja/docs/Web/API/ExtendableMessageEvent
FetchEventhttps://developer.mozilla.org/ja/docs/Web/API/FetchEvent
InstallEventhttps://developer.mozilla.org/ja/docs/Web/API/InstallEvent
NavigationPreloadManagerhttps://developer.mozilla.org/ja/docs/Web/API/NavigationPreloadManager
Navigator.serviceWorkerhttps://developer.mozilla.org/ja/docs/Web/API/Navigator/serviceWorker
ServiceWorkerhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorker
ServiceWorkerContainerhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerContainer
ServiceWorkerGlobalScopehttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerGlobalScope
ServiceWorkerRegistrationhttps://developer.mozilla.org/ja/docs/Web/API/ServiceWorkerRegistration
Window.cacheshttps://developer.mozilla.org/ja/docs/Web/API/Window/caches
WindowClienthttps://developer.mozilla.org/ja/docs/Web/API/WindowClient
WorkerGlobalScope.cacheshttps://developer.mozilla.org/ja/docs/Web/API/WorkerGlobalScope/caches
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