{"json_modified": "2016-03-28T08:43:57.073379", "uuid": "dd64dae4-c48d-46b6-9953-7d3351095608", "title": "InstallEvent", "url": "/en-US/docs/Web/API/FetchEvent_clone", "tags": ["API", "Interface", "Offline", "Reference", "Workers", "Experimental", "R\u00e9f\u00e9rence", "Exp\u00e9rimental", "Service Workers"], "translations": [], "modified": "2015-03-18T15:49:33", "label": "InstallEvent", "localization_tags": [], "locale": "en-US", "id": 145401, "last_edit": "2015-03-18T15:49:30", "summary": "The <code>InstallEvent</code> interface represents an install action that is dispatched on the <a href=\"/en-US/docs/Web/API/ServiceWorkerGlobalScope\" title=\"The ServiceWorkerGlobalScope interface of the ServiceWorker API represents the global execution context of a service worker.\"><code>ServiceWorkerGlobalScope</code></a> of a <a href=\"/en-US/docs/Web/API/ServiceWorker\" title=\"The ServiceWorker interface of the ServiceWorker API provides a reference to a service worker. Multiple browsing contexts (e.g. pages, workers, etc.) can be associated with the same service worker, each through a unique ServiceWorker object.\"><code>ServiceWorker</code></a>. As a child of <a href=\"/en-US/docs/Web/API/ExtendableEvent\" title=\"The ExtendableEvent interface extends the lifetime of the install and activate events dispatched on the global scope as part of the service worker lifecycle. This ensures that any functional events (like FetchEvent) are not dispatched until it upgrades database schemas and deletes the outdated cache entries.\"><code>ExtendableEvent</code></a> it ensures that functional events (like <a href=\"/en-US/docs/Web/API/FetchEvent\" title=\"The parameter passed into the ServiceWorkerGlobalScope.onfetch handler, FetchEvent represents a fetch action that is displatched on the ServiceWorkerGlobalScope of a ServiceWorker. It contains information about the request and resulting response, and provides the FetchEvent.respondWith() method, which allows us to provide an arbitrary response back to the controlled page.\"><code>FetchEvent</code></a>) are not dispatched during installation.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Properties", "title": "Properties"}, {"id": "Methods", "title": "Methods"}, {"id": "Examples", "title": "Examples"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/FetchEvent_clone", "review_tags": ["technical"]}