FetchEvent.FetchEvent()

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The FetchEvent() constructor creates a new FetchEvent object.

Syntax

var myFetchEvent = new FetchEvent(type, init);

type

The type of the Event.

init Optional

An options object containing any custom settings that you want to apply to the event object. Options are as follows:

request: The Request object that would have triggered the event handler.
clientId: The Client that the current service worker is controlling. This property is not yet implemented in Chrome.
isReload: A Boolean that signifies whether the page was reloaded or not when the event was dispatched. true if yes, and false if not. Typically, pressing the refresh button in a browser is a reload, while clicking a link and pressing the back button is not. If not present, it defaults to false.

Specification	Status	Comment
Service Workers The definition of 'FetchEvent' in that specification.	Working Draft	Initial definition.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`FetchEvent()` constructor Experimental	Chrome Full support 40	Edge Full support Yes	Firefox Full support 44 Notes Full support 44 Notes Notes Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)	IE No support No	Opera Full support 27	Safari No support No	WebView Android Full support 40	Chrome Android Full support 40	Edge Mobile ?	Firefox Android Full support 44	Opera Android Full support 27	Safari iOS No support No	Samsung Internet Android Full support 4.0

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
See implementation notes.: See implementation notes.