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);
Parameters
- 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
: TheRequest
object that would have triggered the event handler.clientId
: TheClient
that the current service worker is controlling. This property is not yet implemented in Chrome.isReload
: ABoolean
that signifies whether the page was reloaded or not when the event was dispatched.true
if yes, andfalse
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 tofalse
.
Specifications
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'FetchEvent' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 49.0 | 44.0 (44.0)[1] | No support | 24 | No support |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | No support | 49.0 | 44.0 (44.0) | (Yes) | No support | ? | No support | 49.0 |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)