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

The PushEvent() constructor creates a new PushEvent object. Note that the this constructor is exposed only to a service worker context.


var myPushEvent = new PushEvent(type, eventInitDict);


A DOMString defining the type of PushEvent. This can be push or pushsubscriptionchange.
eventInitDict Optional
An options object containing any initialization data you want to populate the PushEvent object with. The options are:
  • data: The data you want the PushEvent to contain, if any. When the constructor is invoked, the PushEvent.data property of the resulting object will be set to a new PushMessageData object containing bytes extracted from the eventInitDict data member.


var dataInit = {
  data : 'Some sample text'

var myPushEvent = new PushEvent('push', dataInit);

myPushEvent.data.text(); // should return 'Some sample text'

Browser Compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
PushEvent() constructor
Chrome Full support 42Edge Full support 16
Full support 16
Disabled From version 16: this feature is behind the Enable service workers preference.
Full support 17
Firefox Full support 44
Full support 44
Notes Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
Notes Enabled only in Nightly, Developer Edition, and Beta channels.
IE No support NoOpera Full support 37Safari No support NoWebView Android No support NoChrome Android Full support 42Firefox Android Full support 44
Full support 44
Full support 48
Notes Push enabled by default.
Opera Android Full support 37Safari iOS No support NoSamsung Internet Android Full support 4.0


Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also

Document Tags and Contributors

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