This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

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'



Specification Status Comment
Push API
The definition of 'PushEvent' in that specification.
Working Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 42.0 44.0 (44.0)[1][2] No support ? No support
data property No support 44.0 (44.0)[2] No support No support No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support 48.0 (48)[3] No support No support No support No support 42.0
data property No support No support 48.0 (48)[3] No support No support No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills
 Last updated by: chrisdavidmills,