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

The parameter passed into the onnotificationclick handler, the NotificationEvent interface represents a notification click event that is dispatched on the ServiceWorkerGlobalScope of a ServiceWorker.

This interface inherits from the ExtendableEvent interface.


Creates a new NotificationEvent object.


Inherits properties from its ancestor, Event.

NotificationEvent.notification Read only
Returns a Notification object representing the notification that was clicked to fire the event.
NotificationEvent.action Read only
Returns the string ID of the notification button the user clicked. This value returns undefined if the user clicked the notification somewhere other than an action button, or the notification does not have a button.


Inherits methods from its parent, ExtendableEvent.


Extends the lifetime of the event.  It is intended to be called in the install EventHandler for the installing worker and on the active EventHandler for the active worker.


self.addEventListener('notificationclick', function(event) {
  console.log('On notification click: ', event.notification.tag);

  // This looks to see if the current is already open and
  // focuses if it is
    type: "window"
  }).then(function(clientList) {
    for (var i = 0; i < clientList.length; i++) {
      var client = clientList[i];
      if (client.url == '/' && 'focus' in client)
        return client.focus();
    if (clients.openWindow)
      return clients.openWindow('/');


Specification Status Comment
Notifications API
The definition of 'NotificationEvent' in that specification.
Living Standard Living standard.

Note: This interface is specified in the Notifications API, but accessed through ServiceWorkerGlobalScope.

Browser Compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support42 Yes441 ?37 ?
NotificationEvent() constructor42 Yes441 ?37 ?
notification42 Yes441 ?37 ?
action48 Yes441 ? No ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No42 ?4437 ?4.0
NotificationEvent() constructor No42 ?4437 ?4.0
notification No42 ?4437 ?4.0
action No48 ?44 No ?5.0

1. Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR).

Document Tags and Contributors

Contributors to this page: duduindo, fscholz, jpmedley, chrisdavidmills, rolfedh
Last updated by: duduindo,