BackgroundFetchEvent

The BackgroundFetchEvent interface of the Background Fetch API is the event type for background fetch events dispatched on the service worker global scope.

It is the event type passed to onbackgroundfetchabort and onbackgroundfetchclick.

Constructor

BackgroundFetchEvent()

Creates a new BackgroundFetchEvent object. This constructor is not typically used, as the browser creates these objects itself and provides them to background fetch event callbacks.

Properties

Inherits properties from its ancestor, Event.

BackgroundFetchEvent.registrationRead only

Returns the BackgroundFetchRegistration that the event was initialized to.

Event handlers

None.

Methods

None.

Examples

In this example, if the user clicks on the user interface displaying the download progress, a new window will open. The current BackgroundFetchRegistration is returned by calling event.registration.

addEventListener('backgroundfetchclick', (event) => {
  const bgFetch = event.registration;

  if (bgFetch.result === 'success') {
    clients.openWindow('/latest-podcasts');
  } else {
    clients.openWindow('/download-progress');
  }
});

Specifications

Browser compatibility