The Navigator.serviceWorker read-only property returns the ServiceWorkerContainer object for the associated document, which provides access to registration, removal, upgrade, and communication with the ServiceWorker.

Syntax

var workerContainerInstance = navigator.serviceWorker;

Value

ServiceWorkerContainer     

Examples

This code checks if the browser supports service workers.

if ('serviceWorker' in navigator) {
  // Supported!
}

Specifications

Specification Status Comment
Service Workers
The definition of 'navigator.serviceWorker' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 40 44.0 (44.0)[1] No support 27 No support
Feature Android Webviw Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 40 40 44.0 (44.0) (Yes) No support 27 No support

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

See also

Document Tags and Contributors

 Contributors to this page: jpmedley, rowan_m, chrisdavidmills, Ehsan, Sebastianz, teoli, kscarfone
 Last updated by: jpmedley,