InstallEvent.activeWorker

The activeWorker read-only property of the InstallEvent interface returns the ServiceWorker that is currently actively controlling the page.

This will return null if no active worker is already controlling the page.

Syntax

var myActiveWorker = event.activeWorker

Value

A ServiceWorker object.

Examples

self.addEventListener('install', function(event) {
  var myActiveWorker = event.activeWorker;
});

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• Promise
• Fetch API