ServiceWorkerContainer: controllerchange event

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The controllerchange event of the ServiceWorkerContainer interface fires when the document's associated ServiceWorkerRegistration acquires a new active worker.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener("controllerchange", (event) => {});

oncontrollerchange = (event) => {};

Event type

A generic Event.

Example

js
navigator.serviceWorker.addEventListener("controllerchange", () => {
  console.log("The controller of current browsing context has changed.");
});

Specifications

Specification
Service Workers
# dom-serviceworkercontainer-oncontrollerchange

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
controllerchange event

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support