ServiceWorkerRegistration.onupdatefound

The onupdatefound property of the ServiceWorkerRegistration interface is an EventListener property called whenever an event of type statechange is fired; it is fired any time the ServiceWorkerRegistration.installing property acquires a new service worker.

Note: This feature is available in Web Workers.

Syntax

serviceWorkerRegistration.onupdatefound = function() { ... };

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
onupdatefound
40
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
27
11.1
40
40
44
27
11.3
4.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/onupdatefound