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.
serviceWorkerRegistration.onupdatefound = function() { ... };
| 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 |
Promise
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/onupdatefound