The updatefound event of the ServiceWorkerRegistration interface is fired any time the ServiceWorkerRegistration.installing property acquires a new service worker.
ServiceWorkerRegistration: updatefound event
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener('updatefound', event => { }); onupdatefound = event => { };
Event type
A generic Event.
Examples
const registration = await navigator.serviceWorker.getRegistration(); if (registration) { registration.addEventListener('updatefound', () => { console.log('Service Worker update found!'); }); }
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 | |
updatefound_event |
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
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/updatefound_event
