ServiceWorkerRegistration.onupdatefound - Web APIs 编辑

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

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See also

• Using Service Workers
• Service workers basic code example
• Is ServiceWorker ready?
• Promise
• Using web workers