Baseline Widely available
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 updatefound event of the ServiceWorkerRegistration interface is fired any time the ServiceWorkerRegistration.installing property acquires a new service worker.
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("updatefound", (event) => { })
onupdatefound = (event) => { }
A generic Event.
const registration = await navigator.serviceWorker.getRegistration();
if (registration) {
registration.addEventListener("updatefound", () => {
console.log("Service Worker update found!");
});
}
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