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.

API onupdatefound Property Reference Référence Service Workers ServiceWorkerRegistration

The periodicSync read-only property of the ServiceWorkerRegistration interface returns a reference to the PeriodicSyncManager interface, which manages periodic background synchronization processes.

API Experimental periodicSync PeriodicSyncManager Property Reference Service Workers ServiceWorkerRegistration

The pushManager property of the ServiceWorkerRegistration interface returns a reference to the PushManager interface for managing push subscriptions; this includes support for subscribing, getting an active subscription, and accessing push permission status.

API Property Push PushManager Reference Service Workers ServiceWorkerRegistration

API Experimental Method NeedsExample Reference Service Workers ServiceWorker ServiceWorkerRegistration showNotification

The sync property of the ServiceWorkerRegistration interface returns a reference to the SyncManager interface, which manages background synchronization processes.

API Experimental Property Reference Service Workers ServiceWorkerRegistration Sync sync

The update method of the ServiceWorkerRegistration interface attempts to update the service worker. It fetches the worker's script URL, and if the new worker is not byte-by-byte identical to the current worker, it installs the new worker. The fetch of the worker bypasses any browser caches if the previous fetch occurred over 24 hours ago.

API Method Reference Service Workers ServiceWorkerRegistration Update update

The waiting property of the ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is installed. This property is initially set to null.

API Property Reference Référence Service Workers ServiceWorkerRegistration waiting

Web Workers are a mechanism by which a script operation can be made to run in a background thread separate from the main execution thread of a web application. The advantage of this is that laborious processing can be performed in a separate thread, allowing the main (usually the UI) thread to run without being blocked/slowed down.

API Service Workers Shared Workers Web Workers Workers

API Client Experimental Interface Reference Service Workers ServiceWorker WindowClient

API Client Experimental Focus Method Reference Service Workers WindowClient

API Client Experimental Method Navigate Reference Service Workers WindowClient

API Bluetooth BluetoothRemoteGATTCharacteristic Non-standard Property Reference Service Web Bluetooth API

API Bluetooth BluetoothRemoteGATTCharacteristic Non-standard Property Reference Service uuid Web Bluetooth API

API Cache Draft Experimental Interface Offline offline Reference Service Workers storage Storage

API Cache delete Experimental Expérimental Method NeedsContent NeedsExample Reference Référence Service Workers ServiceWorker

API Cache Experimental Expérimental Method NeedsExample put Reference Référence Service Workers ServiceWorker

API CacheStorage delete Experimental Expérimental Method Reference Référence Service Workers ServiceWorker

API CacheStorage Experimental Expérimental has Method Reference Référence Service Workers ServiceWorker

API CacheStorage Experimental Expérimental keys Method Reference Référence Service Workers ServiceWorker

API CacheStorage Experimental Expérimental Method open Reference Référence Service Workers ServiceWorker