periodicsync - Event reference 编辑

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The periodicsync event of the ServiceWorkerGlobalScope interface is fired at timed intervals, specified when registering a PeriodicSyncManager.

Bubbles	No
Cancelable	No
Interface	`PeriodicSyncEvent`
Event handler property	`ServiceWorkerGlobalScope.onperiodicsync`

Examples

The following example shows how to respond to a periodic sync event in the service worker.

self.addEventListener('periodicsync', event => {
  if (event.tag == 'get-latest-news') {
    event.waitUntil(fetchAndCacheLatestNews());
  }
});

You can also set up the event handler using the ServiceWorkerGlobalScope.onperiodicsync property:

self.onperiodicsync = (event) => {
  ...
};

Specification	Status	Comment
Web Periodic Background Synchronization The definition of 'periodicsync' in that specification.	Working Draft	Initial definition.