ServiceWorkerGlobalScope: periodicsync event

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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


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') {

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

self.onperiodicsync = (event) => {


Web Periodic Background Synchronization
# periodicsync-event

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See also