This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The parameter passed into the sync handler, the PeriodicSyncEvent interface represents a periodic sync action that is dispatched on the ServiceWorkerGlobalScope of a ServiceWorker. 

This interface inherits from the ExtendableEvent interface.


Creates a new PeriodicSyncEvent object.


Inherits properties from its ancestor, Event.

The instance of PeriodicSyncRegistration that fired the event.


Inherits methods from its parent, ExtendableEvent


// TBD

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support ? ? ? ?
Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support ? ? ? ? ? No support

Document Tags and Contributors

 Contributors to this page: jpmedley, rolfedh
 Last updated by: jpmedley,