PeriodicSyncManager.register()

The register() method of the PeriodicSyncManager interface registers a periodic sync request with the browser with the specified tag and options. It returns a Promise that resolves when the registration completes.

Syntax

var register = PeriodicSyncManager.register(tag, BackgroundSyncOptions);

Parameters

tag

A unique String identifier

BackgroundSyncOptions Optional

An Object containing the following optional data:

  • minInterval: The minimum interval time, in milliseconds, at which the periodic sync should occur.

Return value

Returns a Promise that resolves with undefined

Exceptions

InvalidStateError DOMException

Returned if there is no active ServiceWorker present.

NotAllowedError DOMException

Returned if permission for background periodic sync is not granted.

InvalidAccessError DOMException

Returned if the active window is not the main window (not of auxiliary or top-level type).

Examples

The following asynchronous function registers a periodic background sync at a minimum interval of one day from a browsing context:

async function registerPeriodicNewsCheck() {
  const registration = await navigator.serviceWorker.ready;
  try {
    await registration.periodicSync.register('fetch-news', {
      minInterval: 24 * 60 * 60 * 1000,
    });
  } catch {
    console.log('Periodic Sync could not be registered!');
  }
}

Specifications

Specification
Web Periodic Background Synchronization
# dom-periodicsyncmanager-register

Browser compatibility

BCD tables only load in the browser

See also