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PeriodicSyncManager - Web APIs | MDN

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Note: This feature is available in Web Workers.

The PeriodicSyncManager interface of the Web Periodic Background Synchronization API provides a way to register tasks to be run in a service worker at periodic intervals with network connectivity. These tasks are referred to as periodic background sync requests. Access PeriodicSyncManager through the ServiceWorkerRegistration.periodicSync.

None.

PeriodicSyncManager.register() Experimental

Registers a periodic sync request with the browser with the specified tag and options. Returns a Promise that resolves when the registration completes.

PeriodicSyncManager.getTags() Experimental

Returns a Promise that resolves with a list of strings representing the tags that are currently registered for periodic syncing.

PeriodicSyncManager.unregister() Experimental

Unregisters the periodic sync request corresponding to the specified tag and returns a Promise that resolves when unregistration completes.

The following examples show how to use the interface.

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("get-latest-news", {
      minInterval: 24 * 60 * 60 * 1000,
    });
  } catch {
    console.log("Periodic Sync could not be registered!");
  }
}

This code checks to see if a Periodic Background Sync task with a given tag is registered.

navigator.serviceWorker.ready.then((registration) => {
  registration.periodicSync.getTags().then((tags) => {
    if (tags.includes("get-latest-news")) skipDownloadingLatestNewsOnPageLoad();
  });
});

The following code removes a Periodic Background Sync task to stop articles syncing in the background.

navigator.serviceWorker.ready.then((registration) => {
  registration.periodicSync.unregister("get-latest-news");
});

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