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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchManager/get below:

BackgroundFetchManager: get() method - Web APIs

BackgroundFetchManager: get() method

Limited availability

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 get() method of the BackgroundFetchManager interface returns a Promise that resolves with the BackgroundFetchRegistration associated with the provided id or undefined if the id is not found.

Syntax Parameters Return value

A Promise that resolves with a BackgroundFetchRegistration or undefined.

Examples

The following examples shows how to use get() to retrieve a BackgroundFetchRegistration. With an active service worker, use the ServiceWorkerRegistration.backgroundFetch to access the BackgroundFetchManager object and call its get() method.

navigator.serviceWorker.ready.then(async (swReg) => {
  const bgFetch = await swReg.backgroundFetch.get("my-fetch");
});
// my code block
Specifications Browser compatibility

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