BackgroundFetchManager
The BackgroundFetchManager
interface of the Background Fetch API is a map where the keys are background fetch IDs and the values are BackgroundFetchRegistration
objects.
Properties
None.
Methods
fetch()
-
Returns a
Promise
that resolves with aBackgroundFetchRegistration
object for a supplied array of URLs andRequest
objects. get()
-
Returns a
Promise
that resolves with theBackgroundFetchRegistration
associated with the providedid
orundefined
if theid
is not found. getIDs()
-
Returns the IDs of all registered background fetches.
Examples
The example below shows how to get an instance of BackgroundFetchManager
from a ServiceWorkerRegistration
object and calls fetch()
to download a video in the background.
navigator.serviceWorker.ready.then(async (swReg) => {
const bgFetch = await swReg.backgroundFetch.fetch('my-fetch', ['/ep-5.mp3', 'ep-5-artwork.jpg'], {
title: 'Episode 5: Interesting things.',
icons: [{
sizes: '300x300',
src: '/ep-5-icon.png',
type: 'image/png',
}],
downloadTotal: 60 * 1024 * 1024,
});
});
Specifications
Specification |
---|
Background Fetch # background-fetch-manager |
Browser compatibility
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