BackgroundFetchManager
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The BackgroundFetchManager
interface of the Background Fetch API is a map where the keys are background fetch IDs and the values are BackgroundFetchRegistration
objects.
Instance properties
None.
Instance methods
fetch()
Experimental-
Returns a
Promise
that resolves with aBackgroundFetchRegistration
object for a supplied array of URLs andRequest
objects. get()
Experimental-
Returns a
Promise
that resolves with theBackgroundFetchRegistration
associated with the providedid
orundefined
if theid
is not found. getIds()
Experimental-
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 an audio file in the background.
js
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
BCD tables only load in the browser