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

The addAll() method of the Cache interface takes an array of URLs, retrieves them, and adds the resulting response objects to the given cache. The request objects created during retrieval become keys to the stored response operations. 

NoteaddAll() will overwrite any key/value pairs previously stored in the cache that match the request, but will fail if a resulting put() operation would overwrite a previous cache entry created by the same addAll() method.

Syntax

cache.addAll(requests[]).then(function() {
  // requests have been added to the cache
});

Parameters

requests
An array of string URLs that you want to be fetched and added to the cache.

Return value

A Promise that resolves with void.

Exceptions

Exception Happens when
TypeError

The URL scheme is not http or https.

The Response status is not in the 200 range (i.e., not a successful response.) This occurs if the request does not return successfully, but also if the request is a cross-origin no-cors request (in which case the reported status is always 0.)

Examples

This code block waits for an InstallEvent to fire, then runs waitUntil() to handle the install process for the app. This consists of calling CacheStorage.open to create a new cache, then using addAll() to add a series of assets to it.

this.addEventListener('install', function(event) {
  event.waitUntil(
    caches.open('v1').then(function(cache) {
      return cache.addAll([
        '/sw-test/',
        '/sw-test/index.html',
        '/sw-test/style.css',
        '/sw-test/app.js',
        '/sw-test/image-list.js',
        '/sw-test/star-wars-logo.jpg',
        '/sw-test/gallery/',
        '/sw-test/gallery/bountyHunters.jpg',
        '/sw-test/gallery/myLittleVader.jpg',
        '/sw-test/gallery/snowTroopers.jpg'
      ]);
    })
  );
});

Specifications

Specification Status Comment
Service Workers
The definition of 'Cache: addAll' in that specification.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Experimental
Chrome Full support 46
Notes
Full support 46
Notes
Notes Requires HTTPS.
Edge Full support 16Firefox Full support 39
Notes
Full support 39
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 33
Notes
Full support 33
Notes
Notes Requires HTTPS.
Safari No support NoWebView Android Full support 46
Notes
Full support 46
Notes
Notes Requires HTTPS.
Chrome Android Full support 46
Notes
Full support 46
Notes
Notes Requires HTTPS.
Edge Mobile No support NoFirefox Android Full support 39Opera Android Full support 33
Notes
Full support 33
Notes
Notes Requires HTTPS.
Safari iOS No support NoSamsung Internet Android Full support 5.0

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
See implementation notes.
See implementation notes.

See also