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.
Note: addAll()
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 stored 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. You can specify the
Request
object instead of the URL.
Return value
A Promise
that resolves with undefined
.
Exceptions
Exception | Happens when |
---|---|
TypeError |
The URL scheme is not 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
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
addAll | Chrome
Full support
46
| Edge Full support 16 | Firefox
Full support
39
| IE No support No | Opera
Full support
33
| Safari Full support 11 | WebView Android
Full support
46
| Chrome Android
Full support
46
| Firefox Android Full support 39 | Opera Android
Full support
33
| Safari iOS Full support 11 | Samsung 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.