Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The index read-only property of the ServiceWorkerRegistration interface returns a reference to the ContentIndex interface, which allows for indexing of offline content.
A ContentIndex object.
You can access the property from either your main script or the registered service worker.
Here is an example from the main script:
js
// reference registration const registration = await navigator.serviceWorker.ready; // feature detection if ("index" in registration) { // Content Index API functionality const contentIndex = registration.index; }
From the service worker:
js
// service worker script const contentIndex = self.registration.index;
| Specification |
|---|
| Content Index # dom-serviceworkerregistration-index |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
index |
No | No | No | No | No | No | 84 | 84 | No | 60 | No | 14.0 |
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/index