ServiceWorkerRegistration: index property
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The index
read-only property of the
ServiceWorkerRegistration
interface returns a reference to the
ContentIndex
interface, which allows for indexing of offline content.
Value
A ContentIndex
object.
Examples
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;
Specifications
Specification |
---|
Content Index # dom-serviceworkerregistration-index |
Browser compatibility
BCD tables only load in the browser