NavigationPreloadManager.enable()
The enable()
method of the NavigationPreloadManager
interface is used to enable preloading of resources managed by the service worker.
It returns a promise that resolves with undefined
.
The method should be called in the service worker's activate
event handler, which ensures it is called before any fetch
event handler can fire.
Syntax
enable()
Return Value
Exceptions
InvalidStateError
DOMException
-
There is no active worker associated with the registration to which this
NavigationPreloadManager
belongs.
Examples
The code below shows how to enable preloading, after first using ServiceWorkerRegistration.navigationPreload
to test that it is supported.
addEventListener('activate', event => {
event.waitUntil(async function() {
if (self.registration.navigationPreload) {
// Enable navigation preloads!
await self.registration.navigationPreload.enable();
}
}());
});
Specifications
No specification found
No specification data found for api.NavigationPreloadManager.enable
.
Check for problems with this page or contribute a missing spec_url
to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.
Browser compatibility
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