The navigationPreload read-only property of the ServiceWorkerRegistration interface returns the NavigationPreloadManager associated with the current service worker registration.
The returned object allows resources managed by a service worker to be preemptively downloaded in parallel with service worker boot up.
An instance of NavigationPreloadManager.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
navigationPreload |
59 | 17 | 99 | No | 46 | 15.4 | 59 | 59 | 99 | 43 | 15.4 | 4.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/navigationPreload