This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
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 waiting read-only property of the ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is installed. This property is initially set to null.
A ServiceWorker object, if it is currently in an installed state.
| Specification |
|---|
| Service Workers> # navigator-service-worker-waiting> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
waiting |
40 | 17 | 44 | 27 | 11.1 | 40 | 44 | 27 | 11.3 | 4.0 | 40 | No |
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/waiting