This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The waiting property of the ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is installed. This property is initially set to null.
Note: This feature is available in Web Workers.
Syntax
sw = ServiceWorker.waiting
Value
A ServiceWorker object, if it is currently in an installed state.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Service Workers The definition of 'ServiceWorkerRegistration.waiting' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 40.0 | (Yes)[2] | 44.0 (44.0)[1] | No support | ? | No support |
| Available in web workers | (Yes) | ? | 44.0 (44.0)[1] | No support | ? | No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | ? | 44.0 (44.0) | (Yes) | No support | ? | No support | ? |
| Available in web workers | ? | (Yes) | ? | No support | ? | No support | ? |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
[2] Service workers is available in Microsoft Edge starting EdgeHTML 16 behind a flag.