This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The active property of the ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is activating or activated. This property is initially set to null.
An active worker controls a ServiceWorkerClient if the client's URL falls within the scope of the registration (the scope option set when ServiceWorkerContainer.register is first called.)
Note: This feature is available in Web Workers.
sw = ServiceWorker.active
A ServiceWorker object, if it is currently in an activating or activated state.
| Specification | Status | Comment |
|---|---|---|
| Service Workers The definition of 'ServiceWorkerRegistration.active' in that specification. | Editor's Draft | Initial definition. |
| 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.
Promise
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/active