This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
active property of the
ServiceWorkerRegistration interface returns a service worker whose
activated. This property is initially set to
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
ServiceWorker object, if it is currently in an
The definition of 'ServiceWorkerRegistration.active' in that specification.
|Working Draft||Initial definition.
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari (WebKit)|
|Basic support||40.0||44.0 (44.0)||No support||?||No support|
|Available in web workers||(Yes)||44.0 (44.0)||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||?|
 Service workers (and Push) have been disabled in the Firefox 45 Extended Support Release (ESR.)
- Using Service Workers
- Service workers basic code example
- Is ServiceWorker ready?
- Using web workers
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