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||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|
1. From version 16: this feature is behind the
Enable service workers preference.
2. Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR).