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ServiceWorkerRegistration: active property

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 Client 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.

Note: Once an active worker is activating, neither a runtime script error nor a force termination of the active worker prevents the active worker from getting activated.

Value

A ServiceWorker object's property, if it is currently in an activating or activated state.

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
active 40 17 44 No 27 11.1 40 40 44 27 11.3 4.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/active