ServiceWorkerRegistration: active property

Secure context Available in workers

The active read-only property of the ServiceWorkerRegistration interface returns a service worker whose 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 register is first called.)

[!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

See also

• Using Service Workers
• Service workers basic code example
• Using web workers