| title | slug | page-type | status | browser-compat | |
|---|---|---|---|---|---|
WakeLockSentinel.released |
Web/API/WakeLockSentinel/released |
web-api-instance-property |
|
api.WakeLockSentinel.released |
{{APIRef("Screen Wake Lock API")}}{{SeeCompatTable}}
The read-only released property of the
{{domxref("WakeLockSentinel")}} interface returns a boolean that indicates whether
a {{domxref("WakeLockSentinel")}} has been released yet.
const released = sentinel.released
A boolean value, that is false until the
{{domxref("WakeLockSentinel")}} has been released (either through a call to
{{domxref("WakeLockSentinel.release()")}} or because the lock has been released
automatically) and the {{domxref("WakeLockSentinel/release_event", "release")}} event has been
emitted, after which it becomes true and no longer changes.
This example shows how released's value changes within a
{{domxref("WakeLockSentinel")}}'s life cycle.
const sentinel = await navigator.wakeLock.request('screen');
console.log(sentinel.released); // Logs "false"
sentinel.onrelease = () => {
console.log(sentinel.released); // Logs "true"
};
await sentinel.release();{{Specifications}}
{{Compat}}