WakeLockSentinel.released

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The read-only released property of the WakeLockSentinel interface returns a boolean that indicates whether a WakeLockSentinel has been released yet.

Syntax

const released = sentinel.released

Value

A boolean value, that is false until the WakeLockSentinel has been released (either through a call to WakeLockSentinel.release() or because the lock has been released automatically) and the release event has been emitted, after which it becomes true and no longer changes.

Examples

This example shows how released's value changes within a 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

Specification
Screen Wake Lock API
# dom-wakelocksentinel-released

Browser compatibility

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