Web/API/WakeLockSentinel/onrelease

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Secure contextThis feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The onrelease property of the WakeLockSentinel is fired when the sentinel object's handle has been released.

A WakeLockSentinel can be released manually via the release() method, or automatically via the platform wake lock. This can happen if the document becomes inactive or looses visibility, if the device is low on power or the user turns on a power save mode.

This interface inherits from the Event interface.

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Syntax

wakeLockSentinel.onrelease = function(event) {...}

Examples

This example updates the UI should the wake lock be released.

wakeLock.addEventListener('release', () => {

  // if wake lock is released alter the UI accordingly

  statusElement.textContent = 'Wake Lock has been released';
});

Specifications

Specification	Status	Comment
Screen Wake Lock APIThe definition of 'onrelease' in that specification.	Editor's Draft	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`onrelease` Experimental'	Chrome Full support 84	Edge Full support 84	Firefox No support No	IE No support No	Opera Full support Yes	Safari No support No	WebView Android Full support 84	Chrome Android Full support 84	Firefox Android No support No	Opera Android Full support Yes	Safari iOS No support No	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.

WakeLockSentinel.onrelease by Mozilla Contributors is licensed under CC-BY-SA 2.5.