WakeLockSentinel: release event
Baseline
2025
Newly available
Since March 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The release event of the WakeLockSentinel interface 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.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("release", (event) => { })
onrelease = (event) => { }
Event type
A generic Event.
Examples
This example updates the UI if the wake lock is released.
wakeLock.addEventListener("release", () => {
// if wake lock is released alter the UI accordingly
statusElement.textContent = "Wake Lock has been released";
});
Specifications
| Specification |
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| Screen Wake Lock API # the-onrelease-attribute |
Browser compatibility
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release event
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Legend
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- Full support
- Full support
- Partial support
- Partial support
- Has more compatibility info.