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

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

The read-only type property of the WakeLockSentinel interface returns a string representation of the currently acquired WakeLockSentinel type.


A string representation of the currently acquired wake lock type. The type 'screen'` is a screen wake lock. It prevents devices from dimming or locking the screen.


This example shows an asynchronous function that acquires a WakeLockSentinel, then logs the type to the console.

const requestWakeLock = async () => {
  wakeLock = await navigator.wakeLock.request('screen');
  console.log(wakeLock.type); // logs 'screen'



Screen Wake Lock API
# the-type-attribute

Browser compatibility

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