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

The AmbientLightSensor interface of the the Ambient Light Sensor API returns an interface for accessing AmbientLightSensorReading.


Creates a new AmbientLightSensor object.


Returns an AmbientLightSensorReading interface, containing the current light level.


if ( 'AmbientLightSensor' in window ) {
  var sensor = new AmbientLightSensor();
  sensor.onreading = function() {
    console.log('Current light level:', sensor.illuminance);
  sensor.onerror = function(event) {
    console.log(event.error.name, event.error.message);
Specification Status Comment
Ambient Light Sensor
The definition of 'AmbientLightSensor' in that specification.
Working Draft Initial definition.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 54.0 ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 54.0 ? ? ? ? ? 54.0

Document Tags and Contributors

 Contributors to this page: RockoDev, bunnybooboo, Joel-Kornbluh, jpmedley
 Last updated by: RockoDev,