The AmbientLightSensor
interface of the the Sensor APIs returns the current light level or illuminance of the ambient light around the hosting device.
To use this sensor, the user must grant permission to the 'ambient-light-sensor'
device sensor through the Permissions
API.
If a feature policy blocks use of a feature it is because your code is inconsistent with the policies set on your server. This is not something that would ever be shown to a user. See Feature-Policy
for implementation instructions.
Constructor
AmbientLightSensor.AmbientLightSensor()
- Creates a new
AmbientLightSensor
object.
Properties
AmbientLightSensor.illuminance
- Returns the current light level in lux of the ambient light level around the hosting device.
Example
if ( 'AmbientLightSensor' in window ) { const sensor = new AmbientLightSensor(); sensor.onreading = () => { console.log('Current light level:', sensor.illuminance); }; sensor.onerror = (event) => { console.log(event.error.name, event.error.message); }; sensor.start(); }
Specifications
Specification | Status | Comment |
---|---|---|
Generic Sensor API | Candidate Recommendation | Defines sensors in general. |
Ambient Light Sensor The definition of 'AmbientLightSensor' in that specification. |
Candidate Recommendation |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
AmbientLightSensor | Chrome
Full support
54
| Edge Full support ≤79 | Firefox No support No | IE No support No | Opera Full support 56 | Safari No support No | WebView Android
Full support
54
| Chrome Android
Full support
54
| Firefox Android No support No | Opera Android Full support 48 | Safari iOS No support No | Samsung Internet Android
Full support
6.0
|
AmbientLightSensor() constructor | Chrome
Full support
54
| Edge Full support ≤79 | Firefox No support No | IE No support No | Opera Full support 56 | Safari No support No | WebView Android
Full support
54
| Chrome Android
Full support
54
| Firefox Android No support No | Opera Android Full support 48 | Safari iOS No support No | Samsung Internet Android
Full support
6.0
|
illuminance | Chrome
Full support
54
| Edge Full support ≤79 | Firefox No support No | IE No support No | Opera Full support 56 | Safari No support No | WebView Android
Full support
54
| Chrome Android
Full support
54
| Firefox Android No support No | Opera Android Full support 48 | Safari iOS No support No | Samsung Internet Android
Full support
6.0
|
Legend
- Full support
- Full support
- No support
- No support
- See implementation notes.
- See implementation notes.