The illuminance
property of the AmbientLightSensor
interface returns the current light level in lux of the ambient light level around the hosting device.
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 insfructions.
var level = AmbientLightSensor.illuminance
A Number
indicating the current light level in lux.
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(); }
Specification | Status | Comment |
---|---|---|
Generic Sensor API | Candidate Recommendation | Defines sensors in general. |
Ambient Light Sensor The definition of 'illuminance' in that specification. | Candidate Recommendation |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 54
|
? | ? | ? | 56 | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 54
|
54
|
? | ? | 56 | ? | ? |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/AmbientLightSensor/illuminance