AmbientLightSensor.illuminance
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
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. The Feature-Policy
HTTP header article contains implementation instructions.
Value
A Number
indicating the current light level in lux.
Examples
if ( 'AmbientLightSensor' in window ) {
const sensor = new AmbientLightSensor();
sensor.addEventListener('reading', event => {
console.log('Current light level:', sensor.illuminance);
});
sensor.addEventListener('error', event => {
console.log(event.error.name, event.error.message);
});
sensor.start();
}
Specifications
Specification |
---|
Ambient Light Sensor # ambient-light-sensor-reading-attribute |
Browser compatibility
BCD tables only load in the browser