AmbientLightSensor
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The AmbientLightSensor
interface of 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. The Feature-Policy
HTTP header article contains implementation instructions.
Constructor
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.
Methods
AmbientLightSensor
doesn't have own methods. However, it inherits methods from its parent interfaces, Sensor
and EventTarget
.
Events
AmbientLightSensor
doesn't have own events. However, it inherits events from its parent interface, Sensor
.
Example
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-interface |
Browser compatibility
BCD tables only load in the browser