Limited availability
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
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.
This feature may be blocked by a Permissions Policy set on your server.
EventTarget Sensor AmbientLightSensor ConstructorAmbientLightSensor() Experimental
Creates a new AmbientLightSensor object.
AmbientLightSensor.illuminance Read only Experimental
Returns the current light level in lux of the ambient light level around the hosting device.
AmbientLightSensor doesn't have own methods. However, it inherits methods from its parent interfaces, Sensor and EventTarget.
AmbientLightSensor doesn't have own events. However, it inherits events from its parent interface, Sensor.
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();
}
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