AmbientLightSensor: illuminance property
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 illuminance
read-only property of the AmbientLightSensor
interface returns the current light level in lux of the ambient light level around the hosting device.
Value
A Number
indicating the current light level in lux.
Examples
js
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