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 illuminance
read-only property of the AmbientLightSensor
interface returns the current light level in lux of the ambient light level around the hosting device.
A Number
indicating the current light level in lux.
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 Browser compatibility
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4