Sensor: reading event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The reading event is fired when a new reading is available on a sensor.
The Sensor interface is a base class, onreading and the reading event may only be used
on one of the derived classes.
Syntax
Use the event name in addEventListener():
js
addEventListener("reading", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
onreading = (event) => { }
Event type
A generic Event with no added properties.
Examples
>Reading acceleration
This example adds an event listener to read acceleration values of an Accelerometer. It reads sixty times a second.
js
const acl = new Accelerometer({ frequency: 60 });
acl.addEventListener("reading", () => {
console.log(`Acceleration along the X-axis ${acl.x}`);
console.log(`Acceleration along the Y-axis ${acl.y}`);
console.log(`Acceleration along the Z-axis ${acl.z}`);
});
acl.start();
Specifications
| Specification |
|---|
| Generic Sensor API> # sensor-onreading> |