Sensor: reading event

{{securecontext_header}}{{APIRef("Sensor API")}}

The reading event is fired when a new reading is available on a sensor.

The {{domxref('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 methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.

addEventListener("reading", (event) => { })

onreading = (event) => { }

Event type

A generic {{domxref("Event")}} with no added properties.

Examples

Reading acceleration

This example adds an event listener to read acceleration values of an {{domxref("Accelerometer")}}. It reads sixty times a second.

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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Sensor {{domxref('Sensor.activate_event', 'activate')}} event
• Sensor {{domxref('Sensor.error_event', 'error')}} event