The x read-only property of the Magnetometer interface returns a double precision integer containing the magnetic field around the device's x axis.

If a feature policy blocks use of a feature it is because your code is inconsistent with the policies set on your server. This is not something that would ever be shown to a user. See Feature-Policy for implementation instructions.


var magnetometerx = magnetometer.x


A Number.


The magnetometer is typically read in the Sensor.onreading event callback. In the example below this occurs sixty times a second.

let magSensor = new Magnetometer({frequency: 60});

magSensor.addEventListener('reading', e => {
  console.log("Magnetic field along the X-axis " + magSensor.x);
  console.log("Magnetic field along the Y-axis " + magSensor.y);
  console.log("Magnetic field along the Z-axis " + magSensor.z);


Specification Status Comment
Generic Sensor API Candidate Recommendation Defines sensors in general.
The definition of 'x' in that specification.
Candidate Recommendation

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