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DeviceMotionEvent

The DeviceMotionEvent interface provides web developers with information about the speed of changes for the device's position and orientation.

Warning: Currently, Firefox and Chrome do not handle the coordinates the same way. Take care about this while using them.

DeviceMotionEvent.acceleration Read only: An object giving the acceleration of the device on the three axis X, Y and Z. Acceleration is expressed in m/s².
DeviceMotionEvent.accelerationIncludingGravity Read only: An object giving the acceleration of the device on the three axis X, Y and Z with the effect of gravity. Acceleration is expressed in m/s².
DeviceMotionEvent.rotationRate Read only: An object giving the rate of change of the device's orientation on the three orientation axis alpha, beta and gamma. Rotation rate is expressed in degrees per seconds.
DeviceMotionEvent.interval Read only: A number representing the interval of time, in milliseconds, at which data is obtained from the device.

window.addEventListener("devicemotion", (event) => {
  console.log(`${event.acceleration.x} m/s2`);
});

Specification
DeviceOrientation Event Specification # devicemotion

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`DeviceMotionEvent`	59	14	29	No	46	No	59	59	29	43	No	7.0
`DeviceMotionEvent`	31	12	6	11	18	17	4.4.3	31	6	18	4.2	2.0
`acceleration`	31	12	6	11	18	17	4.4.3	31	6	18	4.2	2.0
`accelerationIncludingGravity`	31	12	6	11	18	17	4.4.3	31	6	18	4.2	2.0
`interval`	31	12	6	11	18	17	4.4.3	31	6	18	4.2	2.0
`requestPermission_static`	No	No	No	No	No	No	No	No	No	No	14.5	No
`rotationRate`	31	12	6	11	18	17	4.4.3	31	6	18	4.2	2.0