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DeviceOrientationEvent

The DeviceOrientationEvent object provides web developers with information from the physical orientation of the device running the web page.

DeviceOrientationEvent.DeviceOrientationEvent(): Creates a new DeviceOrientationEvent.

DeviceOrientationEvent.absolute Read only: A boolean that indicates whether or not the device is providing orientation data absolutely.
DeviceOrientationEvent.alpha Read only: A number representing the motion of the device around the z axis, express in degrees with values ranging from 0 (inclusive) to 360 (exclusive).
DeviceOrientationEvent.beta Read only: A number representing the motion of the device around the x axis, express in degrees with values ranging from -180 (inclusive) to 180 (exclusive). This represents a front to back motion of the device.
DeviceOrientationEvent.gamma Read only: A number representing the motion of the device around the y axis, express in degrees with values ranging from -90 (inclusive) to 90 (exclusive). This represents a left to right motion of the device.
DeviceOrientationEvent.webkitCompassHeading Non-standard Read only: A number represents the difference between the motion of the device around the z axis of the world system and the direction of the north, express in degrees with values ranging from 0 to 360.
DeviceOrientationEvent.webkitCompassAccuracy Non-standard Read only: The accuracy of the compass means that the deviation is positive or negative. It's usually 10.

window.addEventListener("deviceorientation", (event) => {
  console.log(`${event.alpha} : ${event.beta} : ${event.gamma}`);
});

Specification
DeviceOrientation Event Specification # deviceorientation

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`DeviceOrientationEvent`	59	14	17	No	46	No	59	59	17	43	No	7.0
`DeviceOrientationEvent`	7 Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the `deviceorientationabsolute` event.	12	6 Firefox 3.6, 4, and 5 supported `mozOrientation` instead of the standard DeviceOrientationEvent interface.	11	15	17	3 Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the `deviceorientationabsolute` event.	18 Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the `deviceorientationabsolute` event.	6 Firefox 3.6, 4, and 5 supported `mozOrientation` instead of the standard DeviceOrientationEvent interface.	14	4.2	1.0 Before Samsung Internet 5.0, Samsung Internet provided absolute values instead of relative values for this event. Developers still needing absolute values may use the `deviceorientationabsolute` event.
`absolute`	7	12	6	11	15	17	4.4	18	6	14	17	1.0
`alpha`	7	12	6	11	15	17	3	18	6	14	4.2	1.0
`beta`	7	12	6	11	15	17	3	18	6	14	4.2	1.0
`gamma`	7	12	6	11	15	17	3	18	6	14	4.2	1.0
`requestPermission_static`	No	No	No	No	No	No	No	No	No	No	14.5	No