An event handler for the deviceorientation event, which contains information about a relative device orientation change.

API Device Orientation Mobile Orientation Property

API Device Orientation Mobile Orientation Property

Increasingly, web-enabled devices are capable of determining their orientation; that is, they can report data indicating changes to their orientation with relation to the pull of gravity. In particular, hand-held devices such as mobile phones can use this information to automatically rotate the display to remain upright, presenting a wide-screen view of the web content when the device is rotated so that its width is greater than its height.

API Device Orientation Firefox OS Intermediate Mobile Motion Orientation Reference

API Device Orientation Experimental Expérimental Firefox OS Mobile Motion Orientation

The acceleration property returns the amount of acceleration recorded by the device, in meters per second squared (m/s²).

API Device Orientation Firefox OS Mobile Motion NeedsExample Orientation Property

The accelerationIncludingGravity property returns the amount of acceleration recorded by the device, in meters per second squared (m/s²). Unlike DeviceMotionEvent.acceleration which compensates for the influence of gravity, its value is the sum of the acceleration of the device as induced by the user and the acceleration caused by gravity.

API Device Orientation Firefox OS Mobile Motion NeedsExample Orientation Property

Returns the interval, in milliseconds, at which data is obtained from the underlaying hardware. You can use this to determine the granularity of motion events.

API Device Orientation Firefox OS Mobile Motion NeedsExample Orientation Property

An event handler for the devicemotion events sent to the window.

API Device Orientation Firefox OS Mobile Motion Orientation Property

Advanced CSSOM View Guide Screen Orientation

API Device Orientation API Experimental Interface Reference

API CSSOM View Method NeedsMarkupWork Screen Orientation

An event handler for the orientationchange events sent to the screen object.

API CSSOM View Property Screen Orientation

The Screen.orientation property give the current orientation of the screen.

API CSSOM View NeedsMarkupWork Property Screen Orientation

API CSSOM View Method NeedsMarkupWork Screen Orientation

Returns the rate at which the device is rotating around each of its axes in degrees per second.

API Device Orientation DOM DOM Reference Firefox OS Mobile Motion NeedsExample Orientation Property Reference

A DeviceAcceleration object provides information about the amount of acceleration the device is experiencing along all three axes.

API Device Orientation Events Experimental Expérimental Interface NeedsExample Reference Référence

Indicates whether or not the device is providing orientation data absolutely (that is, in reference to the Earth's coordinate frame) or using some arbitrary frame determined by the device. See Orientation and motion data explained for details.

API Device Orientation API DeviceOrientationEvent NeedsExample NeedsMarkupWork Property Reference

Returns the rotation of the device around the X axis; that is, the number of degrees, ranged between -180 and 180,  by which the device is tipped forward or backward. See Orientation and motion data explained for details.

API Device Orientation API DeviceOrientationEvent NeedsBetterSpecLink NeedsExample NeedsMarkupWork Property Reference

Returns the rotation of the device around the Y axis; that is, the number of degrees, ranged between -90 and 90, by which the device is turned left or right. See Orientation and motion data explained for details.

API Device Orientation API DeviceOrientationEvent NeedsBetterSpecLink NeedsCompatTable NeedsExample NeedsMarkupWork Property Reference

The orientation read-only property of the VRPositionState interface returns the orientation of the sensor at the current VRPose.timestamp, as a quarternion value.

API Experimental Expérimental Orientation Property Reference Référence Virtual Reality VR VRPose WebVR