The angularAcceleration read-only property of the VRPose interface returns the angular acceleration of the VRDisplay at the current VRPose.timestamp, in meters per second per second.
The angularVelocity read-only property of the VRPose interface returns the angular velocity of the VRDisplay at the current VRPose.timestamp, in radians per second.
The hasOrientation read-only property of the VRPositionState interface returns a boolean indicating whether the VRPositionState.orientation property is valid (i.e. if the hardware is currently registering a valid orientation). If it is false, the orientation property will return null.
The hasPosition read-only property of the VRPositionState interface returns a boolean indicating whether the VRPositionState.position property is valid (i.e. if the hardware is currently registering a valid position). If it is false, the position property will return null.
The linearAcceleration read-only property of the VRPose interface returns the linear acceleration of the VRDisplay at the current VRPose.timestamp, in meters per second per second.
The linearVelocity read-only property of the VRPose interface returns the linear velocity of the VRDisplay at the current VRPose.timestamp, in meters per second.
The orientation read-only property of the VRPositionState interface returns the orientation of the sensor at the current VRPose.timestamp, as a quarternion value.
The timestamp read-only property of the VRPose interface returns the current time stamp of the system — a monotonically increasing value representing the time since the current app was started.
WebVTT is a format for displaying timed text tracks (e.g. subtitles or captions) with the <track> element. The primary purpose of WebVTT files is to add text overlays to a <video>. WebVTT is a text based format, which must be encoded in UTF-8 format. Where you can use spaces you can also use tabs.
The dialogArguments property returns the parameters that were passed into the window.showModalDialog() method. This lets you determine what parameters were specified when the modal dialog was created.
This property indicates whether the window is displayed in full screen mode or not. It is only reliable in Gecko 1.9 (Firefox 3) and later, see the Notes below.
The Window.history read-only property returns a reference to the History object, which provides an interface for manipulating the browser session history (pages visited in the tab or frame that the current page is loaded in).