Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The GeolocationCoordinates.heading
read-only property is a double
representing the direction in which the device is traveling. This value, specified in degrees, indicates how far off from heading due north the device is. 0
degrees represents true north, and the direction is determined clockwise (which means that east is 90
degrees and west is 270
degrees). If GeolocationCoordinates.speed
is 0
, heading
is NaN
. If the device is not able to provide heading information, this value is null
.