GeolocationCoordinates.speed read-only property is a
double representing the velocity of the device in meters per second. This value is
null if the implementation is not able to measure it.
let speed = geolocationCoordinatesInstance.speed
double representing the velocity of the device in meters per second.
The definition of 'GeolocationCoordinates.speed' in that specification.
No compatibility data found. Please contribute data for "api.GeolocationCoordinates.speed" (depth: 1) to the MDN compatibility data repository.