Which Geolocation API method is used to continuously track a user's position?

Which Geolocation API method is used to continuously track a user's position?

• A. WatchPosition
• B. GetCurrentPosition
• C. Locate
• D. TrackPosition

Answer: (A)

Continuously tracking a user's position is done by setting up a watcher that calls your callback every time the device reports a new location. The method that does this is watchPosition. It keeps monitoring and delivers updates until you stop it. You provide a success callback to handle each update, and you can also include an error callback and an options object to control accuracy, update frequency, and timing. When you start it, you get a watch ID you can use later with clearWatch to stop tracking. GetCurrentPosition, on the other hand, fetches the location just once and then finishes. Locate and TrackPosition aren’t standard Geolocation API methods in browsers, so they aren’t used for continuous tracking.

Continuously tracking a user's position is done by setting up a watcher that calls your callback every time the device reports a new location. The method that does this is watchPosition. It keeps monitoring and delivers updates until you stop it. You provide a success callback to handle each update, and you can also include an error callback and an options object to control accuracy, update frequency, and timing. When you start it, you get a watch ID you can use later with clearWatch to stop tracking. GetCurrentPosition, on the other hand, fetches the location just once and then finishes. Locate and TrackPosition aren’t standard Geolocation API methods in browsers, so they aren’t used for continuous tracking.