Geolocation API in React Components

navigator.geolocation.getCurrentPosition(successCallback, errorCallback, options) requests the device location once. The success callback receives a GeolocationPosition object. This is appropriate when you need the location once, such as finding the nearest store on button click, rather than tracking ongoing movement.

navigator.geolocation.watchPosition(successCallback, errorCallback, options) continuously fires the callback whenever the device position changes. It returns a numeric watchId. This is suitable for real-time use cases like delivery tracking or turn-by-turn navigation where the position must stay current.