Web APIs (navigator, geolocation, history)

What is the purpose of the clearWatch() method in this code?

let watchId;

function startTracking() {
  if (navigator.geolocation) {
    watchId = navigator.geolocation.watchPosition(updatePosition, handleError);
  }
}

function stopTracking() {
  if (watchId) {
    navigator.geolocation.clearWatch(watchId);
    watchId = null;
  }
}

To clear the watch history
To stop the browser from tracking the user's location
The clearWatch() method is used to stop location tracking: 1) It terminates the ongoing location monitoring previously started with watchPosition(), 2) It takes the watch ID returned by watchPosition() as its parameter to identify which watch to stop, 3) After calling clearWatch(), the success and error callbacks will no longer be invoked, 4) This is crucial for preserving battery life when location updates are no longer needed, 5) The code properly stores the watch ID when starting tracking and nullifies it after clearing, 6) This pattern represents a best practice for implementing location tracking with proper cleanup, 7) Without calling clearWatch(), location services would continue running in the background, consuming resources, 8) Similar to removing event listeners, clearing watches is an important part of proper resource management in web applications.
To clear cached location data
To reset the error handler

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