gelary-part2-2.js

function updatePosition (event) {
  var HEREHQcoordinates = {
    lat: event.coords.latitude,
    lng: event.coords.longitude
  };

  var marker = new H.map.Marker(HEREHQcoordinates);
  map.addObject(marker);
  map.setCenter(HEREHQcoordinates);
}

navigator.geolocation.watchPosition(updatePosition);