var map;
function initMap() {
  var geocoder = new google.maps.Geocoder();

  map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: 0, lng: 0},
    zoom: 8
  });

  geocoder.geocode({'address': "Paris"}, function(results, status) {
    if (status === 'OK') {
      map.setCenter(results[0].geometry.location);
    } else {
      alert('Geocode was not successful for the following reason: ' + status);
    }
  });


}