Question

I am trying to display a simple marker on my map.
I follow all the steps as shown in the example but no markers attaches.

this is the block with script:
which is the bug?

why don not I see the marker?

<script type="text/javascript">
  function initialize() {
    var myOptions = {
      zoom: 8,
      center: new google.maps.LatLng(43.1711696, 11.351473),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
   var map = new google.maps.Map(document.getElementById('object_map'),

        myOptions);  
        var marker= new google.maps.Marker ({ 
        position: LatLng, 
        title:"Mandolino"}); 

 }

   google.maps.event.addDomListener(window, 'load', initialize)


</script>

Answer 1

Simple example of creating markers on a map :

// this is list of markers with title / long and lat
var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
];

// This creates the map with zoom level / default center and map type
var map = new google.maps.Map(document.getElementById('map'), {
  zoom: 10,
  center: new google.maps.LatLng(-33.92, 151.25),
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

// this loops the array of marker locations
for (i = 0; i < locations.length; i++) { 
  // this creates the markers and adds them to the map 
  marker = new google.maps.Marker({
     position: new google.maps.LatLng(locations[i][1], locations[i][2]),
     map: map
  });
}

Working example : http://jsfiddle.net/QvNUF/95/

Update

To add a single marker do this :

var marker = new google.maps.Marker({
     position: new google.maps.LatLng(<yourlat>, <yourlong>),
     map: <yourmap>
});

you will need to replace <yourlat> with the latitude of the marker position, <yourlong> with the longitude of your marker position and <yourmap> with the map variable you created