[javascript] Google MAP API v3: Center & Zoom on displayed markers

I use the following code to set markers on my map:

  var latLngs = []
  $.each(locations.markers, function(i, m){
   var myLatLng = new google.maps.LatLng(m.latitude, m.longitude);
   latLngs[i] = myLatLng                                          
   var marker = new google.maps.Marker({
    position: myLatLng,
    map: map,
    shadow: shadow,
    icon: image,
    shape: shape,
    title: m.city,
    zIndex: i
   });
  }) 

The markers show up on my map. Now I would like to center & zoom the map on these markers. How can I accomplish this? I have tried:

map.fitBounds(getBoundsForLatLngs(latLngs));

The console.log of latLngs gives out:

 [(46.793182, 7.146903) { b=46.793182,  more...}, (46.8077779, 7.1709386) { b=46.8077779,  more...}]

But it doesn't seem to work, and I get no error in the console. What am I doing wrong?

Try this function....it works...

$(function() {
        var myOptions = {
            zoom: 10,
            center: latlng,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
        var latlng_pos=[];
        var j=0;
         $(".property_item").each(function(){
            latlng_pos[j]=new google.maps.LatLng($(this).find(".latitude").val(),$(this).find(".longitude").val());
            j++;
            var marker = new google.maps.Marker({
                position: new google.maps.LatLng($(this).find(".latitude").val(),$(this).find(".longitude").val()),
                // position: new google.maps.LatLng(-35.397, 150.640),
                map: map
            });
        }
        );
        // map: an instance of google.maps.Map object
        // latlng: an array of google.maps.LatLng objects
        var latlngbounds = new google.maps.LatLngBounds( );
        for ( var i = 0; i < latlng_pos.length; i++ ) {
            latlngbounds.extend( latlng_pos[ i ] );
        }
        map.fitBounds( latlngbounds );



    });

In case you prefer more functional style:

// map - instance of google Map v3
// markers - array of Markers
var bounds = markers.reduce(function(bounds, marker) {
    return bounds.extend(marker.getPosition());
}, new google.maps.LatLngBounds());

map.setCenter(bounds.getCenter());
map.fitBounds(bounds);

for center and auto zoom on display markers

// map: an instance of google.maps.Map object

// latlng_points_array: an array of google.maps.LatLng objects

var latlngbounds = new google.maps.LatLngBounds( );

    for ( var i = 0; i < latlng_points_array.length; i++ ) {
        latlngbounds.extend( latlng_points_array[i] );
    }

map.fitBounds( latlngbounds );