javascript - How to Set Zoom of Map to cover all markers visible Markers? -


i have created map markers fetching latlongs data mongodb collection.i have set center particular location , zoom level 5 want map should zoom-in or zoom-out based on marker's location.so dont have give particular location in center. please help.

the code below - 

 <div class="page-content">             <div id="tab-general">               <div id="map" style="height: 500px; width: 100%;">                </div>              </div>  </div>   <script type="text/javascript"> //load data mongo        data= <%-json.stringify(data)%>   </script>  <script type="text/javascript">   var latlngs = [];   (j=0;j<data.length;j++){       latlngs[j] = [data[j].latitude, data[j].longitude, data[j].time, data[j].name];    }  var map = new google.maps.map(document.getelementbyid('map'), {   center: new google.maps.latlng(23.2500, 77.4170),   zoom: 5,   maptypeid: google.maps.maptypeid.roadmap });  var infowindow = new google.maps.infowindow();  var marker, ,ext;   (i = 0; < latlngs.length; i++) {    marker = new google.maps.marker({     position: new google.maps.latlng(latlngs[i][0], latlngs[i][1]),     map: map   });    google.maps.event.addlistener(marker, 'click', (function(marker, i) {     return function() {       infowindow.setcontent("time - "+latlngs[i][2]+"<br>user name -"+latlngs[i][3]);       infowindow.open(map, marker);     }   })(marker, i)); }

thanks,

dia

what create latlngbounds object. add each marker, expand bounds include marker's location. after markers added, update map fit bounds, , adjust zoom automatically markers visible.

var bounds = new google.maps.latlngbounds();  (i = 0; < latlngs.length; i++) {     position = new google.maps.latlng(latlngs[i][0], latlngs[i][1]);      marker = new google.maps.marker({         position: position,         map: map     });      bounds.extend(position) }  map.fitbounds(bounds);

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