Google Maps with Multiple Information in one marker

Question

I am developing a web application that contains some information about place. That place may have more than one agenda. Can I show more information in one marker, such as st

Answer 1

Possible way to achieve it(there may be many ways):

1. create some object at the begin of the callback of downloadUrl()

   var markerContents={};

2. inside the loop where you create the markers populate this object with properties. As name for the properties assign the string-representation of the point(will be returned by LatLng.toString()). Create a variable of this string:

   var markerId = point.toString();

   First you have to check now if this property already exists, when not create it and set the value to an empty array:

   if(!markerContents[markerId]){
      markerContents[markerId] = [];
    } 

   Then, after the line where create the html, push the html into the array:

   markerContents[markerId].push(html);

3. to avoid the creation of multiple markers at the same position, leave the current iteration before you create the marker, when there are more than 1 item inside the array:

   if(markerContents[markerId].length>1){return;}

4. modify the call of bindInfoWindow(); , pass the array as argument instead of html

   bindInfoWindow(marker, map, infoWindow, markerContents[markerId]);

5. Modify the click-listener of the Marker so that he may use the content of the array as InfoWindowContent

    function bindInfoWindow(marker, map, infoWindow, html) {
      google.maps.event.addListener(marker, 'click', function() {
        infoWindow.setContent(html.join('<hr/>'));
        infoWindow.open(map, marker);
      });
    }

There will no longer be multiple markers at the same position, instead there will be 1 marker with the content set to the html of all markers with this position, delimited by a horizontal rule.