title: Showing multiple markers on google maps
body: <p>My location finder is showing multiple markers, but i don't want that.
  I'm not that good with the Google API, so i hope you can help me.</p>
  
  <p>People need to fill in their address, and then he need to show the location. Without showing multiple markers. (only one)</p>
  
  <p>Here is the JS:</p>
  
  <pre><code>      var geocoder;
        var map;
  
        function initialize() {
          geocoder = new google.maps.Geocoder();
          var latlng = new google.maps.LatLng(52.132633, 5.291266);
          var myOptions = {
            zoom: 7,
            center: latlng,
            mapTypeId: google.maps.MapTypeId.ROADMAP
          };
          map = new google.maps.Map(document.getElementById("map_canvas"),
              myOptions);
        }
  
        function codeAddress() {
          var sAddress = document.getElementById("inputTextAddress").value;
          document.getElementById("map_canvas").style.removeProperty('display');
          geocoder.geocode( { 'address': sAddress}, function(results, status) {
              if (status == google.maps.GeocoderStatus.OK) {
  
                  map.setCenter(results[0].geometry.location);
                  map.setZoom(10);
  
                  var marker = new google.maps.Marker({
                      map: map, 
                      position: results[0].geometry.location
                  });
              } else {
                  alert("Helaas, er is iets fout gegaan. Foutcode: " + status);
              }
            });
        }
  </code></pre>