title: how to calculate polyline distance?
body: <pre><code>function createLine()
  {
  
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(7.5653, 80.4303);
  var mapOptions = {
      zoom: 8,
      center: latlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  map = new google.maps.Map(document.getElementById("directionpanel"), mapOptions);
  
  var address = document.getElementById('startvalue').value;
  var address2 = document.getElementById('endvalue').value;
  
  var temp, temp2;
  
  geocoder.geocode({ 'address': address }, function (results, status) {
      temp = results[0].geometry.location;
      geocoder.geocode({ 'address': address2 }, function (results, status) {
          temp2 = results[0].geometry.location;
  
      var route = [
        temp,
        temp2
      ];
  
      var polyline = new google.maps.Polyline({
          path: route,
          strokeColor: "#ff0000",
          strokeOpacity: 0.6,
          strokeWeight: 5
      });
  
      polyline.setMap(map);
      });
  });
  }
  </code></pre>
  
  <p>This code work fine. I want to calculate the distance of the line which I created. I want to display this value in meters via an alert. Please help me... (In this case two points connect directly with the line. I want to calculate that direct line distance. )</p>