title: Json.stringify TypeError: Converting circular structure to JSON
body: <p>Here is the Marker reference</p>
  
  <pre><code>var markers = [];
  var marker = new google.maps.Marker({ position: e.latLng, map: map });  
  markers.push(marker); // add marker to the global array 
  </code></pre>
  
  <p>My loop to markers...</p>
  
  <pre><code>    var jsonObj = []; 
      for (var i = 0; i &lt; markers.length; i++)
      {
          jsonObj.push({ latitude: markers[i].position, map: markers[i].map }); //key
      }
  
      alert(JSON.stringify(jsonObj)); // error 
  </code></pre>