title: directionDisplay.setDirections() a.lat is not a function
body: <p>I am setting the directions in map using direction.setDirection method and getting directions form stored json file. When i load directions without <strong>waypoints</strong>, it works fine. But when i load directions with waypoints it gives me error <strong>a.lat is not a function</strong>. Display starting location (A) and one waypoint on map. </p>
  
  <p><a href="https://i.stack.imgur.com/V1VH7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V1VH7.png" alt="enter image description here"></a></p>
  
  <p>code to load directions on map</p>
  
  <pre><code>function route() {
      $.ajax({
          type: 'POST',
          url: '/Home/GetRoute',
          success: function (response) {
              //alert(response);
              var route = JSON.parse(response);
              alert(route.Data);
              //alert(data);
  
              directionDisplay.setDirections(JSON.parse(route.Data));
          },
          error: function (error) {
              alert('Error: ' + error);
          }
  
      });
  </code></pre>
  
  <p><strong>Update:</strong> i am double parsing it because its an object with attribute Data.
  response is an object with property Data which contains json string.</p>
  
  <p>{ "Data": "{"geocoded_waypoints":[{"geocoder_status":"OK","p... so on</p>
  
  <p>So first i parse the obj to get the obj.Data output and then parse obj.Data to get inner json string of obj.Data.</p>
  
  <p>this is how i am saving the route:</p>
  
  <pre><code>function saveRoute()
      {
          var result = directionDisplay.getDirections();
  
          alert(JSON.stringify(result));
          var url = "/Home/SaveRoute";
          directionDisplay.setDirections(result);
          $.ajax({
              type: 'POST',
              url: url,
              data: JSON.stringify({ jsonRoute: { Data: JSON.stringify(result) } }), //JSON.stringify(result)
              contentType: 'application/json; charset=utf-8',
              dataType: 'json',
              async: true,
              processData: false,
              cache:false,
              success: function (data) {
                  alert("Success");
              },
              error: function (error) {
                  alert("Error: "+error.statusText);
              }
          });
  
      }
  </code></pre>
  
  <p>and here is json file data that i am loading:</p>
  
  <pre><code>    {   "Data": "{\"geocoded_waypoints\":[{\"geocoder_status\":\"OK\",\"place_id\"
  :\"ChIJ3dTEVV0DGTkRXqaSzKf50y8\",\"types\":[\"sublocality_level_1\",\"sublocal
  ity\",\"political\"]},{\"geocoder_status\":\"OK\",\"place_id\":\"ChIJE4xqmkIDG
  TkRQGFN4MjBPzU\",\"types\":[\"route\"]},{\"geocoder_status\":\"OK\",\"place_id
  \":\"ChIJifnoE2gDGTkRtEVKM-PhYGU\",\"types\":[\"route\"]}],\"routes\":[{\"boun
  ds\":{\"south\":31.534670000000002,\"west\":74.29780000000001,\"north\":31.535
  54,\"east\":74.29865000000001},\"copyrights\":\"Map data ©2016
  Google\",\"legs\":[{\"distance\":{\"text\":\"0.2
  km\",\"value\":210},\"duration\":{\"text\":\"1
  min\",\"value\":52},\"end_address\":\"Poonch Rd, Lahore, Pakistan\",\"end_loca
  tion\":{\"lat\":31.5346676,\"lng\":74.29839379999999},\"start_address\":\"Sama
  nabad, Lahore, Pakistan\",\"start_location\":{\"lat\":31.5355392,\"lng\":74.29
  846520000001},\"steps\":[{\"distance\":{\"text\":\"19
  m\",\"value\":19},\"duration\":{\"text\":\"1 min\",\"value\":4},\"end_location
  \":{\"lat\":31.5354648,\"lng\":74.29864729999997},\"polyline\":{\"points\":\"c
  hn_EmlndMJ]BE\"},\"start_location\":{\"lat\":31.5355392,\"lng\":74.29846520000
  001},\"travel_mode\":\"DRIVING\",\"encoded_lat_lngs\":\"chn_EmlndMJ]BE\",\"pat
  h\":[{\"lat\":31.53554,\"lng\":74.29847000000001},{\"lat\":31.535480000000003,
  \"lng\":74.29862},{\"lat\":31.535460000000004,\"lng\":74.29865000000001}],\"la
  t_lngs\":[{\"lat\":31.53554,\"lng\":74.29847000000001},{\"lat\":31.53548000000
  0003,\"lng\":74.29862},{\"lat\":31.535460000000004,\"lng\":74.29865000000001}]
  ,\"instructions\":\"Head &lt;b&gt;southeast&lt;/b&gt; on &lt;b&gt;Rajput Street&lt;/b&gt;\",\"maneuver
  \":\"\",\"start_point\":{\"lat\":31.5355392,\"lng\":74.29846520000001},\"end_p
  oint\":{\"lat\":31.5354648,\"lng\":74.29864729999997}},{\"distance\":{\"text\"
  :\"21 m\",\"value\":21},\"duration\":{\"text\":\"1 min\",\"value\":9},\"end_lo
  cation\":{\"lat\":31.5352878,\"lng\":74.29856440000003},\"maneuver\":\"turn-ri
  ght\",\"polyline\":{\"points\":\"sgn_EqmndM@@^N\"},\"start_location\":{\"lat\"
  :31.5354648,\"lng\":74.29864729999997},\"travel_mode\":\"DRIVING\",\"encoded_l
  at_lngs\":\"sgn_EqmndM@@^N\",\"path\":[{\"lat\":31.535460000000004,\"lng\":74.
  29865000000001},{\"lat\":31.53545,\"lng\":74.29864},{\"lat\":31.53529000000000
  3,\"lng\":74.29856000000001}],\"lat_lngs\":[{\"lat\":31.535460000000004,\"lng\
  ":74.29865000000001},{\"lat\":31.53545,\"lng\":74.29864},{\"lat\":31.535290000
  000003,\"lng\":74.29856000000001}],\"instructions\":\"Turn &lt;b&gt;right&lt;/b&gt;\",\"st
  art_point\":{\"lat\":31.5354648,\"lng\":74.29864729999997},\"end_point\":{\"la
  t\":31.5352878,\"lng\":74.29856440000003}},{\"distance\":{\"text\":\"0.1
  km\",\"value\":103},\"duration\":{\"text\":\"1 min\",\"value\":25},\"end_locat
  ion\":{\"lat\":31.535005,\"lng\":74.29780319999998},\"maneuver\":\"turn-right\
  ",\"polyline\":{\"points\":\"qfn_E_mndM_@pAHHd@Vh@b@\"},\"start_location\":{\"
  lat\":31.5352878,\"lng\":74.29856440000003},\"travel_mode\":\"DRIVING\",\"enco
  ded_lat_lngs\":\"qfn_E_mndM_@pAHHd@Vh@b@\",\"path\":[{\"lat\":31.5352900000000
  03,\"lng\":74.29856000000001},{\"lat\":31.53545,\"lng\":74.29815},{\"lat\":31.
  535400000000003,\"lng\":74.2981},{\"lat\":31.535210000000003,\"lng\":74.297980
  00000001},{\"lat\":31.535000000000004,\"lng\":74.29780000000001}],\"lat_lngs\"
  :[{\"lat\":31.535290000000003,\"lng\":74.29856000000001},{\"lat\":31.53545,\"l
  ng\":74.29815},{\"lat\":31.535400000000003,\"lng\":74.2981},{\"lat\":31.535210
  000000003,\"lng\":74.29798000000001},{\"lat\":31.535000000000004,\"lng\":74.29
  780000000001}],\"instructions\":\"Turn &lt;b&gt;right&lt;/b&gt;\",\"start_point\":{\"lat\"
  :31.5352878,\"lng\":74.29856440000003},\"end_point\":{\"lat\":31.535005,\"lng\
  ":74.29780319999998},\"Hc\":[{\"path\":[{\"lat\":31.535290000000003,\"lng\":74
  .29856000000001},{\"lat\":31.5354257,\"lng\":74.29821700000002}],\"polyline\":
  {},\"travel_mode\":\"DRIVING\"},{\"path\":[{\"lat\":31.5354257,\"lng\":74.2982
  1700000002},{\"lat\":31.53545,\"lng\":74.29815},{\"lat\":31.535400000000003,\"
  lng\":74.2981},{\"lat\":31.535210000000003,\"lng\":74.29798000000001},{\"lat\"
  :31.535000000000004,\"lng\":74.29780000000001}],\"polyline\":{},\"travel_mode\
  ":\"DRIVING\"}]},{\"distance\":{\"text\":\"67
  m\",\"value\":67},\"duration\":{\"text\":\"1 min\",\"value\":14},\"end_locatio
  n\":{\"lat\":31.5346676,\"lng\":74.29839379999999},\"maneuver\":\"turn-left\",
  \"polyline\":{\"points\":\"wdn_EghndM@E|@iB@E\"},\"start_location\":{\"lat\":3
  1.535005,\"lng\":74.29780319999998},\"travel_mode\":\"DRIVING\",\"encoded_lat_
  lngs\":\"wdn_EghndM@E|@iB@E\",\"path\":[{\"lat\":31.535000000000004,\"lng\":74
  .29780000000001},{\"lat\":31.534990000000004,\"lng\":74.29783},{\"lat\":31.534
  68,\"lng\":74.29836},{\"lat\":31.534670000000002,\"lng\":74.29839000000001}],\
  "lat_lngs\":[{\"lat\":31.535000000000004,\"lng\":74.29780000000001},{\"lat\":3
  1.534990000000004,\"lng\":74.29783},{\"lat\":31.53468,\"lng\":74.29836},{\"lat
  \":31.534670000000002,\"lng\":74.29839000000001}],\"instructions\":\"Turn &lt;b&gt;l
  eft&lt;/b&gt;\",\"start_point\":{\"lat\":31.535005,\"lng\":74.29780319999998},\"end_
  point\":{\"lat\":31.5346676,\"lng\":74.29839379999999}}],\"via_waypoint\":[{\"
  location\":{\"lat\":31.5354257,\"lng\":74.29821700000002},\"step_index\":2,\"s
  tep_interpolation\":0.3536570332799496}],\"via_waypoints\":[{\"lat\":31.535425
  7,\"lng\":74.29821700000002}]}],\"overview_polyline\":\"chn_EmlndMNc@`@P_@pAn@
  `@h@b@@E~@oB\",\"summary\":\"Rajput Street\",\"warnings\":[],\"waypoint_order\
  ":[],\"overview_path\":[{\"lat\":31.53554,\"lng\":74.29847000000001},{\"lat\":
  31.535460000000004,\"lng\":74.29865000000001},{\"lat\":31.535290000000003,\"ln
  g\":74.29856000000001},{\"lat\":31.53545,\"lng\":74.29815},{\"lat\":31.5352100
  00000003,\"lng\":74.29798000000001},{\"lat\":31.535000000000004,\"lng\":74.297
  80000000001},{\"lat\":31.534990000000004,\"lng\":74.29783},{\"lat\":31.5346700
  00000002,\"lng\":74.29839000000001}]}],\"status\":\"OK\",\"request\":{\"origin
  \":\"Samanabad, Lahore, Punjab, Pakistan\",\"destination\":{\"lat\":31.5346676
  ,\"lng\":74.29839379999999},\"travelMode\":\"DRIVING\",\"Xc\":1,\"waypoints\":
  [{\"location\":{\"lat\":31.535360412959733,\"lng\":74.29818126631949},\"stopov
  er\":false}],\"optimizeWaypoints\":false,\"mg\":17},\"j\":true}" }
  </code></pre>