title: Getting error: "Uncaught TypeError: Cannot read property 'length' of undefined"
body: <p>i am successfully able to get response from wsdl using my client side code by checking chrome dev tool feed retrieve success and various fields like <code>objid</code>, <code>personid</code>, <code>personname</code>, <code>persongroup</code> displayed in chrome dev console. but <code>resultset</code> retrieval is displayed with the error </p>
  
  <blockquote>
    <p>Uncaught TypeError: Cannot read property 'length' of undefined"</p>
  </blockquote>
  
  <p>i need only personid and name to be displayed</p>
  
  <p>main.js</p>
  
  <pre><code>currentPage = {};
  
  currentPage.init = function(){
      WL.Logger.debug("MainPage :: init");
  };
  
  function validate(){
  
      var username=$('#username').val();
      var password=$('#userpwd').val();
  
      busyIndicator.show();
  
      var params = {
              "process": {"username":username,"userpwd":password}
      };
          var invocationData = {
                  adapter : 'SoapAdapter1',
                  procedure : 'userlogin_ep_process',
                  parameters : [params]
              };
          //{"process":{"username":"$('#username').val()","userpwd":"$('#userpwd').val()"}}
          WL.Client.invokeProcedure(invocationData,{
              onSuccess : loadFeedsSuccess,
              onFailure : loadFeedsFailure
          });
      }
  
      function loadFeedsSuccess(result){
          WL.Logger.debug("Feed retrieve success");
          busyIndicator.hide();
  
      alert(result.responseJSON.Envelope.Body.processResponse.PERSON_ID);
      //alert is priniting the value its working
      displayFeeds(result.responseJSON.Envelope.Body.processResponse);
  
      }
  
      function loadFeedsFailure(result){
          WL.Logger.error("Feed retrieve failure");
          busyIndicator.hide();
          WL.SimpleDialog.show("Inquiry", "Service not available. Try again later.", 
                  [{
                      text : 'Reload',
                      handler : WL.Client.reloadApp 
                  },
                  {
                      text: 'Close',
                      handler : function() {}
                  }]
              );
      }
  
          function displayFeeds(result){
              var ul = $('#mytable');
         //here i get length undefined error
              for (var i = 0; i &lt; result.responseJSON.length; i++) {
  
                  var li = $('&lt;li/&gt;').html("PERSONID:" +result[i].PERSONID);
                   li.append($('&lt;li/&gt;').html("PERSONNAME:" +result[i].PERSONNAME));
  
                   li.append($('&lt;hr&gt;'));
                   ul.append(li);
             }
          }
  </code></pre>
  
  <p>index.html</p>
  
  <pre><code>&lt;label&gt;username&lt;/label&gt; &lt;input type="text" id="username"&gt;&lt;br&gt;&lt;br&gt;
  &lt;label&gt;password&lt;/label&gt; &lt;input type="text" id="userpwd"&gt;&lt;br&gt;&lt;br&gt;
  &lt;input type="submit" value="login" onclick="validate();"&gt;
  &lt;ul id="mytable"&gt;&lt;/ul&gt;
  </code></pre>
  
  <p>The response: </p>
  
  <pre><code>{
     "Envelope": {
        "Body": {
           "processResponse": {
              "ERROR_CODE": "S",
              "ERROR_MSG": "Login Successful",
              "GROUPS_ID": "76721",
              "PERSON_ID": "309236",
              "PERSON_LOGIN": "Y",
              "PERSON_NAME": "Welcome! ashanka",
              "PERSON_ROLE": "Y",
              "PERSON_UID": "1014336",
              "client": "http:\/\/xmlns.oracle.com\/InternetMobile\/AbsManagement\/BPELProcessUserLogin",
              "xmlns": "http:\/\/xmlns.oracle.com\/InternetMobile\/AbsManagement\/BPELProcessUserLogin"
           }
        },
        "Header": {
           "FaultTo": {
              "Address": "http:\/\/www.w3.org\/2005\/08\/addressing\/anonymous"
           },
           "MessageID": "urn:C9C4DB207D5211E5BF9B25E60F40847D",
           "ReplyTo": {
              "Address": "http:\/\/www.w3.org\/2005\/08\/addressing\/anonymous"
           }
        },
        "env": "http:\/\/schemas.xmlsoap.org\/soap\/envelope\/",
        "wsa": "http:\/\/www.w3.org\/2005\/08\/addressing"
     },
     "errors": [
     ],
     "info": [
     ],
     "isSuccessful": true,
     "responseHeaders": {
        "Content-Length": "1017",
        "Content-Type": "text\/xml; charset=utf-8",
        "Date": "Wed, 28 Oct 2015 09:03:42 GMT",
        "SOAPAction": "\"\"",
        "X-ORACLE-DMS-ECID": "9e10a9dcf92c80fa:-8e91c30:150a34b187a:-8000-0000000000053e79",
        "X-Powered-By": "Servlet\/2.5 JSP\/2.1"
     },
     "responseTime": 106,
     "statusCode": 200,
     "statusReason": "OK",
     "totalTime": 122,
     "warnings": [
     ]
  }
  </code></pre>