title: How to get javascript values on code behind in c#
body: <p>I need to get javascript values on code behind in c#.I know i can use hidden field but there is no server control on page for postback.Please tell me how can get vales in code behind.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;Facebook Get Logged in User Details UserName,Email,Profile Image&lt;/title&gt;
      &lt;script src="jquery-1.6.2.min.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;script&gt;
      // Load the SDK Asynchronously
  
  
  
      (function (d) {
          var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
          if (d.getElementById(id)) { return; }
          js = d.createElement('script'); js.id = id; js.async = true;
          js.src = "//connect.facebook.net/en_US/all.js";
          ref.parentNode.insertBefore(js, ref);
      } (document));
  
      // Init the SDK upon load
      window.fbAsyncInit = function () {
          FB.init({
              appId: 'APPID', // App ID
              channelUrl: '//' + window.location.hostname + '/channel', // Path to your Channel File
              status: true, // check login status
              cookie: true, // enable cookies to allow the server to access the session
              xfbml: true  // parse XFBML
          });
  
          // listen for and handle auth.statusChange events
          FB.Event.subscribe('auth.statusChange', function (response) {
              if (response.authResponse) {
                  // user has auth'd your app and is logged into Facebook
                  var uid = "http://graph.facebook.com/" + response.authResponse.userID + "/picture";
                  FB.api('/me', function (me) {
                      document.getElementById('auth-displayname').innerHTML = me.name;
                      document.getElementById('myJSString').value = me.name;
  
                      alert(document.getElementById('myJSString').value);
  
                      document.getElementById('Email').innerHTML = me.email;
                      document.getElementById('profileImg').src = uid;
  
                      //  document.getElementById('ctl00_CPHDefault_tcTPS_TPProd_ctl01_tcProduction_TPNewT‌​itlesStatus_ChangedRowsIndicesHiddenField').value = uid;
                     // alert('yyy');
  
                  })
                  document.getElementById('auth-loggedout').style.display = 'none';
                  document.getElementById('auth-loggedin').style.display = 'block';
              } else {
                  // user has not auth'd your app, or is not logged into Facebook
                  document.getElementById('auth-loggedout').style.display = 'block';
                  document.getElementById('auth-loggedin').style.display = 'none';
              }
          });
          $("#auth-logoutlink").click(function () { FB.logout(function () { window.location.reload(); }); });
      }
  
  
  
  
  
  &lt;/script&gt;
  &lt;h1&gt;
  Facebook Login Authentication Example&lt;/h1&gt;
  &lt;div id="auth-status"&gt;
  &lt;div id="auth-loggedout"&gt;
  &lt;div id="Result"  class="fb-login-button" autologoutlink="true" scope="email,user_checkins"&gt;Login&lt;/div&gt;
  &lt;/div&gt;
  &lt;div id="auth-loggedin" style="display: none"&gt;
  Name: &lt;b&gt;&lt;span id="auth-displayname"&gt;&lt;/span&gt;&lt;/b&gt;(&lt;a href="#" id="auth-logoutlink"&gt;logout&lt;/a&gt;)&lt;br /&gt;
  Email: &lt;b&gt;&lt;span id="Email"&gt;&lt;/span&gt;&lt;/b&gt;&lt;br /&gt;
  Profile Image: &lt;img id="profileImg" /&gt;
  
  &lt;form runat="server"&gt;
  &lt;asp:HiddenField runat="server" id="myJSString" /&gt;
  
  &lt;/form&gt;
  &lt;/div&gt;
  &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>You can see there is no server control so how i can get NAME,UID variables in code behind.</p>
  
  <p>Thanks</p>