title: No response after click button login
body: <p>I currently create a PHP Login using Joget SSO. The Joget already have its own script of SSO. I follow the steps and if the username and password is matched, it will alert "login sucessfully" else, it will alert "login failed". Below is my code</p>
  
  <pre><code>    &lt;!DOCTYPE html&gt;
      &lt;html&gt;
      &lt;head&gt;
      &lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
       &lt;/head&gt;
      &lt;body&gt;
  
      &lt;h2&gt;Login Form&lt;/h2&gt;
  
      &lt;form &gt;
        &lt;div class="imgcontainer"&gt;
          &lt;img src="img_avatar2.png" alt="Avatar" class="avatar"&gt;
        &lt;/div&gt;
  
        &lt;div class="container"&gt;
          &lt;label for="uname"&gt;&lt;b&gt;Username&lt;/b&gt;&lt;/label&gt;
          &lt;input type="text" placeholder="Enter Username" name="username" required&gt;
  
          &lt;label for="psw"&gt;&lt;b&gt;Password&lt;/b&gt;&lt;/label&gt;
          &lt;input type="password" placeholder="Enter Password" name="psw" required&gt;
  
          &lt;button type="submit" onclick="loginCallback()"&gt;Login&lt;/button&gt;
          &lt;label&gt;
            &lt;input type="checkbox" checked="checked" name="remember"&gt; Remember me
          &lt;/label&gt;
        &lt;/div&gt;
  
        &lt;div class="container" style="background-color:#f1f1f1"&gt;
          &lt;button type="button" class="cancelbtn"&gt;Cancel&lt;/button&gt;
          &lt;span class="psw"&gt;Forgot &lt;a href="#"&gt;password?&lt;/a&gt;&lt;/span&gt;
        &lt;/div&gt;
      &lt;/form&gt;
  
      &lt;/body&gt;
      &lt;/html&gt;
  
      &lt;script type="text/javascript" src="http://localhost:8080/jw/js/jquery/jquery-1.9.1.min.js"&gt;&lt;/script&gt;
      &lt;script type="text/javascript" src="http://localhost:8080/jw/js/json/util.js" &gt;&lt;/script&gt;
  
      &lt;script type="text/javascript" &gt;
      $(document).ready(function(){
          var loginCallback = {
              success : function(response){
                  if(response.username != "roleAnonymous"){
                      alert("login successfully");
                  }else{
                      alert("login fail");
                  }
              }
          };
          AssignmentManager.login('https://workflow.topglove.com:10443/jw/web/json/directory/user/sso', 'admin', 'admin', loginCallback);
      });
      &lt;/script&gt;
  </code></pre>