title: Jquery $.post return empty value
body: <p>I use two $.post in jQuery</p>
  
  <p>But second $.post return EMPTY value</p>
  
  <p>My jQuery code :</p>
  
  <pre><code>var id;
  $.post('page.php', {id:id}, function(data){
      var stat;
      $.post('page.php', {stat:stat}, function(newdata){
          alert(newdata);
      });
  });
  </code></pre>
  
  <p>And page.php code :</p>
  
  <pre><code>if(isset($_POST['stat'])){
      echo "test";
  }
  </code></pre>
  
  <ul>
  <li>In console tab not show Error</li>
  </ul>