title: Internet Explorer , Jquery $.post
body: <pre><code>$.post("example.php",function(data){
      alert(data); // result: undefined
  })
  </code></pre>
  
  <p><strong>Example.php</strong></p>
  
  <pre><code>hello ie are you ok?
  </code></pre>
  
  <p>Why is <code>alert(data)</code> undefined in IE? It works in other browsers.</p>