title: Internet Explorer 9 and jQuery
body: <p>Why doesn't this code work in Internet Explorer 9?</p>
  
  <pre><code>function calc() {
    alert('aaa');
  }
  $('body').delegate('input', 'change', function(){
    // In here, $(this) is the input that has changed
    calc();
  });
  $('body').delegate('select', 'change', function(){
    calc();
  });
  </code></pre>