title: Change css class on child element
body: <p>I'm using jQuery to remove CSS class from my elements:</p>
  
  <pre><code>$('.input-group-addon').child($('.glyphicon.glyphicon-calendar').removeClass());    
  </code></pre>
  
  <p>Now on same action immediately I remove that class I want to add <code>myClass</code> for example so I tried: </p>
  
  <pre><code>$('.input-group-addon').child().addClass('myClass');
  </code></pre>
  
  <p>But this doesn't work, my element stays with <code>class=""</code> instead of <code>class="myClass"</code>.</p>