title: Find Class name then remove id #
body: <p>Hi I am trying to remove all id from a div with a common class name:</p>
  
  <pre><code>$('div.panel-group').removeAttr('id', '');
  </code></pre>
  
  <p>But does not work. I do not want (e.g find id then remove id) as there a stacks of generated ID's </p>
  
  <p>Thx</p>