title: How to remove a span from list by span's class name by jquery
body: <p>I'm dynamically appending a <code>span</code> class to an <code>li</code> element</p>
  
  <pre><code>li_element.append("&lt;span class='delay_loading'&gt;&lt;img id='delay_ajax-loader' style='display:none;' src='/static/img/ajax-delay.gif' /&gt;&lt;/span&gt;")
  </code></pre>
  
  <p>How can I remove the added <code>span</code> class by its class name?</p>