title: Select elements without any class
body: <p>I need to find, via jQuery selectors, all spans in a page that have no class.</p>
  
  <p>Example:</p>
  
  <pre><code>&lt;span class='Cool'&gt;do not found me&lt;/span&gt;
  &lt;span&gt;me, me, take me please!!!&lt;/span&gt;
  </code></pre>