title: Get selected radio buttons of certain class
body: <p>I'm trying to get the radio buttons that has a certain class that is selected.</p>
  
  <p>Getting the radio buttons of that class comes with </p>
  
  <pre><code>$("input:radio.someClass");
  </code></pre>
  
  <p>I thought that this would work to get the selected radio button -</p>
  
  <pre><code>$("input:radio.someClass:selected");
  </code></pre>
  
  <p>But that returns empty - what am I doing wrong? </p>