title: Get the value of the radio button that was selected before the user selects a new one
body: <p>If I have 3 radio buttons, is there a way through jQuery of finding out the value of the  one that was selected before the user clicks a new one?</p>
  
  <pre><code>&lt;div id="radio-group"&gt;
      &lt;input type="radio" id="radio-1" name="radios" value="1" checked="true" /&gt;
      &lt;input type="radio" id="radio-2" name="radios" value="2" /&gt;
      &lt;input type="radio" id="radio-3" name="radios" value="3" /&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>In the example avove, if the user clicks on <code>radio-3</code>, I need a way to get <code>1</code>, so that I can carry out some formattion to it. Thanks.</p>