title: how to group radio buttons based on same class instead of same name
body: <p>Is there a way to group the set of radio buttons that share the same class.</p>
  
  <p>I want to be able to be able to check the radio button from each set.</p>
  
  <p>Currently it allows me to check only one radio button (as I know because of same name)</p>
  
  <p>Is there a JQuery way either ?</p>
  
  <p>Example:</p>
  
  <p><strong>SET A</strong></p>
  
  <pre><code>&lt;input type="radio" name="item[]" class="a" value="1"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="a" value="2"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="a" value="3"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="a" value="4"&gt;&lt;br&gt;
  </code></pre>
  
  <p><strong>SET B</strong></p>
  
  <pre><code>&lt;input type="radio" name="item[]" class="b" value="5"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="b" value="6"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="b" value="7"&gt;&lt;br&gt;
  &lt;input type="radio" name="item[]" class="b" value="8"&gt;&lt;br&gt;
  </code></pre>