title: Multiple checkboxes, comma separated get request?
body: <p>I have this form with get set as method.</p>
  
  <pre><code>&lt;form method="get" action="index.html"&gt;
      &lt;input type="checkbox" name="item" value="1" /&gt;
      &lt;input type="checkbox" name="item" value="2" /&gt;
      &lt;input type="submit" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>When I submit, i end up with the url 
  index.html?item=1&amp;item=2</p>
  
  <p>I wonder if it is possible to make a more neat format like comma-seperation, for instance
  index.html?item=1,2</p>
  
  <p>I have been searching for a while, but I cannot find how to obtain this. Do I really need to implement this with javascript?</p>