title: Getting values from checkbox, add them, and display the result
body: <p>I'm having some checkboxes, where all have different values but all numbers.</p>
  
  <p>I want to get the values that are checked, and then add the numbers together and then display the result in my div.</p>
  
  <pre><code>&lt;div id="pakker"&gt;
  &lt;input type="checkbox" value="39" /&gt;test 1&lt;br/&gt;
  &lt;input type="checkbox" value="79" /&gt;test 2&lt;br/&gt;
  &lt;input type="checkbox" value="29" /&gt;test 3&lt;br/&gt;
  &lt;input type="checkbox" value="49" /&gt;test 4&lt;br/&gt;
  ect
  &lt;/div&gt;
  </code></pre>
  
  <p>What I have so far is this: <code>var pakker = $('#pakker checkbox:checked').val();</code></p>
  
  <p><strong>UPDATE:</strong>
  Where i want the result: <code>&lt;h1 id="sk"&gt;0&lt;/h1&gt;</code></p>
  
  <p>But it's not really working, although I'm not getting any errors.</p>
  
  <p>Does anyone know how this can be done, as easily as possible?</p>