title: Get a list of all checked checkboxes
body: <p>I would like to figure out which checkboxes are checked and so I tried this code:</p>
  
  <pre><code>$('.feature input[type="checkbox"').serialize();
  </code></pre>
  
  <p>This is how my HTML looks like:</p>
  
  <pre><code>&lt;div class="feature"&gt;
    &lt;h2&gt;Features&lt;/h2&gt;
    &lt;label&gt;&lt;input class="custom_css" checked="" type="checkbox" name="feature[]"&gt; Custom CSS (style.css)&lt;/label&gt;
    &lt;label&gt;&lt;input class="custom_js" checked="" type="checkbox" name="feature[]"&gt; Custom Javascript (script.js)&lt;/label&gt;
    &lt;label&gt;&lt;input class="modernizr" type="checkbox" name="feature[]"&gt; Modernizr&lt;/label&gt;
    &lt;label&gt;&lt;input class="google_maps" type="checkbox" name="feature[]"&gt; Google Maps&lt;/label&gt;
    &lt;label&gt;&lt;input class="custom_api" type="checkbox" name="feature[]"&gt; Custom API&lt;/label&gt;
    &lt;label&gt;&lt;input class="font_awesome" type="checkbox" name="feature[]"&gt; Font Awesome&lt;/label&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>And this is the output that I get:</p>
  
  <blockquote>
    <p>array(1) { ["var_sent_via_ajax"]=> string(67)
    "feature%5B%5D=on&amp;feature%5B%5D=on&amp;feature%5B%5D=on&amp;feature%5B%5D=on"
    }</p>
  </blockquote>
  
  <p>Now how can I know which of them has been checked? And what do the signs <em>%5B%5D</em> mean?</p>