title: How to retrieve checkboxes values in jQuery
body: <p>How to use <a href="http://en.wikipedia.org/wiki/JQuery" rel="noreferrer">jQuery</a> to get the checked checkboxes values, and put it into a textarea immediately?</p>
  
  <p>Just like this code:</p>
  
  <pre><code>&lt;html&gt;
    &lt;head&gt;
    &lt;/head&gt;
  
    &lt;body&gt;
      &lt;div id="c_b"&gt;
        &lt;input type="checkbox" value="one_name" checked&gt;
        &lt;input type="checkbox" value="one_name1"&gt;
        &lt;input type="checkbox" value="one_name2"&gt;
      &lt;/div&gt;  
  
      &lt;textarea id="t"&gt;&lt;/textarea&gt;
    &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>If the <code>id="c_d"</code> is updated by <a href="http://en.wikipedia.org/wiki/Ajax_%28programming%29" rel="noreferrer">Ajax</a>, the below of altCognito's code doesn't work. Is there any good solution?</p>