title: get checkbox value by jquery
body: <p>there is dynamic checkbox like this :</p>
  
  <pre><code>&lt;input type="checkbox" checked="checked" value="1" name="user_mail_check[]" class="ami"&gt;
  &lt;input type="checkbox" checked="checked" value="2" name="user_mail_check[]" class="ami"&gt;
  &lt;input type="checkbox"  value="3" name="user_mail_check[]" class="ami"&gt;
  &lt;input type="checkbox" checked="checked" value="4" name="user_mail_check[]" class="ami"&gt;
  &lt;input type="checkbox"  value="5" name="user_mail_check[]" class="ami"&gt;
  </code></pre>
  
  <p>How can I get value of each checked checkbox.</p>
  
  <p>I used</p>
  
  <pre><code>$('.ami').is(":checked").value();
  </code></pre>
  
  <p>but it did not work.</p>