<table>
    <thead></thead>
    <tbody>
           <tr>
                  <td>
                        <a class="class_v" />
                        <img src="">
                  </td>
           </tr>
           <tr>
                  <td>
                        <a class="class_v" />
                        <img src="">
                  </td>
           </tr>
           <tr>
                  <td>
                        <a class="class_v" />
                        <img src="">
                  </td>
           </tr>
    </tbody>
</table> 
  
  $('.class_v').each(function () {
  $(this).closest('tr').append('<td>Foo</td>');
})