<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>');
})