js :
function AddRow()
{
$('#myTable').append('<tr><td>test 2</td></tr>')
}
html
<table id="myTable">
<tbody >
<tr>
<td>
test
</td>
</tr>
</tbody>
</table>
source : http://stackoverflow.com/questions/2160890/how-do-you-append-rows-to-a-table-using-jquery