jQuery Simple Example
by claykaboom
HTML
<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<table>
<tr id="the_row">
<td>
<div>Some text <span class = 'my_class'></span></div>
</td>
</tr>
</table>
JavaScript
$(function() {
var $row = $('#the_row');//.find(".my_class").html("<td>null</td>");
$row.find('td').find('div').find('.my_class').text('text'); // works
$row.find('.my_class').html('Span'); // works as well
});