JSFiddle - React, Tailwind, and code Playground
by inDiscover
HTML
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="bkup_docs">
<tr>
<td align="right"></td>
</tr>
<tr>
<td> </td>
</tr>
</div>
JavaScript
$(function() {
var addDiv = $('#bkup_docs');
var i = $('#bkup_docs').find('tr').length+ 1;
alert(i);
});