JSFiddle - React, Tailwind, and code Playground
by chauhangs
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<input type="button" id="addmore" value="Add More" onclick="insertRow()" />
<br/>
<br/>
<table id="ttable" border="1">
<tr>
<td>1</td>
<td>Name :
<input size=25 type="text" id="testId" />
</td>
</tr>
</table>
JavaScript
function insertRow() {
var x = document.getElementById('ttable');
var new_row = x.rows[0].cloneNode(true);
var len = x.rows.length;
new_row.cells[0].innerHTML = len;
var inp1 = new_row.cells[1].getElementsByTagName('input')[0];
inp1.id += len;
inp1.value = '';
x.appendChild(new_row);
}