JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<form id="form1" name="form1" method="post" action="">
    <table width="100%" border="1" cellspacing="0" cellpadding="0" id="mans">
        <tr>
            <td>Description
                <label for="Description"></label>
                <input type="text" name="11" id="11" />
            </td>
            <td>12
                <label for="12"></label>
                <input type="text" name="12" id="12" />
            </td>
            <td>13
                <label for="13"></label>
                <input type="text" name="13" id="13" />
            </td>
            <td><a href="#">del</a>

            </td>
        </tr>
    </table>
</form>
<button type="button" id="addTableRow">add row</button>

JavaScript

$(function () {
    $('table').on('click', 'tr a', function (e) {
        e.preventDefault();
        $(this).parents('tr').remove();
    });
    
    $("#addTableRow").click(function() {
        $("#mans").each(function () {
            var tds = '<tr>';
            jQuery.each($('tr:last td', this), function () {
                tds += '<td>' + $(this).html() + '</td>';
            });
            tds += '</tr>';
            if ($('tbody', this).length > 0) {
                $('tbody', this).append(tds);
            } else {
                $(this).append(tds);
            }
        });
    });
});