JSFiddle - React, Tailwind, and code Playground

HTML

<table>
	<tr>
		<th>Name</th>
		<th>Country</th>
		<th>Age</th>
	</tr>
	<tr>
        <td><input type="text"/></td>
        <td><input type="text"/></td>
        <td><input type="text"/></td>
	</tr>
</table>

<button>Add a row</button>

<table>
	<tr>
		<th>Meal</th>
		<th>Price</th>
	</tr>
	<tr>
        <td><input type="text"/></td>
        <td><input type="text"/></td>
	</tr>
</table>

<button>Add a row</button>

JavaScript

$('button').click(function(){
    var table = $(this).prev('table');
    var lastrow = $('tr:last-child', table).html();
    table.append('<tr>' + lastrow + '</tr>');
});