JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.1.1/css/bootstrap.min.css">
<table id="table1" class="table table-bordered">
    <tbody>
        <tr>
            <td>1</td>
            <td>Item 1</td>
        </tr>
    </tbody>
</table>
<table id="table2" class="table table-bordered">
    <tbody>
        <tr>
            <td>2</td>
            <td>Item 2</td>
        </tr>
        <tr>
            <td>3</td>
            <td>Item 3</td>
        </tr>
        <tr>
            <td>4</td>
            <td>Item 4</td>
        </tr>
    </tbody>
</table>
<button class="btn">Move</button>

JavaScript

$('button').click(function(){
    $('#table1 tbody').append($('#table1 tbody tr')[1].clone());
})