JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Warrior Forum</h1>
<table>
    <tr>
        <td>12</td>
        <td>13</td>
    </tr>
    <tr>
        <td>26</td>
        <td>20</td>
    </tr>
</table>

<input name="var" id="newvar">

CSS

td {
    border: 1px solid red;
    padding: 1px 9px;
}
input {
    margin: 30px 15px;
}

JavaScript

$('td').click(function() {
   tdval = $(this).html();
   $('#newvar').val(tdval);
    alert('Value changed to: '+tdval);
});