JSFiddle - React, Tailwind, and code Playground

HTML

<table class="myTable">
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
    </tr>
    <tr>
        <td>4</td>
        <td>5</td>
        <td>6</td>
    </tr>
</table>

CSS

table.myTable {
    margin: 50px;
}
table.myTable td {
    border: 1px solid;
    padding: 10px;
}
td.red {
    color: red;
}

JavaScript

$('.myTable').on('click', 'tr', 
                 function() {
                             $('td', this).addClass('red');
                            });