JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td>a cell</td>
        <td>another cell</td>
    </tr>
    <tr rowspan="2">
        <td >another row</td>
    </tr>
</table>

SCSS

.yellow {
    background-color: red;
}
td {
    border: 1px solid #000;
    padding: 3px;
}

JavaScript 1.7

$(function () {
    $('td').bind('click', function () {
        $(this).closest('tr').addClass('yellow');
    });
});