JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr class="valid">
        <td>
            <a href="123">11001122334<a/>
        </td>
        <td>Valid</td>
        <td>Still Valid</td>
    </tr>
    <tr class="valid">
        <td>no link</td>
        <td>Valid</td>
        <td>Still Valid</td>
    </tr>
</table>

JavaScript

jQuery('tr td:first-of-type a').parent('tr').addClass('addedClass');