JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<table>
   <caption>Table caption</caption>
   <thead>
   <tr><th scope="col">Table header 1</th><th scope="col">Table header 2</th><th scope="col">Table header 3</th><th scope="col">Table header 3</th></tr>
   </thead>
   <tbody>

        <tr><th scope="row">Table row header</th><td>Table data</td><td>Table data</td><td>Table data</td></tr>
        <tr><th scope="row">Table row header</th><td>Table data</td><td>Table data</td><td>Table data</td></tr>
        <tr><th scope="row">Table row header</th><td>Table data</td><td>Table data</td><td>Table data</td></tr>

        <tr><th scope="row">Table row header</th><td>Table data</td><td>Table data</td><td>Table data</td></tr>
   </tbody>
</table>

JavaScript

$('table tr :nth-child(2n)').css('background-color', '#eee');