JSFiddle - React, Tailwind, and code Playground

HTML

<table id="foo">
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    <tr>
        <td>cell</td><td>cell</td><td>cell</td><td>cell</td>
    </tr>
    </table>

JavaScript

$('tr').click(function(){
 alert($('#foo tr').index($(this)))})