JSFiddle - React, Tailwind, and code Playground

HTML

<table id="table1">
    <tr><td>1</td></tr>
    <tr><td>2</td></tr>
    <tr><td>3</td></tr>
    <tr><td>4</td></tr>
    <tr><td>5</td></tr>
</table>

<table id="table2">
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
</table>

<table id="table3">
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
    <tr><td>test</td></tr>
</table>

JavaScript

$('#table1 tr:last').prev().css("border", "1px solid red");
console.log($('#table1 tr:last').prev().val());
$('#table2 tr').eq($('#table tr').length - 2).css("border", "1px solid red");

$('#table3 tr').eq(-2).css("border", "1px solid red");