JSFiddle - React, Tailwind, and code Playground

HTML

<table border="1">
<tr><td> Index value 0</td></tr>
<tr><td> Index value 1</td></tr>
<tr><td> Index value 2</td></tr>
<tr><td> Index value 3</td></tr>
<tr><td> Index value 4</td></tr>
<tr><td> Index value 5</td></tr>
<tr><td> Index value 6</td></tr>

</table>
<button id="btn">Click to see the effect</button>

JavaScript

$('#btn').click(function(){ 
$( "tr:even" ).css( "background", "grey" );
});