JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="navi" >
    <li>test1</li>
    <li>Test2</li>
    <li>test3</li>
    <li>Test4</li>
</ul>

CSS

.selected{color:red;}

JavaScript

$(document).ready(function() {
    $("#navi li").hover(function() {
        $(this).addClass('selected');
    }, function() {

    });
});