JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>Something</li>
    <li>Something</li>
    <li>Something</li>
    <li>Something</li>
    <li>Something</li>
</ul>

CSS

.clicked {
    background: #f00;
}

JavaScript

$('ul li').click(function() {
    $('ul li').each(function() {
        $(this).removeClass();
    })
    $(this).addClass('clicked');
})