JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="list3">
    <li>1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
</ul>

CSS

.clicked {
    border: 3px solid red;
}

JavaScript

$(document).ready(function () {
        $("#list3 li").click(function () {
            $("#list3 li").removeClass('clicked');
            $(this).addClass('clicked');

        });
  });