JSFiddle - React, Tailwind, and code Playground

HTML

<div id ="one" class="block"><a href="">one</a></div>
 <div id="thisdiv">hello</div>
<div id ="two"class="block">two</div>
<div id ="three"class="block">three</div>

CSS

.highlight { border: 1px solid red }

JavaScript

$(document).ready(function() {
    $(document).click(function(e) {
        alert(e.target);
        $("*").removeClass("highlight");
        $(e.target).addClass("highlight");
    });
});