JSFiddle - React, Tailwind, and code Playground

HTML

<div class="one"></div>

CSS

body {margin:0;}
.one {
  width:100%;
  height:600px;
  background-color:red;
}

JavaScript

function show(e) {
	console.log(e.clientX + " " + e.clientY);
	console.log(e.currentTarget.width + " " + e.currentTarget.height);
	console.log(e.currentTarget.nodeName);
}
window.addEventListener("click", show);