JSFiddle - React, Tailwind, and code Playground

HTML

<div id=a></div>

CSS

body {
  height: 10000px;
  background: linear-gradient(to bottom, red, green);
}

#a {
  position: fixed;
  top: 10px;
  left: 10px;
  width: 100px;
  height: 20px;
  line-height: 20px;
  text-align: center;
  background: white;
}

JavaScript

var counter = 0;
var a = document.getElementById('a');
a.innerHTML = 0;
document.addEventListener('wheel', function () {
  a.innerHTML = ++counter;
});