JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  hello
</div>

CSS

body {
  background: pink;
  height: 200vh;
}

div {
  height: 200vh;
  position: fixed
	;
}

JavaScript

var scrollTop = 0;
$(document).ready(function() {
  $(window).on('scroll', function() {
    scrollTop = $(window).scrollTop();
  $('div').text(scrollTop)
		
  });

});