JSFiddle - React, Tailwind, and code Playground
HTML
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
<div id="myelementid">my div</div>
CSS
body{height:3000px}
JavaScript
jQuery(window).scrollTop(100);
var el = document.querySelector("#myelementid");
var top = el.getBoundingClientRect().top;
console.log("JS Top: "+top);
console.log("JQuery Top: "+jQuery("#myelementid").offset().top);