JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div">
<button id="button">
Find Height
</button>
</div>

CSS

.div {
  width:300px;
  height:1000px;
  background-color:yellow;
}

JavaScript

$("#button").click(function() {

	alert(  "Viewport Height: " + $(window).height() + " Height of div: " + $(".div").height()  );
  
});