JSFiddle - React, Tailwind, and code Playground

by daneastwell

HTML

<style>
 #elem-container{
   position: absolute;
   left:     100px;
   top:      200px;
   height:   100px;
 }
</style>

<div id="elem-container">dummy</div>
<div id="output"></div>  

<script>
  function getTheStyle(){
    var elem = document.getElementById("elem-container");
    elem.style.left = "10px";
    elem.style.top = "10px";
    var theCSSprop = window.getComputedStyle(elem,null).getPropertyValue("left");
    document.getElementById("output").innerHTML = theCSSprop;
   }
  getTheStyle();
</script>