JSFiddle - React, Tailwind, and code Playground

by acwong

HTML

<div id="box1"></div>

CSS

#box1 {
    position: relative;
    width: 50px;
    height: 50px;
    background-color: blue;
    top: 100px;
    left: 300px;
}

JavaScript

var box1 = document.getElementById("box1");

alert(box1.offsetLeft);
alert(box1.offsetTop);