JSFiddle - React, Tailwind, and code Playground

by beej

HTML

<html>
    <body>
        Hello World<p>
        Window width = <span id="widthSpan"></div>
        </body>
</html>

JavaScript

document.getElementById('widthSpan').innerHTML = window.outerWidth;
window.onresize = function() {
    document.getElementById('widthSpan').innerHTML = window.outerWidth;
}