JSFiddle - React, Tailwind, and code Playground

by navyflower

HTML

<img 
sizes="(max-width: 600px) 100vw, 1000px"
srcset="http://i.imgur.com/YF2BCoe.png 1000w, http://i.imgur.com/aLdqQYI.png 600w"/>

JavaScript

var w = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
alert ("Viewport width: " + w + "px");