JSFiddle - React, Tailwind, and code Playground
HTML
<div id="imageDescription">The filename will appear here</div>
<div ><img id="imageChanger" src="http://lorempixel.com/50/50/cats/6" width="900" height="300"></div>JavaScript
$(window).resize(function() {
var viewportWidth = $(window).width();
console.log(viewportWidth);
$("#imageChanger").attr("src", viewportWidth + ".jpg");
$("#imageDescription").html(viewportWidth + ".jpg");
});