JSFiddle - React, Tailwind, and code Playground

HTML

<div id="dude"></div>
<a id="clickme" href="#">Click Me</a>

CSS

#dude {
    width: 275px;
    height: 95px;
    background: url("http://www.google.ca/images/srpr/logo3w.png") left top no-repeat;
}

JavaScript

YUI().use("node", function(Y) {
    var YAHOO = "url(\"http://l.yimg.com/a/i/ww/met/logo/20100909/yahoo_logo_ca.png\")";
    
    var page = {
        init: function() {
            Y.one("#clickme").on("click", function(e) {
                e.preventDefault();
                Y.one("#dude").setStyle("backgroundImage", YAHOO);
            });
        }
    };
                                 
    Y.on("domready", page.init, page);             
});