JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.8.4/dijit/themes/claro/claro.css">
<div id="btn4"></div>

JavaScript

require(["dojo/parser", "dijit/layout/BorderContainer",
"dijit/form/Button","dojo/on","dijit/form/Select",
"dojo/store/Memory", "dojo/request","dojo/domReady!"
],
function(parser, BorderContainer, Button, on, Select, Memory, request)
{
var btn4 = new Button // Button, not button
({
    label: "Number of cards",
    disabled: true,
    },"btn4"); 
btn4.startup();
});