JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/react/0.10.0/react.js"></script>
<small>React <span id=ver></span> in <span id=browser></span></small>
<p><b>JSON serialization of an empty native DOM div:</b></p>
<pre id=njson></pre>
<p><b>JSON serialization of an empty React fake-DOM div:</b></p>
<pre id=rjson></pre>

JavaScript

var ndiv = document.createElement("div");
var rdiv = React.DOM.div();

$('#browser').text(navigator.userAgent);
$('#njson').text(json(ndiv));
$('#rjson').text(json(rdiv));
$('#ver').text(React.version);

function json(obj) {
    try {
        return JSON.stringify(obj, null, "  ");
    } catch (e) {
        return e;
    }
}