JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fb.me/react-js-fiddle-integration.js"></script>
<script src="http://react.zpao.com/builds/master/latest/react.js"></script>
<script src="http://react.zpao.com/builds/master/latest/JSXTransformer.js"></script>

JavaScript 1.7

/** @jsx React.DOM */
var Sample = React.createClass({
  componentDidMount: function(node) {
    alert(
      'this.getDOMNode().className = "' +
      this.getDOMNode().className + 
      '"'
    );
  },
  render: function () {
    return (
      <div>bar</div>
    );
  }
});

React.renderComponent(<Sample class="bar" />, document.body);