JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fb.me/JSXTransformer-0.5.1.js"></script>
<script src="http://fb.me/react-with-addons-0.5.1.js"></script>
<script src="http://fb.me/react-js-fiddle-integration.js"></script>

JavaScript 1.7

/** @jsx React.DOM */

var World = React.createClass({
    render: function() {
        return <strong>{this.props.name}</strong>;
    }
});

var Hello = React.createClass({
    clickHandler: function() {
        this.setProps({ name: 'earth' });
    },
    render: function() {
        return (
            <div>
                Hello <World name={this.props.name} />
                <button onClick={this.clickHandler}>Click me</button>
            </div>
        );
    }
});

React.renderComponent(<Hello name="world" />, document.body);