JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fb.me/react-with-addons-0.12.0.js"></script>
<script src="http://fb.me/JSXTransformer-0.12.0.js"></script>
<script src="http://fb.me/react-js-fiddle-integration.js"></script>

JavaScript 1.7

var InputNumber = React.createClass({
    getInitialState: function() {
        return {currentNumber: null};
    },
    render: function() {
        return <div>
                 <input onChange={this.onChange}></input>
                 <div>{this.state.currentNumber}</div>
               </div>;
    },
    
    onChange: function(e) {
        this.setState({currentNumber: e.target.value});
    }
});
 
React.render(<InputNumber />, document.body);