React Base Fiddle (JSX)

Starting point for creating JSFiddles with React. This uses React with Addons.

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://fb.me/react-with-addons-0.14.0.js"></script>
<script src="https://fb.me/react-dom-0.14.0.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration-babel.js"></script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

JavaScript 1.7

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

var CheckBox = React.createClass({
	getInitialState: function() {
    	return {
        	alex: 0
        };
                              
  },
    handleChange: function(event) {
    this.setState({value: event.target.value});
    this.setState({alex: 5});
  },
	render: function() {
    alert('render');
    	return (
        <div>
        	<label htmlFor="alex"> Alex </label>
   			<input type="checkbox" onChange={this.handleChange} name="alex" />
            <div>{this.state.alex}</div>
        </div>
        );
    }
});
 
ReactDOM.render(
	<Hello name="World" />,
    document.getElementById('container')
);