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://npmcdn.com/react@latest/dist/react-with-addons.js"></script>
<script src="https://npmcdn.com/react-dom@latest/dist/react-dom.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

const Hello = React.createClass({
  getInitialState: function(){
  	return {
    	value: null
    }
  },
  render: function() {
    return (
    	<div onChange={e => {this.setState({value: e.target.value});console.log(e.target)}}>
      	<label><input name='aaa' type='radio' value='1' checked={this.state.value === '1'}/> value 1</label><br/>
      	<label><input name='aaa' type='radio' value='2' checked={this.state.value === '2'}/> value 2</label><br/>
      	<label><input name='aaa' type='radio' value='3' checked={this.state.value === '3'}/> value 3</label><br/>
      	<label><input name='aaa' type='radio' value='4' checked={this.state.value === '4'}/> value 4</label><br/>
	    </div>
    );
  }
});

ReactDOM.render(
  <Hello name="World" />,
  document.getElementById('container')
);