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-15.0.0-rc.2.js"></script>
<script src="https://fb.me/react-dom-15.0.0-rc.2.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() {
    console.log(this.state.value);
    return (
    	<input
      	ref="in"
		    type='radio'
    		value='2'
        checked={this.state.value === '1'}
        onChange={this.onChange}
			/>
		);
  },
  
  onChange: function (e) {
    this.setState({value: e.target.value});
	},
  
  getInitialState: function() {
    return {value: '1'};
	},
  componentDidMount: function() {
 	  console.log(this.refs.in.hasAttribute('checked'))
  	console.log(this.refs.in.checked);
  },
  componentDidUpdate: function() {
	  console.log(this.refs.in.hasAttribute('checked'))
	  console.log(this.refs.in.checked)
  }
});

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