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-15.0.1.js"></script>
<script src="https://fb.me/react-dom-15.0.1.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({
  getInitialState: function() {
  	return {
    	value: 'A'
    }
  },
  render: function() {
    return <div>
    	<input type="radio" value="A" name="x" checked={this.state.value === 'A'} onChange={() => this.setState({value: 'A'})} />
      <input type="radio" value="B" name="x" checked={this.state.value === 'B'} onChange={() => this.setState({value: 'B'})} />
      <input type="radio" value="C" name="x" checked={this.state.value === 'C'} onChange={() => this.setState({value: 'C'})} />
    </div>;
  }
});

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