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-15.2.0.js"></script>
<script src="https://fb.me/react-dom-15.2.0.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 P = React.createClass({
  render: function() {      
    return <div>Parent<br/>
    {React.Children.map(this.props.children, (element, idx) => {
        return React.cloneElement(element, { ref: idx });
    })}
    </div>;
  },

  componentDidMount: function(prevProps, prevState) {
    ReactDOM.findDOMNode(this.refs[0]).style.backgroundColor="green";
    ReactDOM.findDOMNode(this.refs[1]).style.backgroundColor="blue";
    ReactDOM.findDOMNode(this.refs[2]).style.backgroundColor="red";
  }
});

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

ReactDOM.render(
  <P>
  <C text="a"/>
  <C text="b"/>
  <C text="c"/>
  </P>,
  document.getElementById('container')
);