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

var Hello = React.createClass({
  getInitialState: function() {
     return { text: "not focused" };
  },
	setFocusText: function() {
    this.setState({ text: "focused" })
  },
  setFocus: function () {
  	this.refs.component.focus();
  },
  render: function() {
    return <div><div onClick={this.setFocus}>focus elem</div><div ref="component" tabIndex="1" onFocus={this.setFocusText}>{this.state.text}</div></div>;
  }
});

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