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 sym = Symbol()
const Hello = (props) => {
 return <div>Hello, {props[sym] || props._[sym]}</div>;
}

ReactDOM.render(
  React.createElement(Hello, {[sym]: 'symbol', _: {[sym]: 'wrapped symbol'}}),
  document.getElementById('container')
);