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-0.14.6.js"></script>
<script src="https://fb.me/react-dom-0.14.6.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() {
  	return (
    <svg>
		  <defs>
    		<g id="shape">
		        <rect x="50" y="50" width="50" height="50" />
      		  <circle cx="50" cy="50" r="50" />
			    </g>
			  </defs>

			  <use xlinkHref="#shape" x="50" y="50" />
		  	<use xlinkHref="#shape" x="200" y="50" />
			</svg>
    )
  }
});

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