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>

CSS

img:hover {
  opacity: 0.5;
}

JavaScript 1.7

var Hello = React.createClass({
  render: function() {
    return (
        <img src={this.props.src} width="400" height="400"/>
    )
  }
});

ReactDOM.render(
  <Hello src="https://scontent.cdninstagram.com/hphotos-xap1/t51.2885-15/e35/12552326_495932673919321_1443393332_n.jpg" />,
  document.getElementById('container')
);