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/react/0.13.1/JSXTransformer.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.1/react-with-addons.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration.js"></script>

<div id="container"></div>

JavaScript 1.7

var Img = React.createClass({

    componentDidMount: function () {
    
        var self = this;
        var img = new Image();
        img.onerror = function () {
            self.setState({ src: 'http://i.imgur.com/lL3LtFD.jpg' });
        };
        
        img.src = this.state.src;
        
    },
    
    getInitialState: function () {    
      return { src: '/404.jpg' };
    },
    
    render: function () {
        return <img src={this.state.src} />;
    }
    
});
 
React.render(<Img />, document.getElementById('container'));