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>
<script src="//cdnjs.cloudflare.com/ajax/libs/immutable/3.7.4/immutable.min.js"></script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

JavaScript 1.7

var store = Immutable.fromJS({
  'buy-milk': { id: 'buy-milk', text: 'Buy milk', completed: true },
  'finish-app': { id: 'finish-app', text: 'Finish the app', completed: false },
});

var globalContext = { hello: 'world' };

var TodoItem = React.createClass({
  contextTypes: {
    globalContext: React.PropTypes.object,
  },

  render: function() {
    return <li onClick={this._clickHandler}>({this.props.todo.get('text')})</li>;
  },
  
  _clickHandler: function() {
    // this gives an error because context was not passed correctly
    console.log('globalContext', this.context.globalContext);
  },
});

const TodoApp = React.createClass({
  propTypes: {
    store: React.PropTypes.object,
  },

  childContextTypes: {
    globalContext: React.PropTypes.object,
  },

  getChildContext() {
    return { globalContext: globalContext };
  },

  render() {
    var listItems = this.props.store.valueSeq().
      map((todo) => <TodoItem key={todo.get('id')} todo={todo} />);
    return (
        <ul>{listItems}</ul>
    );
  },
});
 
React.render(<TodoApp store={store} />, document.getElementById('container'));