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

JavaScript 1.7

var Hello = React.createClass({

  getInitialState: function() {
    return {
      view: "home",
      viewItemId: "",
      showMenu: false,
      loggedIn: false,
      userId: "",
      viewUserId: "",
    };
  },
  
    checkAuthentication: function( cb ) {

      this.setState({
        loggedIn: true,
        userId: 3243,
      }, function(){

        if (cb && (typeof cb == "function")) {
          cb();
          console.log("wtr");
        }

      });

  },

  
    componentDidMount: function() {
    	this.checkAuthentication( function() {
          this.setState({
            view: "user",
            viewUserId: 54234,
          });
        }).bind(this);
     },

    render: function() {
        return <div>Hello {this.state.viewUserId}</div>;
    }
});
 
React.render(<Hello name="World" />, document.getElementById('container'));