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://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.3/react-with-addons.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration.js"></script>

JavaScript 1.7

var MySelect = React.createClass({
     getInitialState: function() {
         return {
             value: 'Select one'
         }
     },
     change: function(event){
         this.setState({value: event.target.value});
     },
     render: function(){
        return(
           <div>
               <select id="lang" onChange={this.change} value={this.state.value}>
                  <option value="Select">Select</option>
                  <option value="HP">HP</option>
                  <option value="Dell">Dell</option>
                  <option value="Asus">Asus</option>
               </select>
               <p></p>
               <p>{this.state.value}</p>
           </div>
        );
     }
});

React.render(<MySelect />, document.body);