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 counter = 0;
const Hello = React.createClass({
		getInitialState: function() {
    	return {button: "click me", list: ""}
  	},
    myClick: function () {
    		counter++;
        this.setState({
        	button: "loading...",
          list: ""
       	})
        setTimeout(() => {
        	const arr = Array(parseInt(Math.random() * 10)).fill(0).map((e,idx) => {return <li>line {idx}</li>})
        	this.setState({
        		button: "click me " + counter,
          	list: arr
       		})
        }, 1000); // simulate network request
    },
    render: function() {
        return <div><button onClick={this.myClick}>
                   {this.state.button}
                </button>
               <ul>{this.state.list}</ul></div>
    }
});

React.render(<Hello />, document.getElementById('container'));