react第一个小测试代码

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8" />
    <title>菜鸟教程 React 实例</title>
     <script src="https://static.runcodex.com/assets/react/react-0.14.7/build/react.min.js"></script>
    <script src="https://static.runcodex.com/assets/react/react-0.14.7/build/react-dom.min.js"></script>
    <script src="https://static.runcodex.com/assets/react/browser.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
    var MessageBox = React.createClass({
        render: function(){
            return ( <h1>你好，世界！</h1> )
        }
    });
    ReactDOM.render(
        <MessageBox />,
        document.getElementById('app'),
        function(){
            console.log('测试代码！')
        }
    )
</script>
</body>
</html>
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