一、程序步骤
1.用React.createClass生成组件
2.调用React.render把组件渲染到页面中，dom的操作由react自动完成
二、代码
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script src="./react-0.13.2/build/react.js"></script>
<script src="./react-0.13.2/build/JSXTransformer.js"></script>
<script type="text/jsx">
var HelloWorld = React.createClass({
render: function(){
return <p>你好React</p>;
}
});
React.render(<HelloWorld></HelloWorld>, document.body);
</script>
</body>
</html>
运行结果：
运行后的源代码：
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script>
var HelloWorld = React.createClass({
displayName: "HelloWorld",
render: function() {
return React.createElement("p", null, "你好React");
}
});
React.render(React.createElement(HelloWorld, null), document.body);
//# sourceMappingURL=data:application/json;base64,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
</script>
</head>
<body>
<p data-reactid=".0">你好React</p>
</body>
</html>
原文：http://www.cnblogs.com/shamgod/p/5049710.html