需求：定义一个组件，设置title属性必须是字符串
学习：组件属性验证propTypes
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>react dome
</title>
<script src="./build/react.js"></script>
<script src="./build/react-dom.js"></script>
<script src="./build/browser.min.js"></script>
</head>
<body>
<div id="container"></div>
<script type="text/babel">
var ShowTitle = React.createClass({
propTypes:{
title:React.PropTypes.string.isRequired,
},
render:function(){
return <h1>{this.props.title}</h1>
}
})
//渲染
ReactDOM.render(
<ShowTitle title="我是字符串" />,
document.getElementById("container")
)
</script>
</body>
</html>
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