React获取DOM节点

1、问题背景

利用React获取DOM节点，需要利用ref属性

2、实现源码

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>React获取DOM节点</title>
		<script type="text/javascript" src="../js/react.js" ></script>
		<script type="text/javascript" src="../js/react-dom.js" ></script>
		<script type="text/javascript" src="../js/browser.min.js" ></script>
		<script type="text/babel">
			var Cat = React.createClass({
				cutClick:function(){
					this.refs.person.focus();
				},
				render:function(){
					return (
						<div>
							<input type="text" ref="person" />
							<input type="button" value="查询" οnclick="{this.cutClick}" />
						</div>
					)
				}
			});
			
			ReactDOM.render(
				<Cat />,
				document.getElementById("catQuery")
			);
		</script>
	</head>
	<body>
		<div id="catQuery"></div>
	</body>
</html>

3、实现结果