<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
	</head>
	<body>
		<div id="app">
			<h3 v-show="tab==1">首页 </h3>
			<h3 v-show="tab==2">新闻页</h3>
			<h3 v-show="tab==3">个人页</h3>
			
			
			<button @click="tabChange" data-id="1">首页</button>
			<button @click="tabChange" data-id="2">新闻页</button>
			<button @click="tabChange" data-id="3">个人页</button>
		</div>
		<script type="text/javascript">
			let app = new Vue({
				el:"#app",
				data:{
					tab:1
				},
				methods:{
					tabChange:function(e){
						let tabid = e.target.dataset.id
						this.tab = tabid
					}
				}
			})
		</script> 
	</body>
</html>

写这个要记得下载vue.js

在这里插入图片描述

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