<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="./vue.js"></script>
</head>
<body>
<div id="app">
<ul>
<li @click="which='shouye'">首页</li>
<li @click="which='gouwu'">购物</li>
<li @click="which='fukuan'">付款</li>
</ul>
<!-- keep-alive 是保留状态，避免重新渲染 -->
<keep-alive>
<!-- 动态地绑定多个组件到它的 is 属性 -->
<component :is="which"></component>
</keep-alive>
</div>
</body>
<script>
const app = Vue.createApp({
data () {
return {
which:'shouye'
}
},
components: {
shouye:{
template:`
<h1>首页</h1>
`
},
gouwu:{
template:`
<h1>购物</h1>
<input type="text" name="" id="">
`
},
fukuan:{
template:`
<h1>付款</h1>
`
},
}
}).mount("#app")
</script>
</html>
