<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<title>Vue自学：登录切换的小案例</title>
</head>
<body>
<div id="app">
<span id="yonghu" v-if="is_show">
<label for="">用户名登录</label>
<input type="text" name="" id="" value="" placeholder="请输入用户名"/>
</span>
<span id="youxiang" v-else>
<label for="">邮箱登录</label>
<input type="text" name="" id="" value="" placeholder="请输入邮箱"/>
</span>
<button type="button" v-on:click="power">切换类型</button>
</div>
</body>
<script type="text/javascript">
const vm = new Vue({
el:’#app’,
data:{
is_show:’true’,
},
methods:{
power(){
this.is_show = !this.is_show
}
}
})
</script>
</html>
