<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>结构渲染key属性</title>
</head>
<body>
    <div id="app">
        <div v-if="loginByPhone">
            <label for="">手机号登陆</label>
            <input type="text" placeholder="请输入手机号">
        </div>
        <div v-else>
            <lable>邮箱登陆</lable>
            <input type="text" placeholder="请输入邮箱">
        </div>
        <button v-on:click="loginByPhone = !loginByPhone">更换登录方式</button>
    </div>

    <script src="../js/vue.js"></script>

    <script>
        let vm = new Vue({
            el:'#app',
            data:{
                loginByPhone:true
            }
        });

    </script>
</body>
</html>