53.在页面中使用render函数渲染组件.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <script src="./lib/vue.js"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>

    <div id="app">
        <p>啦啦啦</p>
        <login>

        </login>
    </div>

    <script>
        var login = {
            template: '<h1>登陆</h1>'
        }
        var register = {
            template: '<h1>注册</h1>'
        }
        var vm = new Vue({
            el: '#app',

            data: {

            },

            methods: {

            },

            render:function(createElements){  // createElements是一个方法，调用它能够把指定的组件模板渲染为html结构
                return createElements(login)
                // 注意这里return的结构会替换页面中el指定的哪个容器
            }
        })
    </script>
</body>

</html>