40.ref获取DOM元素和组件.html

<!DOCTYPE html>
<html lang="en">
<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="./lib/vue.js"></script>
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="button" value="获取元素" @click="getElement">
        <h3 ref='myh3'>
            哈哈哈  拉拉    
        </h3>
        <login ref="myLogin">

        </login>
    </div>
    <script>
        var login = {
            template: '<h1> 登陆组件 </h1>',
            data(){
                return {
                    msg: 'template msg'
                }
            },
            methods: {
                show(){
                    console.log('调用了子组件的方法')
                }
            },
        }
        var vm = new Vue({
            el: '#app',
            data: {

            },
            methods: {
                getElement(){
                    console.log(this.$refs.myh3.innerText)
                    console.log(this.$refs.myLogin.msg)
                    this.$refs.myLogin.show()
                }
            },
            components:{
                login
            }

        })
    </script>
</body>
</html>