Vue-Learn
/
Vue19 rel获取DOM和组件.html

<!DOCTYPE html>
<html lang="CN">
<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">
    <title>rel 获取组件 | Vue.js</title>
    <script src="libs/js/vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="button" value="获取元素" @click="getElement" ref="mybtn">
        <h3 id="myh3" ref="myh3">今天的天气太好了！</h3>
        <login ref="mylogin"></login>
    </div>
    <script>
        var login = {
            template: "<h1>登录组件</h1>",
            data(){
                return {
                    msg: "son Component Message"
                }
            },
            methods: {
                show(){
                    console.log("调用了子组件的方法")
                }
            }
        }

        var app = new Vue({
            el: "#app",
            data: {

            },
            methods: {
                getElement() {
                    // console.log( document.getElementById("myh3").innerText )
                    // ref 是英文单词 reference 的缩写    值类型 和 引用类型 referenceError(引用错误)
                    // 组件也可用 ref 进行引用
                    // console.log(this.$refs.myh3.innerText)
                    console.log( this.$refs.mylogin.msg )
                    console.log( this.$refs.mylogin.show)
                },
            },
            components: {
                login
            }
        })
    </script>
</body>
</html>