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2024-09-27 02:06:13 +08:00
commit 852d94fbb9
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--- a/历届学生/18课程/class18_2/课程/2021-01-07/component.html
+++ b/历届学生/18课程/class18_2/课程/2021-01-07/component.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>component</title>
+</head>
+<body>
+    <div class="app">
+        <about ref="about" title="我是" @setdata="getdata" @getfather="getd"></about>
+        <love_p :test="geiLove"></love_p>
+    </div>
+</body>
+<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
+<script>
+    // 全局组件
+    // 局部组件
+
+    // 父组件 -> 子组件 传递数据 props
+    // 子组件 -> 父组件 传递数据 $emit提交一个事件，可以携带数据
+
+    // 全局组件
+    Vue.component('love_p', {
+        props: ['test'],
+        template: `
+          <div>
+             <h2>{{title}}</h2>
+             <p>{{ test }}</p>
+          </div>
+        `,
+        data() {
+            return {
+                title: '组件 love_p'
+            }
+        },
+        methods: {
+
+        }
+    });
+
+    // 局部组件
+    var about = {
+        // props: ['title'],
+        props: {
+            title: {
+                type: String,
+                default: '默认数值',
+                validator: function(val) {
+                    return val.length < 3;
+                }
+            }
+        },
+        template: `
+            <div>
+                <div>{{title | checkTitle}}</div>
+                <h1 @click="hello">哈哈哈哈</h1>
+            </div>
+        `,
+        filters: {
+            checkTitle(res) {
+                return res + ' - 过滤后的数据';
+            }
+        },
+        data() {
+            return {
+                goLoveP: "我是需要给love_p的数据"
+            }
+        },
+        created() {
+            this.$emit("getfather", this.goLoveP);
+        },
+        mounted() {
+            console.log(this.$parent.$children[1].title = "偷偷修改lovep");
+        },
+        methods: {
+            ceshi() {
+                console.log("被父亲调用");
+            },
+            hello() {
+                this.$emit('setdata','子组件数据')
+            }
+        }
+    };
+
+    new Vue({
+        el: '.app',
+        data: {
+            geiLove: ""
+        },
+        mounted() {
+            this.$refs.about.ceshi()
+        },
+        methods: {
+            getd(val) {
+                console.log("val ===== ",val);
+                this.geiLove = val;
+            },
+            getdata(res) {
+                console.log(res);
+            }
+        },
+        components: {
+            // 'lb_about': about
+            about
+        }
+    })
+
+</script>
+</html>