From 3e9b23998f4ec39630f89a87d995b5c9868c5b58 Mon Sep 17 00:00:00 2001
From: panyue <90938238g@gmail.com>
Date: Thu, 14 Oct 2021 00:00:29 +0800
Subject: [PATCH] =?UTF-8?q?vue3=E4=B8=AD=E7=9A=84readOnly=E5=92=8CshallowR?=
 =?UTF-8?q?eadOnly?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../App.vue"                                  | 31 ++++++++++++
 .../components/Demo.vue"                      | 48 +++++++++++++++++++
 .../main.js"                                  | 20 ++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 "15_src_readOnly\345\222\214shallowReadOnly/App.vue"
 create mode 100644 "15_src_readOnly\345\222\214shallowReadOnly/components/Demo.vue"
 create mode 100644 "15_src_readOnly\345\222\214shallowReadOnly/main.js"

diff --git "a/15_src_readOnly\345\222\214shallowReadOnly/App.vue" "b/15_src_readOnly\345\222\214shallowReadOnly/App.vue"
new file mode 100644
index 0000000..f7c99aa
--- /dev/null
+++ "b/15_src_readOnly\345\222\214shallowReadOnly/App.vue"
@@ -0,0 +1,31 @@
+<template>
+  <!--vue3的组件模版结构可以没有根标签-->
+  <button @click="isShowDemo = !isShowDemo">{{ isShowDemo ? '隐藏' : '显示'}}</button>
+  <Demo v-if="isShowDemo"/>
+</template>
+
+<script>
+import Demo from "./components/Demo";
+import { ref } from "vue";
+export default {
+  name: 'App',
+  components: {Demo},
+  setup(){
+    let isShowDemo = ref(true);
+    return {
+      isShowDemo
+    }
+  }
+}
+</script>
+
+<style>
+#app {
+  font-family: Avenir, Helvetica, Arial, sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-align: center;
+  color: #2c3e50;
+  margin-top: 60px;
+}
+</style>
diff --git "a/15_src_readOnly\345\222\214shallowReadOnly/components/Demo.vue" "b/15_src_readOnly\345\222\214shallowReadOnly/components/Demo.vue"
new file mode 100644
index 0000000..ddfdfc5
--- /dev/null
+++ "b/15_src_readOnly\345\222\214shallowReadOnly/components/Demo.vue"
@@ -0,0 +1,48 @@
+<template>
+  <h2>当前求和为:{{ sum }}</h2>
+  <button @click="sum++">sum+1</button>
+  <hr/>
+  <h2>姓名:{{ name }}</h2>
+  <h2>年龄:{{ age }}</h2>
+  <h2>薪资:{{ job.j1.salary }}K</h2>
+  <button @click="name = name + '~'">修改姓名</button>
+  <button @click="age++">增长年龄</button>
+  <button @click="job.j1.salary++">增长薪资</button>
+</template>
+
+<script>
+import {ref,reactive, toRefs, readonly, shallowReadonly} from 'vue';
+export default {
+  name: 'Demo',
+  setup(){
+
+    let sum = ref(0);
+
+    let person = reactive({
+      name: '张三',
+      age: 18,
+      job:{
+        j1:{
+          salary: 20
+        }
+      }
+    });
+
+    // person = readonly(person); //此时person里面的属性值都不允许修改
+    //person = shallowReadonly(person); //第一层不能改(name,age), 但j1和salary仍然可以改动
+
+    // sum = readonly(sum); //同理
+    // sum = shallowReadonly(sum)
+
+    return {
+      sum,
+      ...toRefs(person),
+    };
+
+  }
+}
+</script>
+
+<style>
+</style>
+
diff --git "a/15_src_readOnly\345\222\214shallowReadOnly/main.js" "b/15_src_readOnly\345\222\214shallowReadOnly/main.js"
new file mode 100644
index 0000000..f97c3a7
--- /dev/null
+++ "b/15_src_readOnly\345\222\214shallowReadOnly/main.js"
@@ -0,0 +1,20 @@
+//引入不再是Vue构造函数了，引入的是一个名为createApp的工厂函数
+//注意在这里无法像vue2那样去书写了，(这里并不兼容)
+import { createApp } from 'vue'
+import App from './App.vue'
+
+//创建应用实例对象---app类似于vue2中vm,但app比vm更轻
+const app = createApp(App);
+// console.log(app);
+//挂载
+app.mount('#app');
+
+// setTimeout(() => {
+//     app.unmount("#app");
+// },2000)
+
+// //vue2写法
+// const vm = new Vue({
+//     render: h=> h(App)
+// });
+// vm.$mount('#app')