修改

src/components/Course/myNote.vue

@@ -1,5 +1,5 @@
 <template>
-    <div class="my-note">
+    <div class="my-note" @change="handleClick">
         <div class="mynote">
             <div class="mynote-tab">
                 <div @click="notetabType(1)" :class="notetab == 1 ? 'noteactive' : ' ' "> <span>新增笔记</span> </div>
@@ -150,6 +150,12 @@ export default {
 
     },
     watch: {
+        selected:{
+      handler(val,old){
+        this.$emit('change',this.selected)
+      },
+      deep:true
+    },
         data(val){
            if(val.id) {
             console.log(val,'val');
@@ -163,6 +169,9 @@ export default {
         // }
     },
     methods: {
+        handleClick(){
+        this.$emit('change',this.selected)
+    },
         onPlayVideo(conId,time) {
             //这里应该加上内容的id
             this.$emit('onPlayVideo',conId,time);

src/views/study/coursenew.vue

@@ -140,7 +140,7 @@
             </div>
             <!-- 我的笔记 -->
             <div class="mynote" v-show="tab == 2">
-              <my-note ref="mynote" :data="courseInfo" @videoLocation="videoLocation" @onPlayVideo="onPlayVideo"
+              <my-note ref="mynote" @change="Fn1" :data="courseInfo" @videoLocation="videoLocation" @onPlayVideo="onPlayVideo"
                 :score="courseInfo.score"></my-note>
             </div>
         </div>
@@ -165,7 +165,7 @@
                     :toUsers="toUsers"></comments>
                 </div>
                 <div  v-show="courestab==3" class="coures-note">
-                  <note-comments v-if="courseInfo.id && courseInfo.id != ''" :obj-type="6" :obj-id="courseInfo.id" :name="courseInfo.name"></note-comments>
+                  <note-comments  :key="timer" v-if="courseInfo.id && courseInfo.id != ''" :obj-type="6" :obj-id="courseInfo.id" :name="courseInfo.name"></note-comments>
                 </div>
           </div>
         </div>
@@ -208,6 +208,7 @@
 </template>
 <script>
   import { mapGetters } from 'vuex';
+  
   import portalHeader from "@/components/PortalHeader.vue";
   import portalFooter from "@/components/PortalFooter.vue";
   import comments from "@/components/Portal/comments.vue";
@@ -242,7 +243,9 @@
   import homework from '@/components/Course/homework';
   import assess from '@/components/Course/assess';
   import myNote from '../../components/Course/myNote.vue';
-  import apiFollow from "@/api/phase2/userfollow.js"
+  import apiFollow from "@/api/phase2/userfollow.js";
+  // import Vue from 'vue';
+  // Vue.forceUpdate();
   export default {
     name: "atticle",
     components: {
@@ -263,6 +266,7 @@
     },
     data() {
       return {
+        timer: '',
         notePlay: null,
         intTimeNote: '',
         courestab: 2,//默认是课程评论
@@ -332,10 +336,12 @@
         appendStudyOtherHandle:null,
       }
     },
+    
     mounted() {
       this.$watermark.set(this.userInfo.name + this.userInfo.loginName);
       this.courseId = this.$route.query.id;
       this.loadData();
+
     },
     computed: {
       ...mapGetters(['userInfo']),
@@ -373,6 +379,15 @@
       }
     },
     methods: {
+      Fn1(){
+        console.log('子组件发生变化');
+        // this.componentKey += 1; 
+        // this.$forceUpdate();
+        // window.location.reload()
+        //  this.coutab(3); 
+         this.timer = new Date().getTime()
+
+      },
       //非音视频课学习时长的增加,每一分钟保存一次
       appendStudyOtherTime() {
         //console.log('开始追加学习时长',this.isAppendTime);