update

src/modules/course/views/CourseView.vue

@@ -179,14 +179,16 @@ const handleDetail = function () {
           </el-tab-pane>
         </el-tabs>
       </div>
-      <div class="view-btn c" @click="detailFlag = false" v-if="detailFlag">
-        <img src="@/assets/images/icon-btn-b.png" class="icon" />
-        <img src="@/assets/images/icon-btn-a.png" class="icon-a" />
-        <div class="text">
-          <i>︽</i>
-          <span>收起</span>
+      <template v-if="props.data?.length !== 1">
+        <div class="view-btn c" @click="detailFlag = false" v-if="detailFlag">
+          <img src="@/assets/images/icon-btn-b.png" class="icon" />
+          <img src="@/assets/images/icon-btn-a.png" class="icon-a" />
+          <div class="text">
+            <i>︽</i>
+            <span>收起</span>
+          </div>
         </div>
-      </div>
+      </template>
     </div>
   </div>
   <el-dialog v-model="dialogInfo.visible" :title="dialogInfo.title" width="472px" center>