课堂中心清空对话按钮

src/components/classRoomHelper/index.vue

@@ -86,6 +86,18 @@
           <!-- <span :style="`background:url(${itemType==3?require('../../assets/icon/course/dialog_active.png'):require('../../assets/icon/course/dialog.png')});`"></span> -->
           <div>对话</div>
         </div>
+        <div
+          :class="[
+            'ch_nav_box_middle_item',
+          ]"
+          @click="clearDialogue"
+        >
+          <img
+          style="width: 22px;height: 22px;"
+            :src="require('../../assets/icon/course/clearH.png')"
+          />
+          <div>清空对话</div>
+        </div>
       </div>
       <div class="ch_nav_box_bottom">
         <div @click.stop="$emit('goStep', 0)">
@@ -146,6 +158,9 @@ export default {
     this.setWidth();
   },
   methods: {
+    clearDialogue(){
+      this.$message('点击了清空对话')
+    },
     setWidth() {
       let w = this.$refs.ch_box;
       let w2 = w.offsetWidth + 30 + "px";