提交代码~

pages/msgModule/wechat2/wechat2.js

         wx.closeSocket();
         console.log('连接断开');
     },
-    emotionChange: function () {
+    emotionChange() {
+        console.log(`测试打开表情`)
         this.setData({
             emotionVisible: !this.data.emotionVisible
         })

pages/msgModule/wechat2/wechat2.wxml

             placeholder="" 
             bindconfirm="send"
         />  
-        <image class="expression-msg-img" src="/images/home/expression-msg-icon.png" />
+        <image class="expression-msg-img" src="/images/home/expression-msg-icon.png" bind:tap="emotionChange"/>
         <image class="img-msg-img" src="/images/home/img-msg-icon.png" />
     </view>
     <view class="emotions" wx:if="{{emotionVisible}}">