后端数据报错提示

pages/my/order/electronicTicket/electronicTicket.vue

@@ -946,6 +946,12 @@ export default {
       this.$request('distribution/distribution/getAutoCode',data).then((res)=>{
         if(res.code == '00'){
           this.codes = res.data.codes
+          if(this.codes.length<0){
+            uni.showToast({
+						  title: '网络异常，请退出重试',
+						  icon: 'none'
+            })
+          }
           this.codeStart = new Date().getTime()
           this.codeFlag = setInterval(()=>{
             this.dynamicCodeRefresh()