Vue+Element 下拉框在条件情况下增加一条提示

Question

 remoteMethod(query) {
        if (query !== '') {
            var me = this;
            this.loading = true;
            this.$client.GetExamListByKeyword({keyword:query}).then(ret=>{
                var total = ret.data.Total
                me.loading = false;
                var list=[];
                for(var attr in ret.data.Exams){
                    list.push({label:ret.data.Exams[attr],value:attr});
                }
                me.ExamNameList=list;
            });
        } else {
          this.ExamNameList = [];
        }
      },

判断取到的total，如果total大于50就显示提醒：只能展示五十条数据，请再精确，如果小于50条，直接输出ExamNameList

Answer 1

remoteMethod(query) {
        if (query !== '') {
            var me = this;
            this.loading = true;
            this.$client.GetExamListByKeyword({keyword:query}).then(ret=>{
                let total = ret.data.Total
                me.loading = false;
                let list=[];
                for(var attr in ret.data.Exams){
                    list.push({label:ret.data.Exams[attr],value:attr});
                }
                                if (total > 50) {
                                    // 提示操作

                                    list.forEach((item,index) => {
                                        if (index < 50) {
                                            me.ExamNameList.push(item)
                                        }else {
                                            return;
                                        }
                                    })

                                }else {
                                    me.ExamNameList=list;
                                }
            });
        } else {
          this.ExamNameList = [];
        }
      },