this.beginTime="2031-03-20 00:00:00"
             this.endTime="2031-03-20 00:00:00"

            this.beginTime=new Date(this.beginTime)
            this.endTime=new Date(this.endTime)

            // CST和GMT+0800时间转换
            this.beginTime=this.beginTime.getFullYear()+"-"+Number(this.beginTime.getMonth() + 1)+"-"+this.beginTime.getDate()+" "+
                Number(this.beginTime.getHours()>13?this.beginTime.getHours()-14:this.beginTime.getHours()+10)
            +":"+this.beginTime.getMinutes()
            this.endTime=this.endTime.getFullYear()+"-"+Number(this.endTime.getMonth() + 1)+"-"+this.endTime.getDate()+" "+
                Number(this.endTime.getHours()>13?this.endTime.getHours()-14:this.endTime.getHours()+10)+":"+this.endTime.getMinutes()

重点：

 Number(.getHours()>13?.getHours()-14:.getHours()+10)