判断当前时间的 时分 是否在一个时间段内

function checkAuditTime(beginTime,endTime){
            var nowDate=new Date();
            var beginDate=new Date(nowDate);
            var endDate=new Date(nowDate);
            
            var beginIndex=beginTime.lastIndexOf("\:");
            var beginHour=beginTime.substring(0,beginIndex);
            var beginMinue=beginTime.substring(beginIndex+1,beginTime.length);
            beginDate.setHours(beginHour,beginMinue, 0, 0);
            
            var endIndex=endTime.lastIndexOf("\:");
            var endHour=endTime.substring(0,endIndex);
            var endMinue=endTime.substring(endIndex+1,endTime.length);
            endDate.setHours(endHour, endMinue, 0, 0);
            if(nowDate.getTime()-beginDate.getTime()>=0 && nowDate.getTime() <= endDate.getTime()){
                return 1;    
            }else{
                return 2;
            }
        } 





var flag= checkAuditTime("11:30","20:30");