js日期校验

//验证是否合法日期  
function CheckDate(strDate){  
               if(strDate.length>0){  
                var reg= /^(\d+)-(\d{1,2})-(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/;     
                   if(!reg.test(strDate)){     
                       return false;   
                   }  
                }  
               return true;  
            }
function isStartEndDate(startDate,endDate){  
                //alert(startDate+"==="+endDate);  
                if(startDate.length>0&&endDate.length>0){  
                    var startDateTemp = startDate.split(" ");  
                    var endDateTemp = endDate.split(" ");  
                    var arrStartDate = startDateTemp[0].split("-");  
                    var arrEndDate = endDateTemp[0].split("-");  
                    var arrStartTime = startDateTemp[1].split(":");  
                    var arrEndTime = endDateTemp[1].split(":");  
                    var allStartDate = new Date(arrStartDate[0],arrStartDate[1],arrStartDate[2],arrStartTime[0],arrStartTime[1],arrStartTime[2]);  
                    var allEndDate = new Date(arrEndDate[0],arrEndDate[1],arrEndDate[2],arrEndTime[0],arrEndTime[1],arrEndTime[2]);  
                    if(allStartDate.getTime()>allEndDate.getTime()){  
                        return false;  
                    }  
                }  
                return true;  
            }