function isdate(strDate){

var strSeparator = "-"; //日期分隔符

var strDateArray;

var intYear;

var intMonth;

var intDay;

var boolLeapYear;

strDateArray = strDate.split(strSeparator);

if(strDateArray.length!=3) return false;

intYear = parseInt(strDateArray[0],10);

intMonth = parseInt(strDateArray[1],10);

intDay = parseInt(strDateArray[2],10);

if(isNaN(intYear)||isNaN(intMonth)||isNaN(intDay)) return false;

if(intMonth>12||intMonth<1) return false;

if((intMonth==1||intMonth==3||intMonth==5||intMonth==7||intMonth==8||intMonth==10||intMonth==12)&&(intDay>31||intDay<1)) return false;

if((intMonth==4||intMonth==6||intMonth==9||intMonth==11)&&(intDay>30||intDay<1)) return false;

if(intMonth==2){

if(intDay<1) return false;

boolLeapYear = false;

if((intYear%100)==0){

if((intYear%400)==0) boolLeapYear = true;

}

else{

if((intYear%4)==0) boolLeapYear = true;

}

if(boolLeapYear){

if(intDay>29) return false;

}

else{

if(intDay>28) return false;

}

}

return true;

}