/**
* DHTML date validation script.
*/
// Declaring valid date character, minimum year and maximum year
var dtCh= "-";
var minYear=1900;
var maxYear=2100;
function isInteger(s){
var i;
for (i = 0; i < s.length; i++){
// Check that current character is number.
var c = s.charAt(i);
if (((c < "0") || (c > "9"))) return false;
}
// All characters are numbers.
return true;
}
function stripCharsInBag(s, bag){
var i;
var returnString = "";
// Search through string's characters one by one.
// If character is not in bag, append to returnString.
for (i = 0; i < s.length; i++){
var c = s.charAt(i);
if (bag.indexOf(c) == -1) returnString += c;
}
return returnString;
}
function daysInFebruary (year){
// February has 29 days in any year evenly divisible by four,
// EXCEPT for centurial years which are not also divisible by 400.
return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
for (var i = 1; i <= n; i++) {
this[i] = 31
if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
if (i==2) {this[i] = 29}
}
return this
}
function isDate(dtStr){
var daysInMonth = DaysArray(12)
var pos1=dtStr.indexOf(dtCh)
var pos2=dtStr.indexOf(dtCh,pos1+1)
var strYear=dtStr.substring(0,pos1)
var strMonth=dtStr.substring(pos1+1,pos2)
var strDay=dtStr.substring(pos2+1)
strYr=strYear
var temStrDay="";
var temStrMonth="";
//alert( strMonth.length );
if (strDay.charAt(0)=="0" && strDay.length>1) temStrDay=strDay.substring(1)
if (strMonth.charAt(0)=="0" && strMonth.length>1) temStrMonth=strMonth.substring(1)
for (var i = 1; i <= 3; i++) {
if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
}
month=parseInt(temStrMonth)
day=parseInt(temStrDay)
year=parseInt(strYr)
if (pos1==-1 || pos2==-1){
controlSubmit =false;
alert("时间格式为:2006－09－03")
return ;
}
if (strMonth.length != 2 || month<1 || month>12){
controlSubmit =false;
alert("请输入合法的月,例如:02")
return ;
}
if (strDay.length != 2 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
controlSubmit =false;
alert("请输入合法的日,例如:02")
return ;
}
if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
controlSubmit =false;
alert("请输入 4 位数的年份在 "+minYear+" 和 "+maxYear+"之间")
return ;
}
if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
controlSubmit =false;
alert("请输入合法的时间格式例如:2006－09－03")
return ;
}
controlSubmit =true;
}
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