function ChkData(str) { //if (str.length==8) //{ // str=str.substr(0,4) + '-' + str.substr(4,2) + '-' + str.substr(6,2); // //alert(str); //} var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); if(r==null) return false; var d= new Date(r[1], r[3]-1, r[4]); return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]); }
function isValidDate(dateStr) { var datePat = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/; // requires 4 digit yearvar matchArray = dateStr.match(datePat); // is the format ok? if (matchArray == null) { //alert("Date is not in a valid format.") return false; } month = isMonthName(matchArray[3]); // parse date into variables day = matchArray[1]; year = matchArray[4]; //alert(day+" "+month+" "+year); if (month < 1 || month > 12) { // check month range alert("月份必须在1到12之间。\nMonth must be between 1 and 12."); return false; } if (day < 1 || day > 31) { alert("日必须在1到31之间。\nDay must be between 1 and 31."); return false; } if ((month==4 || month==6 || month==9 || month==11) && day==31) { alert(month+"没有31天!\nMonth "+month+" doesn't have 31 days!") return false; } if (month == 2) { // check for february 29th var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); if (day>29 || (day==29 && !isleap)) { alert("February " + year + " doesn't have " + day + " days!"); return false; } } return true; }
{
//if (str.length==8)
//{
// str=str.substr(0,4) + '-' + str.substr(4,2) + '-' + str.substr(6,2);
// //alert(str);
//}
var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
if(r==null) return false;
var d= new Date(r[1], r[3]-1, r[4]);
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}
var datePat = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/; // requires 4 digit yearvar matchArray = dateStr.match(datePat); // is the format ok?
if (matchArray == null) {
//alert("Date is not in a valid format.")
return false;
}
month = isMonthName(matchArray[3]); // parse date into variables
day = matchArray[1];
year = matchArray[4];
//alert(day+" "+month+" "+year);
if (month < 1 || month > 12) { // check month range
alert("月份必须在1到12之间。\nMonth must be between 1 and 12.");
return false;
}
if (day < 1 || day > 31) {
alert("日必须在1到31之间。\nDay must be between 1 and 31.");
return false;
}
if ((month==4 || month==6 || month==9 || month==11) && day==31) {
alert(month+"没有31天!\nMonth "+month+" doesn't have 31 days!")
return false;
}
if (month == 2) { // check for february 29th
var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
if (day>29 || (day==29 && !isleap)) {
alert("February " + year + " doesn't have " + day + " days!");
return false;
}
}
return true;
}