Leap Year And Valid Dates
16 March 2011
Quick example of validating a date on the client-side without regex.
validDate = function (str) {
var valid = false,
d = new Date(str),
mm = d.getMonth() + 1,
dd = d.getDate(),
yyyy = d.getFullYear();
if (mm < 10) {
mm = "0".concat(mm);
}
if (dd < 10) {
dd = "0".concat(dd);
}
if ([mm, dd, yyyy].join("/") === str) {
valid = true;
}
return valid;
};
/*
validDate("02/29/2010"); //false
validDate("02/29/2012"); //true
validDate("02/29/2012", true); //false
validDate("12/12/2010"); //true
*/