isDate property
bool?
isDate
Checks whether the String is valid Date:
Valid formats
- dd/mm/yyyy
- dd-mm-yyyyy
- dd.mm.yyyy
- yyyy-mm-dd
- yyyy-mm-dd hrs
- 20120227 13:27:00
- 20120227T132700
- 20120227
- +20120227
- 2012-02-27T14Z
- 2012-02-27T14+00:00
- -123450101 00:00:00 Z": in the year -12345
- 2002-02-27T14:00:00-0500": Same as "2002-02-27T19:00:00Z
Implementation
bool? get isDate {
if (this == null) return null;
if (this!.isEmpty) return false;
final regex = RegExp(
r'^(?:(?:31(\/|-|\.)(?:0?[13578]|1[02]))\1|(?:(?:29|30)(\/|-|\.)(?:0?[13-9]|1[0-2])\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:29(\/|-|\.)0?2\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\d|2[0-8])(\/|-|\.)(?:(?:0?[1-9])|(?:1[0-2]))\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$',
);
if (regex.hasMatch(this!)) return true;
try {
DateTime.parse(this!);
return true;
} on FormatException {
return false;
}
}