isValidFormat
Check if code matches common ISO 3166-1 standard. Just checks the format, doesn't look if the code actually exists.
Return
true if code format is valid.
Parameters
value
the Alpha-2 country code to check.
Check if code matches common ISO 3166-1 standard. Just checks the format, doesn't look if the code actually exists.
true if code format is valid.
the Alpha-2 country code to check.