javascript Date getYear( )

Returns a number corresponding to the year of an instance of the Date object, but exhibits irregular behavior. In theory, the method should return the number of years the date object represents since 1900. This would produce a one- or two-digit value for all years between 1900 and 1999. However, when you reach 2000, the pattern fails. Instead of producing values starting with 100, the getYear( ) method, some browsers return the same four-digit value as getFullYear( ). For this reason, it is best to use getFullYear( ) whenever possible (but observe the browser compatibility for that method). Note that this method is not an ECMA-supported method, whereas getFullYear( ) is.