The field being four digits long doesn't restrict its contents to four digits only. I suppose you do raise an interesting concern; should the "year" field also permit the entry of BC/AD? If so, that might invalidate the ability to use a number field; you'd need to use a validation pattern on a standard text field.
—Kit On 09/08/2010, at 10:46 AM, Andy Mabbett wrote: > > On Mon, August 9, 2010 00:44, Kit Grose wrote: >> How is a "year" input any different from a four-digit input type="number" >> field? > > Years can be more of fewer than four digits. Julius Caesar was born in 100 > BC, for instance, while Manius Acilius Glabrio was consul in 91 AD. > > -- > Andy Mabbett > @pigsonthewing > http://pigsonthewing.org.uk >