[whatwg] Please consider adding a couple more datetime <input> types - type="year" and type="month-day"

[Christoph Päper]

Henri Sivonen:
> On Aug 9, 2010, at 04:07, Tantek Çelik wrote:
> 
>> * it has the *semantic* of being a year,
> 
> Why is it useful to declare this semantic to the browser? What functional difference do you envision compared to a field that accepts an integer (…)?

- Input two-digit year, transmit four-digit year.
- Input year name or number in a different system (including “AD”/“BC”/“CE”, emperor eras etc.), transmit proleptic Gregorian year number. (Some calendar eras share their definitions of year length and start, some are close enough to be considered equivalent in practice.)