Proposal for NumberFormat and DateTimeFormat constructors

Nebojša Ćirić cira at
Tue Aug 16 16:59:51 PDT 2011

Added to the main document. Thanks for the input.

16. август 2011. 16.57, Norbert Lindenberg <ecmascript at
> је написао/ла:

> The current specs for the NumberFormat and DateTimeFormat constructors in
> the ECMAScript internationalization API provide for 3 (NumberFormat) or 2
> (DateTimeFormat) different ways to specify the desired formats: using style
> properties, using skeleton properties, and (for NumberFormat) using
> patterns. Skeletons for NumberFormat are awaiting clarification, and Eric
> (Microsoft) has proposed an alternative for DateTimeFormat skeletons.
> I've been thinking about how this can be streamlined, and would like to
> propose:
> 1) Remove patterns from NumberFormat. I can imagine a few clients for which
> patterns would be useful, such as spreadsheet-type applications or
> value-added internationalization libraries. However, they require clients to
> provide localized patterns, and the number of applications for which this is
> both necessary and reasonable is fairly small. Most applications are better
> off using styles or skeletons, which let the implementation of the
> internationalization API fully take care of localization. (Patterns would
> actually be more useful for DateTimeFormat, where the limited number of
> supported skeletons will force more clients to roll their own, but there we
> don't offer them.)
> 2) Drop skeletons from NumberFormat, and instead offer additional
> properties through which clients can taylor the selected format style to
> their needs. I've written up an API proposal that provides the same
> functionality as skeletons.
> 3) Merge styles, skeletons, and the Microsoft proposal for DateTimeFormat
> into a unified approach with style values that are skeleton-like, but easier
> to understand, and can be added to in future versions of the API. I've
> written up an API proposal for this as well.
> The API proposals are located at:
> Best regards,
> Norbert

Nebojša Ćirić
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