jQuery’s Globalization library, developed in conjunction with Microsoft, provides full client-side globalization. With approximately 350 cultures in the list, it is bound to cover the formatting and parsing needs of most international web sites.
The actual features in jQuery’s Globalization are quite modest. After setting the jQuery.culture field to the desired language or language/country pair, you get access to parsing and formatting functions for dates, integers, and floating-point numbers.
The other feature you get out of the box is jQuery.localize. This is used to create resource dictionaries based on key/culture pairs. The values you store can in any form you wish, not just strings like most resource dictionaries. When retrieving the values, the engine looks for the best match on culture. For example, you can store localized strings for French (“fr”) and then provide country specific overrides for Canada (“fr-CA”). If at runtime it will look for a culture-country match first, and then check for just matching on culture.
jQuery Globalization is available on GitHub.