datejs-rails wraps the datejs library in a rails engine for simple use with the asset pipeline provided by rails 3.1. The gem includes the last official release of datejs, which is from 2007.
datejs extends the Javascript date object to allow for simple date parsing, calculation, and formatting.
Add the following to your gemfile:
gem 'datejs-rails'
Add the following directive to your Javascript manifest file (application.js):
//= require date
This will require the en-US version of datejs. All other localizations are available as well. For instance, you could instead:
//= require date-fr-FR
Optionally, require extras.js for strftime-style FormatSpecifiers.
//= require datejs-extras