acha-framework/src/frontend/core/scripts/services/culture-service.js

is a modular framework on both client (angular.js) and server (node.js) side, it provides security, orm, ioc, obfuscation and ...

(function ($, angular, underscore, window, document, undefined) {
  'use strict';
  angular.module('frontend.services').factory('cultureService', [function () {
      var language = document.getElementsByTagName('html')[0].getAttribute('lang');
      var rtl = document.getElementsByTagName('html')[0].getAttribute('dir') === 'rtl';
      return {
        lang: language,
        rtl: rtl
      };
    }]);
}(jQuery, angular, _, window, document));