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An array containing the "acceptable" response languages specified by the user agent in the "Accept-Language" header of this request (req).




req.acceptedLanguages contains all the languages specified by the request's Accept-Language header (see RFC-2616.)

This method is used by Sails internally for its implementation of internationalization and localization. The i18n hook automatically serves different content to different locales, based on the request.


// -> ['en-US', 'en']


  • See the accepts module for the finer details of the header parsing algorithm used in Sails/Express/Koa/Connect.
  • Browsers send the "Accept-Language" header automatically based on the user's language settings.
  • You can expect the "Accept-Language" header to exist in most requests which originate from web browsers.

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