enrique wrote :

This is a question of where the work is done.

With resource bundles the server does the work and the browser displays
the text.

With JavScript, the browser must do the work. I do not believe that
JavaScipt has the equivalent of a HashMap, so the look-up might be
slow.

And the entire JavaScript file will be read, not just the portion for
that page (unless you have many JavaScript files, each for its own
page).

Be aware that most browsers cache JavaScript, and will NOT refresh it
even if the file date/time has changed. You would need to have the user
empty their local cache if the JavaScipt changes, or SHIFT-CLICK on the
refresh page button. IE is especially bad for this, and does not seem
to ever get a newer JavaScript file, at least not during a current
session.

I prefer to have the language files on the server. Once they are loaded
into the application memory, the HashMap look-up is really quite fast.