working with unicode from javascript via ajax

http://en.wikipedia.org/wiki/Utf-8
UCS Transformation Format - 8-bit
UCS = Universal Character Set

http://stackoverflow.com/questions/809620/utf8-or-utf-8

http://www.ietf.org/rfc/rfc3629

on the server, use:
http://search.cpan.org/~taniguchi/URI-Escape-JavaScript-0.04/lib/URI/Escape/JavaScript.pm

in conjunction with HTML::Entities::encode


http://en.wikibooks.org/wiki/Perl_Programming/Unicode_UTF-8

44 recipes for working with Unicode in Perl 5.
http://www.perl.com/pub/2012/04/perlunicook-standard-preamble.html

unicode tables

http://www.utf8-chartable.de/unicode-utf8-table.pl?start=8192&htmlent=1

http://www.cl.cam.ac.uk/~mgk25/ucs/quotes.html

http://www.javascripter.net/faq/mathsymbols.htm


h2. HTML Entities or Not

http://stackoverflow.com/questions/4696499/meta-charset-utf-8-vs-meta-http-equiv-content-type

q.
Also you should not use HTML entities in UTF-8. Characters like the copyright symbol should be typed directly. The only entities you should use are for the 5 reserved markup characters: less than, greater than, ampersand, prime, double prime. 

Entities need an HTML parser, which you may not always want to use going forward, they introduce errors, make your code less readable, increase your file sizes, and sometimes decode incorrectly in various browsers depending on which entities you used. 

Learn how to type/insert copyright, trademark, open quote, close quote, apostrophe, em dash, en dash, bullet, Euro, and any other characters you encounter in your content, and use those actual characters in your code. 
q..

#unicode
#perl