ISO-88591 charset / text-encoding of jQuery UI / mobile possible?

Question

Searched the web, but failed to find a definite explanation. Several people reported problems and some claimed that UTF-8 is required. Therefore:

• My I use jQuery UI / mobile with any charset?
• May I especially use ISO-88591?
• Or does jQuery UI / mobile require UTF-8?

Certainly, the site uses this meta-tag:

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

Certain browser running on certain operation systems fail to display diacritical characters correct, name these characters ö ä ü Ö Ä Ü ß:

Mac OS X

• OK : Safari, Firefox, Chrome

Windows XP

• OK : Chrome [26.0.*]
• PARTIAL : Firefox [18.0.1], IE [8.*]

In case of PARTIAL, diacriticals sometimes appear fine, sometimes appear like � or such.

As far as I figured out, if jQuery reloads a 'partial', diacriticals break.

Answer 1

According to a thread about this topic on the jQuery UI forum, check the encoding of the jquery-ui.min.js. Try editing jquery-ui.min.js directly to use charset iso-8859-1 and it should work. (ref. https://forum.jquery.com/topic/weird-characters-showing-up-in-datepicker)