Can't create XML node with cyrillic name in IE11

Maybe IE11 has an issue similar to what Firefox had in the past:

https://bugzilla.mozilla.org/show_bug.cgi?id=431701

That means that although your page is loading the correct encoding, IE11 is creating the new document with a default encoding which is not the expected one. There's no way to check that besides looking into IE11 source code, which we don't have.

Have you trying to add non-ASCII characters in other places besides element names? Like an attribute value or a text node?

I searched how to change the created document encoding and haven't found any solution for that.

To solve your problem I would suggest to use a DOMParser and generate a document from a XML string, like the following:

var parser=new DOMParser();var xmlDoc=parser.parseFromString('<?xml version="1.0" encoding="UTF-8"?><Выборка>Выборка текста</Выборка>',"text/xml");

All browsers seems to support it for XML parsing. More about DOMParser on the following links, including how to provide backward compatibility with older IE versions:

http://www.w3schools.com/dom/dom_parser.asp

https://developer.mozilla.org/en-US/docs/Web/API/DOMParser

If you don't want to generate your XML just by concatenating strings, you can use some kind of XML builder like in this example: http://jsfiddle.net/UGYWx/6/

Then you can easily create your XML in a more safe manner:

var builder = new XMLBuilder("rootElement");builder.text('Some text');var element = builder.element("someElement", {'attr':'value'});element.text("This is a text.");builder.text('Some more Text');builder.element("emptyElement");builder.text('Even some more text');builder.element("emptyWithAttributes", {'a1': 'val1', 'a2' : 'val2'});$('div').text(builder.toString());

I have always been very reluctant to use non-ASCII characters inside source code. Try escaping the string; maybe it helps.

doc.createElement("\u0412\u044B\u0431\u043E\u0440\u043A\u0430")