jQuery Forum

I don't know about jQuery, I doubt it, but apparently IE does have an
XMLSerializer. Of course, the syntax would be different. You can try
searching for "jscript xmlserializer" and see if that yields anything
useful. But then you'd probably be out of luck with Safari, Opera,
etc. You might end up having to write your own plugin to handle all
the browsers.
Or, and this probably isn't very appealing either, you could do it
manually. For example, jQuery has the .html() method that returns the
innerHTML property. You could try creating an empty div element,
inserting the XML, and then reading the innerHTML back out. I haven't
tried it. It's just an idea.
Hopefully, someone will have a more elegant solution.
Larry

Try this,
//IE
if (window.ActiveXObject)
{
var string = xmlData.xml;
}
// code for Mozilla, Firefox, Opera, etc.
else
{
var string = (new XMLSerializer()).serializeToString(xmlData);
}