Peter:
I must note that the “name” attribute is not valid for “div” tags according to W3C. According to this page, the only permitted attributes of the “div” tag are global attributes, of which “id” and “title” are two but “name” is not.
That being said, I believe that the solution is very simple. Both the jqxDateTimeInput and jqxNumberInput widgets, as well as any other widgets that mimic standard form inputs but with <div> at the root, should have the desired “name” attribute passed in as a parameter/option entitled “fieldname.”