ListBox addItem of 100 or more has performance problems. about gwt HOT 10 CLOSED

Optimized ListBox by
   a)  using appendChild rather than insertChild wherever possible.
   b)  updating code to set value on the original node rather than calling setValue,
removing a element retrieval step.

Additional discussion:

http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/9b0763ea6c433cee/
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/d0224fd778400398/

I use GWT 1.6.1 on Windows.
The following code

        List data = ... // has 3472 elements (list of city names)
        ListBox lb = new ListBox();
        for (int i = 0; i < data.size(); i++) {
            lb.addItem(data.get(i).toString());
        }
        add(lb);

takes about 16 secs on a developer machine in hosted mode.
The performance in web mode is acceptable in FF3, but very slow on IE7.

I meet the same problem, the performance in IE7 is not acceptable, followed is a 
test code clip, when the pages is 20000,  it will cost ~250 seconds. 
This problem doesn’t exist in FF3.5

                ListBox pageSelectorTemp = new ListBox();
                for (int i = 0; i < pages; i++)
                {
                    pageSelectorTemp.addItem("0");
                }

I agree, IE7's performance is not acceptable, but GWT cannot do anything to help. Try

the attached file, it's pure JS, simpler than what GWT generates, but still it needs

~250 seconds to add 20000 items. The issue is IE7, not GWT. (actually, the issue is
IE, 
whichever version: IE8 scores at 130 seconds on my machine, while Chrome 4 alerts after

175 *milli* seconds only)

Please take a look at my workaround, which may be used in specific cases:
http://jvminside.blogspot.com/2009/12/adding-many-items-to-gwt-listbox-faster.html