I’m using the dojo dropdowndatepicker in a lot of my projects. Problem with this widget is that it only really supports the yyyy-mm-dd notation (as the standard is). But all the applications I develop the people want our local notation (dd-mm-yyyy). So I wrote a small fix that helps. Too bad it got rejected as it doesn’t fit in the idea of the project and the new widget set they are building.
For now it’ll be a patch I have to apply on all my dojo downloads to get the functionality I need from it. And let’s hope in the future we will migrate our code to the iso standards, right?