This solution partially works with Chrome 35: the dropdown does not show any selection when the list of option is invisible, but shows the first ... ... <看更多>

As you have suggested, I would recommend in the instance of a required field, that you don't have the "please select" option when the user ... ... <看更多>

For my app it is important that select dropdowns be blank when none of the options match the bound value. Does this even work in plain HTML? ... <看更多>