My editor implementation involves some select fields that contain a huge number of options. I'd like to be able to let the user type in some text to filter the options down. One natural way to do this would be to add a text field that does not get submitted to the editor engine, but is only used to filter down the select list, like so.
The dependent function would be great for this. I'm not sure how to add such a dummy field, however. It seems like everything I add to the editor form gets sent back to the server. Is there a way to add a field that does not go back to the server?