This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
In the Basic property configuration form, for the Return value data type field you specify the data type of the object by selecting it from the drop-down menu. However, if the type is not in the list, you must edit the Property:Javascript_data_type and add the data type to the list. The problems with this are, 1 - keeping the list in some order that makes sense (alphabetical), and 2 - dealing with a potentially endless list of types. We need to come up with a better way of specifying the type if it is not one of the primitive types. Perhaps an additional text input field under the drop-down where you can specify the type if you choose "Other" from the drop-down. The "Other" type would not be persistent, but defined for the page.