Share 'Making the Jump to AS 3.0'

In AS 3.0, it is not easy to find a child MovieClip by reference if it did not appear on the first frame. So the cleanest way is probably to attach a base class to the button or interactive element in the library linkage. This is nothing new, folks did this in AS 2, as well. For some things, having the class associated with a library clip makes a lot of sense, but I also look at that from an app…