Pretty straightforward question!
What does wp-list.js do?
This file is for list manipulations with jQuery: add, delete or dim list items. It was introduced in Ticket #4805 to replace some prototype code.
Attached to the ticket is a sample plugin which holds the actual documentation. It doesn’t work really good … line 461 should be:
But at least you can test what the code really does in a reduced example.
The readable code for the file is in