That's because the default log threshold for the PopUpAppender is DEBUG, meaning trace messages don't appear, which is intentional. However, I do agree that it's misleading to have the Trace button on the demo when there's no way on the page to change the log level.
Function getLogger undefined in log4javascript_lite stub
Steps to reproduce:
1. In a blank HTML doc, create a script tag referencing the log4js lite stub.
2. Load blank html doc.
Expected behaviour
The html document should load without error
Actual Behaviour:
The error 'getLogger' is undefined occurs.
