Console.log is not a function


why owncloud removed console.log? This is a fundemantal function and I don't understand why it was removed.
If I want to use it the console shows

VM6794:1 Uncaught TypeError: console.log is not a function(…)

As a developer I am using it a lot but, how can I make it work again?
This was an issue in OC8 and also 9..



here is a short video...