Hello Guys,
I have been trying to solve the Code academy exercise ‘Build a Library’ and have run into an obstacle.
Somehow I keep getting an error due to my .push() property being undefined?
The Error occurs in line js:40!
https://gist.github.com/4a9afaa01a60776848339155428246ec
Perhaps someone can shed some light into the matter?
Dankeschön x
A.