You are absolutely right (:
I tried to focus on explaining the functors concept, rather than implementation in any language.
JS was chosen as it has easy syntax readable by many.
I didn't want to go into things such as prototype etc'.
But your comment is most welcome, in case it will confuse other people, I hope they will be able to get their answer here (:
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.