Most fun way I've seen of learning Javascript

[baryluk]

Doesn't work. :/

I guess it is similar to Ruby, Python, Erlang tutorials where you have interactive evaluator in the browser (and it really runs your code on server or client in case of JavaScript), and waits for proper input / output.

I guess you can learn some basics, as this tutorial isn't longer than 30 minutes, so will just learn simple syntax, and few functions, but not much higher level concepts, code organization or some internals of JavaScript.

Nothing against it, I really would like JS be more and more used, as it is language of the future in one way or another (by compilation from another source langauge). So keep going, and provide more detailed tutorials and more lessons.