Web - Client

Stuck on the ’third floor’ now... any pointers?

I’m on same spot. I think we need to substitute the unescape chqracers in the bigger sting BUT I don’t know what encoding it is Base64 ??

Remember the unescape function removes escape characters. If it removes them from another function you escape to chars. What is inside that unescape? What do all unescape functions need 2 of ? and finally what 4 characters make up those necessary signs, and go at the ends.

I’m still stuck. Any good resources I should look at that I could learn what I need in order to solve?

PS: I know 0 js

EDIT: I got it, but really I was just messing around and happen to get the right answer