Does Javascript require indentation??

Answer 1

Python is one of the only languages where indentation is meaningful for the program. That said, in other languages, while it's not required, indentation helps you and others to read your code more easily. You even have some text editors that can indent your code properly for you, like emacs (providing you configure it accordingly).

Answer 2

it's not required but it's highly recommended as it make's life easier when recognising certain parts of code, when checking and rectifying bugs or when someone else needs to access your code etc...