So javascript is object oriented?

Answer 1

short answer is: yes

Answer 2

yes

Answer 3

Long answer: no. JavaScript is "object based" not object oriented. Stackexchange has some excellent discussions specifically about JavaScript and object oriented(OOP) v. object based(OBP).

The short answer is there a handful of qualities that define OOP and if all of them aren't present then the language isn't OOP. If the language contains objects then it has several of these qualities. It it has several but not all of these qualities it is OBP.