Assumptions like that can be done endlessly and you will never get 100% satisfaction but vanilla JS is the title and the main target here IMO. You do not start

Assumptions like that can be done endlessly and you will never get 100% satisfaction but vanilla JS is the title and the main target here IMO. You do not start learning JS by doing some heavy dutty React+Redux stuff. Same goes here, it's a "get basics" lesson.