What JS is enough for a good job ?

Answer 1

It is a one of the requirement for front-end developer.
Try expertise the JavaScript or learn other languages.
The more you learnt, the higher the chance to get the job.

Answer 2

React, Angular and Node.js

https://www.sololearn.com/post/97123/?ref=app

but you still need to begin with the basics

try this

https://www.sololearn.com/post/105678/?ref=app