What is the min time for understand javascript

Question

Query

Answer 1

That depends on you.
The sooner you start, the sooner you'll achieve your goal.
Here's the course:
https://www.sololearn.com/Course/JavaScript/?ref=app

Answer 2

It depends on. Typically to learn something new it takes roughly 20 hours according a study. That's 1 week: 3 hours a day. or little over 3 months : 15 min a day. Good luck.