Is your knowledge of basic vanilla JS good? If that is the case then I recommend looking at https://babeljs.io/docs/en/learn for a simple overview of the new features in ES6. There are more in depth sites for ES6 but I think the above link covers what you probably are going to use.
Ask HN: Best way to learn JavaScript in 2019?
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Re: Ask HN: Best way to learn JavaScript in 2019?
#22Go through around 100 exercises on https://freecodecamp.com for the fundamentals, and then maybe 50 or so on https://algodaily.com/challenges for more advanced techniques.
This should take you roughly 100 hours, but afterwards you'll be extremely well suited to start tackling JS libraries and building your own projects.
Re: Ask HN: Best way to learn JavaScript in 2019?
#23Do a trello list on the topics of this video and follow 'em religiously, Is working wonders for me:
10 Steps to Master Javascript within 15 Months | Is it possible? - WhatsDev: https://www.youtube.com/watch?v=7JVNjwilPMU