Where can I find or who can give me good explanation of last ECMAscript lections(Promises, iterators, generators, etc)?

Question

In sololrarn it's very bad explained

Answer 1

https://www.sololearn.com/post/96373/?ref=app

open "External learning materials" at:

https://code.sololearn.com/WKKkpq0efxai/?ref=app

You can also search for lesson about generator in this catalog

https://www.sololearn.com/post/102256/?ref=app