A good challenge to reinforce knowledge and practice in JavaScript?

Question

JavaScript

Maybe someone knows? I studied the books javascript.ru/book/learning-javascript , habrahabr.ru/post/253101 and the site https://learn.javascript.ru/
Well, a video on YouTube
Advise some service to copy or create something to hone your skills

Answer 1

Plus codewars.com, there are interesting tasks for logic, algorithms and subtleties of the language. But it's still not a product problem. You can solve a lot of them, but never learn to do what is usually needed at work. They develop something else.
Usually everyone writes there-applications, but this is already boring and overwritten :) I recommend trying to write an audio player. A site where you can listen to music. You can even authorize the user through last.fm and, for example, recommend music to him based on his preferences, or even turn it on right away (pulling up tracks from VKontakte).

Answer 2

CodeWars.com

Answer 3

Write an Internet store that works without reloading the page! How can you write to go to work

Answer 4

A very cool service where you can consolidate your knowledge and get a combat project: www.freecodecamp.com

Answer 5

node school

Answer 6

Write your Angular.js

Answer 7

I advise you to write your own library or framework, and then using it to write some kind of application (tracking service, online store, game engine, etc.)