What are some advanced JavaScript concepts?

Advanced JavaScript concepts include Async/Await, Hoisting, Modules, Object Oriented Programming, Scope and Execution Context, ES6, ES7, ES8, ES9, ES10, Asynchronous JavaScript + Event Loop, this` keyword, Error Handling, Memory Leak, Type Coersion, Higher Order Functions, .call(), .apply(), .bind(), and Garbage Collection.

Is it hard to learn advanced JavaScript?

If you're new to programming, you may find JavaScript to be a more difficult language to pickup than, say, Python. JavaScript has a lot of "weird parts" that can get confusing quickly. Fortunately, the JavaScript community is very large and you can find help everywhere from Meetups to Discord groups.

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Advanced JavaScript Concepts: 3 killer courses for 2020

Is The Complete Web Developer in 2020: Zero to Mastery worth it?

The Complete Python Developer: Zero to Mastery by Andrei Neagoie [review]