Here is that essay.

The Complete JavaScript Course 2020: Build Real Projects! is a free online course that covers the basics of JavaScript programming language. The course is designed for beginners and intermediate learners who want to improve their JavaScript skills. With this course, you'll learn how to write clean, efficient, and well-documented code.

You won't just learn how to code; you'll learn why it works under the hood, covering the event loop, "this" keyword, and closures.

It sounds like you are referring to a query about finding a famous Udemy course — "The Complete JavaScript Course 2020: Build Real Projects!" by Jonas Schmedtmann — available online for free ("en ligne gratuite").