In the early sections, there might be issues with Node.js versions or VS Code extensions.
Whenever Jonas introduces a new built-in method (e.g., .splice() ), open the in a new tab and read the one-page summary. Getting comfortable reading documentation is a required skill for developers.
While the recording is from 2020, Jonas is famous for updating his course materials. He added a massive Node.js/Forkify section (a recipe search app) that uses modern tooling (Webpack, NPM, API calls). Even today, that project teaches you exactly how real development teams structure their files.
If you are diving into the world of web development, you have probably seen it mentioned in every Reddit thread and YouTube comment section: Jonas Schmedtmann’s The Complete JavaScript Course 2020: Build Real Projects! on Udemy.
: Learning modern OOP principles, including Classes, constructors, and encapsulation. Course Format & Support The Complete JavaScript Course 2025: From Zero to Expert!