We just posted course on freeCodeCamp.org YouTube channel that will teach you how to transform messy, hard-to-maintain JavaScript code into clean, readable, and professional-quality code that scales. This course was developed by Tapas Adhikary. He'll...

freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech.

freeCodeCamp

A comprehensive course teaching developers how to identify code smells in JavaScript and refactor messy code into clean, maintainable solutions. Covers detection techniques, refactoring strategies, and practical tooling with ESLint and Prettier. Includes real-world examples, best practices, and hands-on assignments to build skills in writing professional-quality code.

Level Up Your JavaScript – Detect Smells & Write Clean Code

Clickbait image, the video literally displays the first one as the cleaner one just because it’s the ‘newer’ syntax lol

<img src="https://media.daily.dev/image/upload/s--wfjNdqY7--/f_auto/v1763539248/ugc/content_a54df78b-d96d-4c72-b807-911393e9eeca?_a=BAMAK+ZW0" alt="image">
These ones will be explained step by step for newbies. That’s the basic coding principles every dev must learn before start coding in my POV. Not to make the bad code clean, but not to produce that “smelling” code.