A critical scene in his JavaScript course involves him writing a large function, staring at the screen, and muttering, "This is ugly. This is not DRY (Don’t Repeat Yourself)." He then deletes 30 lines of code and replaces them with 10 lines of higher-order functions. For a beginner, this is terrifying. For an intermediate, it is enlightenment. You are watching a master reject his own work in real-time. This teaches the most elusive skill in software engineering: .
To the aspiring developer reading this: Do not watch the videos at 2x speed. Do not skip the coding challenges. Do not download the finished source code. Sit. Pause the video. Type the code. Break the code. Fix the code. If you invest 200 hours into his courses, you will save 2,000 hours of future debugging confusion. You will stop asking, "How do I do X in Framework Y?" and start asking, "What is the underlying principle governing this interaction?" watch jonas schmedtmann videos
This length is not bloat; it is rigor. He dedicates three hours to the Event Loop, call stack, and Web APIs before you write a single DOM manipulation. He spends an entire module on the cascade and specificity in CSS. For the impatient learner, this is torture. For the serious engineer, it is liberation. By watching Schmedtmann, you internalize the of computation. When you finally encounter a novel bug in your job, you don’t frantically Google for a solution; you mentally retrace Schmedtmann’s logic flow. You understand how the machine thinks because he forced you to walk the long road. A critical scene in his JavaScript course involves
Schmedtmann, conversely, is a master of . His hallmark is the "staggered reveal." He does not present a perfect, final product. He presents a bug. He asks, "Why is this happening?" He fixes the bug. He refactors the mess. He shows you the evolution of thought, not just the fossilized result. Watching him code is akin to watching an architect lay a foundation, test the soil, realize the wood is warped, adjust the blueprints, and then build the house. You are not learning a framework; you are learning problem-solving resilience . For an intermediate, it is enlightenment
Ironically, the greatest lesson from watching Jonas Schmedtmann has nothing to do with JavaScript or CSS. It is a lesson in .