This is not a good lecture for first-time learners. It moves too quickly without giving time to look at the code, and it was inconvenient to save the code covered in the lecture. Also, the explanations seem too complicated. If I had known nothing about JavaScript at all, I think it would have been difficult to follow. It seems decent for someone who already has a general understanding of JavaScript and wants to solidify everything in one go.

The lectures are thorough yet easy to understand with excellent explanations, and especially by introducing the latest React-related packages and showing how to use them, it really sparks my motivation to develop.

That's awesome!

I always enjoy taking your courses. Thank you.

I was deeply impressed by the overall project design, which is very solid. While there's no single correct answer in programming, unlike some courses that use shortcuts or immediately efficient methods for the sake of progress, this course demonstrates an approach that faithfully follows the 'orthodox' principles. Thanks to this, I was able to properly learn Best Practices that are worth referencing in real-world work that requires collaboration. However, the difficulty level is definitely challenging for beginners to follow. While there may have been constraints on the course duration, if you could first explain the overall flow of problem-solving visually before implementation, beginners would be able to complete the course more easily without losing track of the overall context.

While doing full-stack development, I've been so focused on just getting things implemented that I haven't really studied frontend in depth. I'm also quite careful when choosing courses, so I always worry "what if the course content isn't good or satisfying for what I paid?" These concerns build up until right before I hit the purchase button, and I have many courses I started but never finished... First of all, Instructor Lee Jung-hwan's courses have such excellent quality that I think you can trust his name alone when enrolling. The scripts and materials he prepares are extremely satisfying. I think diction and content delivery are the most important factors, and he excels in these areas too - he's clear and straightforward, and he explains in detail things like why we need to implement things a certain way, which is really great. You know that expression "work less, earn more"...? I want to tell the instructor "work a lot and earn even more for it"...😊😊 Personally, I'm interested in RN too, so I'm eagerly waiting for an RN course to come out. Cheering for you, instructor!

I had already taken JavaScript courses once or twice before. But strangely, I always felt like I knew it, but when I actually tried to use it, it never worked out well. This course felt like it organized all those ambiguous parts one by one. It wasn't just about explaining syntax and ending there, but it was great that the instructor continuously connected and explained why this concept is needed and how it's used later in SPAs. What I especially liked was the project section. Usually, you just follow along and that's it, but this course had a flow of intermediate project → recognizing problems → supplementing concepts → final project, so I couldn't help but think. Honestly, it wasn't easy, but I gained a lot from it. The course materials (handbook) are also well-organized, so I keep referring to them not only when taking the course but also when reviewing. I would recommend this course to anyone who wants to properly organize JavaScript once again.

I'm always enjoying your content. Thank you.

Thank you for the easy-to-understand lecture. I'm coding with AI, but I realized I need to be able to read the internal code, so I enrolled in this course. I trust and purchase the One Bite series. I look forward to more great lectures in the future.

That's awesome!