JavaScript Intermediate to Advanced: Engine Core

Thank you, teacher. In the first class of the basic course, you said that JavaScript is the point of contact with the user, which touched my heart. I wanted to become a developer who thinks of the customer first, and I think I feel more proud as a front-end developer. I learned so much through the basic and intermediate-advanced courses!! It was amazing how things that I had found difficult when I tried to approach them in terms came to be understood naturally when I understood how the JavaScript engine works. This was exactly the lecture I wanted, and now I'm going to finish the ES6 basic and advanced courses. ㅎㅎ I want to apply it well in React and in real life, but I'm not sure exactly, but I'll try to do it well. ㅎㅎ Thank you so much for recording such a great lecture!

A lecture that I want to watch alone~ This is a lecture by Kim Young-bo that I trust because I have already experienced it in books and offline. You can't find such in-depth content anywhere else. This is not a lecture that just skims the surface. I recommend it to those who want to learn JavaScript properly.

I am a junior developer currently working as a front-end developer. I thought I knew it well, but after watching this lecture, I found myself knowing it here and there. Now, I will write my course review. I am writing this review after listening to all four lectures, from the JavaScript beginner course to the ES6 advanced course. I think the best course review is when you can write about things that you couldn't write because you had vague knowledge. For example, by knowing the argument value that will receive the parameter value as this after the map, forEach, and filter functions, I was able to finish the time complexity of (n2) by repeating the loop twice, and as the concept of call, apply, and bind became clearer, I was always confused about this, but when I was confused, I could directly bind this when calling the function and handle it. And as for the concept of scope, while listening to the in-depth course, I found it step by step, and if it is not there, I look for __proto__, and if it is not there, I look for __proto__ in the lower part, etc. I don't know if this expression is right, but I was really blessed while listening to Youngbo's lecture... And last night, while implementing csr directly in vanilla, I felt the fun of learning about things that I would not have even known the principles of in the front-end framework, such as inheriting built-in objects for class events and processing them. Certainly, even people in the team said that my code has suddenly become surprisingly clean. They told me stories. For those of you who are thinking about taking the course, this is a course that you will not regret spending money on. Especially for those of you who want to know and use it for sure, you will feel that there are many more convenient, better, and more efficient built-in functions than the ones you used every day. Don't hesitate, I recommend that you purchase all of Youngbo's lecture series and listen to them all. You will feel that the quality of your code will change and your way of thinking will change. I am proud of it.

I could feel the inner strength of an expert who knows the internal structure of JavaScript very well. I am looking forward to the next lecture! Thank you.

It was a complete success in 2 days. I couldn't put it down because I was curious about the next content. It was a bonus that I felt that the basics were weak. Thank you for the great lecture.

Wow, this is awesome. There were parts that I skipped over with excuses that I was busy while working and parts that I had doubts about, but they are all in this lecture. In particular, the function part and the execution context part are really impressive. I reviewed it more than twice, and I plan to take the lecture again for parts that I don't understand. Thank you.

I think this is a really good lecture. It explains in-depth content very easily. The difficulty level is listed as intermediate to advanced, but I think it will be fine if you watch the instructor's previous lectures. Thank you so much for making such a good lecture. I think the skills of developers in our country will improve quickly ^^

Teacher. I am a student who signed up for your lecture today. I know the basics of JS, but there are so many holes, and I feel like I am still lacking in some areas, so I am planning to take intermediate-advanced, ES basic, and ES advanced classes. I know the basic grammar, but I am planning to start from intermediate-advanced, and if I feel like I am lacking, I will take beginner classes. Is this okay?