I think this lecture can be very difficult for those who are new to JavaScript. However, if you want to learn JavaScript from the beginning in a deep and thorough way, I highly recommend it. At first, I thought I had studied the basics of JavaScript quite a bit, so I was very hesitant about whether to buy the beginner's lecture. But if I had skipped the beginner's lecture, it would have been a big mistake... There was more unknown content and confusing parts than I thought. The advantage of this lecture is that the flow of the lecture is very logical, so it is easy to understand the concepts. It starts with defining terms and gradually expands the knowledge, which is truly an art... I knew about constructor functions and prototype concepts, but I didn't understand them well, but it was really amazing to see the flow of them start to take shape in my head😆😆😆😆😆 I expect other lectures to be of high quality, deep, and genuine. I sincerely appreciate the sharing of knowledge with substance. I'll see you in the engine core lecture!