If you are not going to just follow the code as is, you need to know why this is necessary, but there is no explanation, so it was hard to follow. I think too much is left to the students. It is definitely not for beginners.

gunget

Hello! I see you had trouble with the class! The same formulas are used repeatedly in sections 2 to 12. The repeated formulas are explained in detail in the beginning of the class, so if you had trouble, I recommend that you study them again starting from section 2 (all the practice, explanation, and supplementary lessons!). If you still have trouble, please post them on the Q&A board and I will answer or create a supplementary lesson. Thank you :)

Rather than simply following a specific site, you will learn the scroll interaction know-how and key elements shared by knowledge sharers from the ground up, and learn and create various techniques and motions of UI scroll interactions widely used by domestic companies such as Apple.