When the class first started, I saw it for a few days and couldn't see it because of work, but I'm watching it again these days! Before, I had vaguely seen the contents in the book, so I didn't understand them well, but this lecture explains everything from the basics to advanced concepts really well and easily. I think that no matter what framework you use, you should have a solid foundation in the basics of JS, so this is a great lecture for solidifying the basics! I think I'll have to look it up and take it repeatedly if I get confused even after completing the class. Thank you~!