The best Vue introductory course! If I hadn't built it with Vanilla JS, I wouldn't have known why it was convenient, but I was able to feel it by making the same screen with VanillaJS, Vue, and Vue Components. If you don't have knowledge of ES6 grammar (allow function, this, promise, etc.), it might be a little difficult to listen to VanillaJS (best if you study and listen first), but even if you lack knowledge of ES6, it's not too much of a problem if you just remember to the extent of 'Ah, this grammar is like this. I should listen to the lecture and study'