I've been studying Front-end well since I started listening to Jeonghwan's lectures, starting with React! I'm so grateful that he doesn't just teach simple grammar, but also tries to help me understand the principles. ㅠㅠ For someone like me who needs to know all the principles, I think this is a great lecture!! I'm trying to listen to all of Jeonghwan's lectures as much as possible :) Thank you for recording such a great lecture.