This is a required course. I recommend that you finish the basics of JavaScript and listen to it. No, it is required. Otherwise, you won't understand it. I think I definitely finished BOM DOM through this course. I listened to it to prepare for a college course, but fortunately, I think I prepared thoroughly. As a tip for the course, you should listen to everything without missing anything because egoing explains it in detail and thoroughly. I thought I listened to everything after taking the course once, but I listened to it a second time and there were other important parts. I ended the basics of the long JavaScript course here. Thank you, egoing. Oh, network communication can be difficult for beginners. It would be better to take other courses, such as php, database, and node.js.