Project TicTacToe - done right

This is the followup / correction to https://youtu.be/52ia2C0XyRM. In this video I demonstrate the Perfect Programming Process introduced in https://youtu.be/UsVd67Ys1t4 and code a small Tic Tac Toe game in JavaScript. And I do it properly this time! It is a long video - more than an hour - so I suggest taking a break around step 5: Begin with the end. But still - in less than an hour - I analyze a board-game, describe the rules in extreme detail, plan how to code it, research the parts I don't know to code, design the user interface, code the game, test it, and get it working - all while explaining to you how you can do the same, without being an expert coder! The video is in real-time, it really does only take an hour! The code is available on github: https://github.com/programming2point0/TicTacToe - the main branch is this code, future expansions will have their own branches. Chapters: 0:00 - I am going to try again 0:50 - 1. Understand the problem 3:45 - 2. Understand the solution 10:05 - 2.1 the solution for check winner 16:28 - 3. Make a plan 19:16 - 4. Know what you know 23:04 - 5. Begin with the end 28:03 - 6. Pretend you know it all 32:37 - 7. Fill in the blanks 37:04 - ... Researching random 45:56 - 7.2 Filling in more blanks 48:14 - ... Writing the check winner code 58:32 - The Game Works! 1:01:40 - Closing remarks