1 00:00:02,210 --> 00:00:03,420 Now, again, 2 00:00:03,420 --> 00:00:06,860 over all those previous course sections, 3 00:00:06,860 --> 00:00:09,170 we learned a lot of new things. 4 00:00:09,170 --> 00:00:11,980 We learned a lot about JavaScript. 5 00:00:11,980 --> 00:00:16,980 And therefore, it is now time for another milestone project. 6 00:00:17,830 --> 00:00:21,300 We are going to build the game, Tic, Tac, Toe. 7 00:00:21,300 --> 00:00:24,560 We're going to build a website that runs that game 8 00:00:24,560 --> 00:00:25,720 to be precise. 9 00:00:25,720 --> 00:00:28,250 And for that, we are going to use 10 00:00:28,250 --> 00:00:31,900 what we learned about JavaScript, but not just. 11 00:00:31,900 --> 00:00:35,220 We are also going to write all the HTML 12 00:00:35,220 --> 00:00:39,150 and CSS code for this game. 13 00:00:39,150 --> 00:00:41,970 And as you can see already in the background, 14 00:00:41,970 --> 00:00:45,874 for this game, we are going to make sure that we got, 15 00:00:45,874 --> 00:00:48,060 of course, two players, 16 00:00:48,060 --> 00:00:51,070 because we need two players for that game. 17 00:00:51,070 --> 00:00:52,730 And for those players, 18 00:00:52,730 --> 00:00:55,270 we will be able to assign names 19 00:00:55,270 --> 00:01:00,270 by opening an overlay with an input field for the name. 20 00:01:00,410 --> 00:01:03,570 We can cancel that and close the overlay 21 00:01:03,570 --> 00:01:08,070 without saving the name or we do save the name. 22 00:01:08,070 --> 00:01:10,840 We will have some validation 23 00:01:10,840 --> 00:01:15,840 where we show some error styles and some error message, 24 00:01:15,890 --> 00:01:18,490 if the name is not valid, 25 00:01:18,490 --> 00:01:21,350 if we don't enter a name, to be precise. 26 00:01:21,350 --> 00:01:24,750 And that will all be driven by a JavaScript. 27 00:01:24,750 --> 00:01:28,010 The opening and closing of this overlay here, 28 00:01:28,010 --> 00:01:30,610 but also the form validation 29 00:01:30,610 --> 00:01:33,370 and handling the correct form data. 30 00:01:33,370 --> 00:01:35,580 It's not sent to any server. 31 00:01:35,580 --> 00:01:39,250 Instead, everything here is handled with client-side, 32 00:01:39,250 --> 00:01:42,300 with browser-side JavaScript. 33 00:01:42,300 --> 00:01:44,420 And once we get those names, of course, 34 00:01:44,420 --> 00:01:47,440 the most important part of the site 35 00:01:47,440 --> 00:01:49,890 will be the game itself. 36 00:01:49,890 --> 00:01:53,610 And here we have automatically switching turns 37 00:01:53,610 --> 00:01:55,350 between these two players. 38 00:01:55,350 --> 00:01:58,240 And then we can, well, click on the field 39 00:01:58,240 --> 00:02:00,590 where we want to place our symbol. 40 00:02:00,590 --> 00:02:03,620 Once we did that, it switches to the other player. 41 00:02:03,620 --> 00:02:07,310 And then we either end the game with a draw, 42 00:02:07,310 --> 00:02:11,080 if no player manages to get three in a row, 43 00:02:11,080 --> 00:02:12,920 or if one of the two players 44 00:02:12,920 --> 00:02:15,780 manages to get three in a row, of course, 45 00:02:15,780 --> 00:02:18,513 that player wins and we can then start a new game, 46 00:02:18,513 --> 00:02:20,483 thereafter if you want to. 47 00:02:21,770 --> 00:02:25,880 Now as I said before, all the logic for this game 48 00:02:25,880 --> 00:02:28,660 and for updating what we see on the page, 49 00:02:28,660 --> 00:02:32,210 for evaluating whether we have a winner or not, 50 00:02:32,210 --> 00:02:35,230 all of that will be driven by JavaScript. 51 00:02:35,230 --> 00:02:37,750 And therefore in this course section, 52 00:02:37,750 --> 00:02:40,910 we are going to apply all these things 53 00:02:40,910 --> 00:02:42,602 we learned about JavaScript 54 00:02:42,602 --> 00:02:47,602 in conjunction with what we already know about HTML and CSS. 55 00:02:48,550 --> 00:02:51,840 But the focus definitely is on Java script. 56 00:02:51,840 --> 00:02:55,730 Now as with all those milestone projects, 57 00:02:55,730 --> 00:03:00,100 this section here is generally optional, 58 00:03:00,100 --> 00:03:02,930 as its main goal and its main focus 59 00:03:02,930 --> 00:03:05,800 is that we just apply what we already know, 60 00:03:05,800 --> 00:03:07,630 that we practice what we learned, 61 00:03:07,630 --> 00:03:11,120 and that you see all those concepts in the context 62 00:03:11,120 --> 00:03:13,583 of a more realistic project. 63 00:03:14,470 --> 00:03:18,870 But there also is some new content in this section, 64 00:03:18,870 --> 00:03:21,890 some concepts, which simply make more sense 65 00:03:21,890 --> 00:03:25,570 to be introduced in such a real project. 66 00:03:25,570 --> 00:03:29,710 And to be precise, there are two main new concepts 67 00:03:29,710 --> 00:03:31,490 we are going to dive in. 68 00:03:31,490 --> 00:03:34,420 One of them will be handling the form submission 69 00:03:34,420 --> 00:03:36,780 with JavaScript. 70 00:03:36,780 --> 00:03:41,287 So preventing that default of sending an HTTP request 71 00:03:41,287 --> 00:03:44,220 to a backend, which we don't have yet, 72 00:03:44,220 --> 00:03:46,080 that will be one thing. 73 00:03:46,080 --> 00:03:47,880 And in conjunction with that, 74 00:03:47,880 --> 00:03:50,530 we are also going to learn about a different way 75 00:03:50,530 --> 00:03:53,490 of creating JavaScript objects. 76 00:03:53,490 --> 00:03:58,170 And the other main concept or JavaScript feature 77 00:03:58,170 --> 00:04:00,560 we are going to dive in, which is new, 78 00:04:00,560 --> 00:04:03,340 will be that we use a certain attribute 79 00:04:03,340 --> 00:04:06,980 that we can add to all HTML elements 80 00:04:06,980 --> 00:04:10,670 that will help us with managing and storing data, 81 00:04:10,670 --> 00:04:14,863 which we need in JavaScript, in our HTML code. 82 00:04:15,950 --> 00:04:18,410 Now if you want to jump to those lectures, 83 00:04:18,410 --> 00:04:21,630 attached, you'll find links to these specific lectures 84 00:04:21,630 --> 00:04:24,690 so that you can still skip the rest of this module 85 00:04:24,690 --> 00:04:27,270 if you are not interested in it right now. 86 00:04:27,270 --> 00:04:30,160 But of course, as always, my strong recommendation 87 00:04:30,160 --> 00:04:33,950 is that you do go through these milestone projects. 88 00:04:33,950 --> 00:04:36,540 And this project here is no exception, 89 00:04:36,540 --> 00:04:39,390 since it is a great chance to practice 90 00:04:39,390 --> 00:04:40,820 all the things you learned, 91 00:04:40,820 --> 00:04:45,193 and to again, see multiple important concepts come together.