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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:02,280 --> 00:00:03,200 Now, that we learned 2 00:00:03,200 --> 00:00:06,000 about some important basics of React, 3 00:00:06,000 --> 00:00:09,560 most importantly, about components and props 4 00:00:09,560 --> 00:00:11,400 It's time to take the next step. 5 00:00:11,400 --> 00:00:14,230 And in this course section, we're going to take 6 00:00:14,230 --> 00:00:19,200 a closer look at user interaction and handling user events 7 00:00:19,200 --> 00:00:23,640 like clicks or input into text fields and so on. 8 00:00:23,640 --> 00:00:26,939 And we're going to have a look at the very important concept 9 00:00:26,939 --> 00:00:31,890 of state in React apps because, you might remember, 10 00:00:31,890 --> 00:00:34,390 that I mentioned earlier in the course 11 00:00:34,390 --> 00:00:38,300 that with React we follow that declarative approach 12 00:00:38,300 --> 00:00:43,150 where we, in the end, define desired target states 13 00:00:43,150 --> 00:00:47,660 and React then takes care about reaching that state. 14 00:00:47,660 --> 00:00:50,140 Well, that is correct and that is already 15 00:00:50,140 --> 00:00:52,750 something we're using but, at the moment, 16 00:00:52,750 --> 00:00:55,200 in the application we built thus far 17 00:00:55,200 --> 00:00:58,190 and with the knowledge we gained, up to this point, 18 00:00:58,190 --> 00:01:01,020 we can only build static applications 19 00:01:01,020 --> 00:01:03,590 where the state never changes, 20 00:01:03,590 --> 00:01:06,960 where we always output exactly the same. 21 00:01:06,960 --> 00:01:09,320 And that's typically not what you want. 22 00:01:09,320 --> 00:01:13,150 You want to have applications which are interactive, 23 00:01:13,150 --> 00:01:16,610 so that you can React to clicks by the user 24 00:01:16,610 --> 00:01:19,510 and to data being entered by the user 25 00:01:19,510 --> 00:01:22,770 and which are reactive so that the application 26 00:01:22,770 --> 00:01:25,570 also changes when certain things happen. 27 00:01:25,570 --> 00:01:28,330 And, therefore, in this course module 28 00:01:28,330 --> 00:01:32,250 we are going to take a look at handling events, 29 00:01:32,250 --> 00:01:35,510 handling user events, like clicks and so on. 30 00:01:35,510 --> 00:01:37,880 And we'll see how that works in React apps, 31 00:01:37,880 --> 00:01:40,760 how we can add such event handlers and more. 32 00:01:40,760 --> 00:01:44,060 And then, we're going to take a look at how we can ensure 33 00:01:44,060 --> 00:01:47,720 that what's visible on the screen changes, 34 00:01:47,720 --> 00:01:50,890 that we reach a different target state. 35 00:01:50,890 --> 00:01:53,270 And for that, we're going to take a closer look 36 00:01:53,270 --> 00:01:56,600 at this state concept in React 37 00:01:56,600 --> 00:01:59,830 and we'll learn how we can manipulate the state 38 00:01:59,830 --> 00:02:04,830 and transition from state A to state B, if we want to. 39 00:02:05,350 --> 00:02:07,940 And, in general, in this section 40 00:02:07,940 --> 00:02:10,690 we're going to learn about a couple of key concepts. 41 00:02:10,690 --> 00:02:13,930 This is a section you absolutely should not skip. 42 00:02:13,930 --> 00:02:16,180 And we're also going to take a closer look 43 00:02:16,180 --> 00:02:18,220 at components and state again. 44 00:02:18,220 --> 00:02:21,720 So, this is another fundamental section covering 45 00:02:21,720 --> 00:02:24,873 core features of React, so let's dive in. 3692

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