1 00:00:00,510 --> 00:00:01,320 All right. 2 00:00:01,650 --> 00:00:04,170 Let's see how to solve this challenge. 3 00:00:04,620 --> 00:00:13,050 Well, write a function that takes an array of words and retains a new array with all the words that 4 00:00:13,050 --> 00:00:14,760 are three letters or shorter. 5 00:00:14,790 --> 00:00:15,960 So here we go. 6 00:00:16,170 --> 00:00:17,400 My solution. 7 00:00:19,300 --> 00:00:23,320 So accounts let me have my array data here counts. 8 00:00:23,320 --> 00:00:26,770 Array data here is equal to. 9 00:00:28,670 --> 00:00:30,050 Supposed to be strange, right? 10 00:00:30,100 --> 00:00:31,870 So I would say not. 11 00:00:33,430 --> 00:00:36,820 JS Then I would say express. 12 00:00:40,270 --> 00:00:41,940 Express. 13 00:00:41,950 --> 00:00:53,290 J.S. Then let's say React and then CSS and then HTML is enough. 14 00:00:53,620 --> 00:01:02,410 So it says that that function is going to retain the arrays that has three letters or shorter. 15 00:01:02,800 --> 00:01:07,720 And I think we have only this one case, which is three letters. 16 00:01:07,840 --> 00:01:09,300 Let's make it as a four. 17 00:01:09,940 --> 00:01:12,010 Let me just say because of the challenge. 18 00:01:12,130 --> 00:01:13,120 So let's see. 19 00:01:13,150 --> 00:01:17,770 So now if it says that returns a new array. 20 00:01:17,800 --> 00:01:20,780 Definitely I'm I to use filter or map. 21 00:01:20,800 --> 00:01:25,750 If you go back to Advent or we talk about map also for now, theater is a way to go. 22 00:01:26,080 --> 00:01:27,310 So here we go. 23 00:01:28,090 --> 00:01:29,710 So const. 24 00:01:30,910 --> 00:01:32,470 Let's find. 25 00:01:34,740 --> 00:01:36,870 Find three. 26 00:01:39,320 --> 00:01:40,880 Find three letters. 27 00:01:40,930 --> 00:01:41,300 Okay. 28 00:01:41,300 --> 00:01:44,300 So here, pass in my array I want to find. 29 00:01:44,300 --> 00:01:47,300 And then here we go so quickly. 30 00:01:47,630 --> 00:01:55,580 So return from this function quickly and I will say the array I'll pass in dot filter. 31 00:01:57,070 --> 00:01:58,750 My callback function. 32 00:02:00,200 --> 00:02:02,270 And then parentheses. 33 00:02:02,270 --> 00:02:03,230 And then. 34 00:02:03,320 --> 00:02:04,250 Here you go. 35 00:02:04,730 --> 00:02:05,620 Why? 36 00:02:05,870 --> 00:02:07,910 I got this error here. 37 00:02:10,690 --> 00:02:11,590 Syntax. 38 00:02:12,720 --> 00:02:13,060 Oh. 39 00:02:14,040 --> 00:02:15,050 Sorry, guys. 40 00:02:15,060 --> 00:02:15,930 My function. 41 00:02:16,290 --> 00:02:18,020 I thought I'm doing a function here. 42 00:02:18,030 --> 00:02:18,780 Sorry, guys. 43 00:02:19,050 --> 00:02:29,880 So inside here, I'm going to have the three elements, the actual element, the index, the index of 44 00:02:29,880 --> 00:02:31,320 it, and the original area. 45 00:02:31,650 --> 00:02:34,140 But for this one, I only care about the elements. 46 00:02:34,140 --> 00:02:39,750 So inside here, return the element in the array. 47 00:02:39,930 --> 00:02:46,140 If the length is less than or equal to three, then it should return that. 48 00:02:46,140 --> 00:02:46,980 So let's see. 49 00:02:47,280 --> 00:02:55,050 So const result is equal to find three letters and I'll pass in my array data above. 50 00:02:55,560 --> 00:02:59,430 So let's say I want to console.log my result. 51 00:03:00,580 --> 00:03:01,270 Have a look. 52 00:03:02,020 --> 00:03:07,660 Now I have CSIS because CSIS is the one that has less than three or equal to three characters. 53 00:03:07,930 --> 00:03:14,080 If I pass in, let's say, JavaScript, the shortcuts for JavaScript, shorthand, syntax, let's say 54 00:03:14,680 --> 00:03:15,640 I have JavaScript. 55 00:03:15,850 --> 00:03:17,980 If I add, let's say. 56 00:03:21,060 --> 00:03:23,940 MongoDB because MongoDB is less than that. 57 00:03:23,940 --> 00:03:25,530 So it's not a big part of it. 58 00:03:25,770 --> 00:03:27,600 So that is it about this challenge guy.