1 00:00:00,690 --> 00:00:01,980 Welcome back. 2 00:00:02,009 --> 00:00:06,160 Let me show you how I'm going to solve this one if you're able to. 3 00:00:06,180 --> 00:00:06,890 Got it. 4 00:00:06,900 --> 00:00:08,010 Bravo. 5 00:00:08,039 --> 00:00:09,660 If you're able to try it. 6 00:00:09,690 --> 00:00:10,450 Bravo. 7 00:00:10,480 --> 00:00:11,580 But if you couldn't. 8 00:00:11,610 --> 00:00:12,570 Don't worry. 9 00:00:12,600 --> 00:00:17,550 Sit back and let's see how I'm going to solve this particular challenge. 10 00:00:17,820 --> 00:00:21,210 So the first one is let's start for the first one. 11 00:00:21,210 --> 00:00:22,560 So let's start from here. 12 00:00:23,960 --> 00:00:26,490 So I can see the question and my code. 13 00:00:26,510 --> 00:00:33,620 Well, in programming, there is no one way of doing something. 14 00:00:33,710 --> 00:00:41,600 But at the end of the day, the function should perform the particular task that you want the function 15 00:00:41,600 --> 00:00:42,230 to do. 16 00:00:42,770 --> 00:00:49,310 So the first question is that create a function to find the number of words in a string. 17 00:00:49,340 --> 00:00:57,050 And as we see here as before this, what we are doing here, but instead we are going to make use of 18 00:00:57,050 --> 00:01:04,040 a function because for a function we can re-use it and that will help us avoid repetition of code. 19 00:01:04,400 --> 00:01:11,480 So after I create a function, if I want to find a length of a string, I just pass in the string and 20 00:01:11,480 --> 00:01:12,410 I'm good to go. 21 00:01:12,590 --> 00:01:18,590 So let me show you how I'm going to solve this particular challenge. 22 00:01:18,890 --> 00:01:20,630 So this is how I always do. 23 00:01:20,630 --> 00:01:23,080 I call something brainstorming. 24 00:01:23,090 --> 00:01:25,760 I'm going to brainstorm in this particular question. 25 00:01:25,970 --> 00:01:28,670 One First of all, a function. 26 00:01:28,670 --> 00:01:36,620 Find the words in a string so I can declare or I can start with my function name where we can use function, 27 00:01:36,620 --> 00:01:39,440 expression or statement, whatever. 28 00:01:39,440 --> 00:01:44,300 So let me stick to using the normal function or function expression for the one. 29 00:01:44,300 --> 00:01:48,980 For this one, let's say const or I'm inside the same command here, so. 30 00:01:48,980 --> 00:01:49,420 Okay. 31 00:01:50,400 --> 00:01:52,130 Okay, let me bring this one here. 32 00:01:53,330 --> 00:01:53,800 Like that. 33 00:01:53,810 --> 00:01:54,610 Let me see. 34 00:01:54,620 --> 00:01:55,940 Now we see the question. 35 00:01:55,940 --> 00:01:57,170 I remove the. 36 00:01:57,990 --> 00:01:58,920 Of course then very soon. 37 00:01:58,920 --> 00:01:59,460 Yeah. 38 00:01:59,460 --> 00:02:01,140 So if solution number one. 39 00:02:01,140 --> 00:02:04,890 So here as solution one. 40 00:02:05,770 --> 00:02:06,720 For their first one. 41 00:02:06,730 --> 00:02:12,160 So for this function, I'm going to use function statement as function. 42 00:02:12,160 --> 00:02:14,650 And the name is what string? 43 00:02:15,890 --> 00:02:16,420 LAMB. 44 00:02:16,430 --> 00:02:23,000 The name of your function must depict what you are doing and going to be. 45 00:02:23,030 --> 00:02:26,030 My parentheses and my carry braces. 46 00:02:26,420 --> 00:02:28,810 So I'm done with the first one. 47 00:02:28,820 --> 00:02:33,340 Meaning that the function to find the number of characters. 48 00:02:33,340 --> 00:02:35,570 So the name of my function is now this. 49 00:02:35,870 --> 00:02:37,400 Now back to point number two. 50 00:02:37,760 --> 00:02:43,820 The function should take a string as a number meaning and pass in parameters here. 51 00:02:43,820 --> 00:02:45,860 So I pass in a string. 52 00:02:46,400 --> 00:02:51,560 And next is the function should retain the numbers of words in a string. 53 00:02:51,800 --> 00:02:55,730 So it means that return I'll bring return here and now the returns you do. 54 00:02:55,730 --> 00:02:58,430 What if you find the length of the words? 55 00:02:58,430 --> 00:03:00,470 And remember we have done it here. 56 00:03:00,470 --> 00:03:05,030 So the string dot length and that is it. 57 00:03:05,030 --> 00:03:07,280 So here the string are passing. 58 00:03:07,280 --> 00:03:13,280 Here is what I want to have the method on it called length and that is it. 59 00:03:13,280 --> 00:03:17,120 So here I need to invoke the function. 60 00:03:18,210 --> 00:03:20,650 Or same as calling the function. 61 00:03:20,670 --> 00:03:23,140 And here we go, string length. 62 00:03:23,160 --> 00:03:25,870 I want to find the length of this particular string. 63 00:03:25,890 --> 00:03:30,650 Let's say I want to pass in as I knew what take. 64 00:03:34,100 --> 00:03:35,030 Academy. 65 00:03:36,310 --> 00:03:36,970 Yes. 66 00:03:36,970 --> 00:03:39,010 So now let me comment out. 67 00:03:39,010 --> 00:03:41,290 This one's I don't see some console.log here. 68 00:03:41,650 --> 00:03:42,220 Yeah. 69 00:03:42,220 --> 00:03:48,730 So now my function is not returning something from here, but I aim to save there the results coming 70 00:03:48,730 --> 00:03:52,510 back from this function into a variable so that I can see it here. 71 00:03:52,630 --> 00:03:54,310 So I'm going to assign. 72 00:03:55,390 --> 00:03:59,940 A to a variable called results is equal to that. 73 00:03:59,950 --> 00:04:04,840 So if I console.log the result. 74 00:04:05,290 --> 00:04:10,210 Let's see, I see 17 characters in this particular string. 75 00:04:10,210 --> 00:04:17,620 So now this function is reusable so I can copy the same method here, function here, paste it, handles 76 00:04:17,620 --> 00:04:21,670 it down to find how many are present in this one. 77 00:04:21,670 --> 00:04:23,890 Let me call this one as resource two. 78 00:04:24,070 --> 00:04:30,160 I can paste again and let's see how many characters are found in this particular. 79 00:04:30,160 --> 00:04:34,270 I see three so I can console.log these ones together. 80 00:04:34,420 --> 00:04:37,060 So let me pick this one and this one. 81 00:04:37,060 --> 00:04:41,050 So this one going to be resource two and then three. 82 00:04:41,080 --> 00:04:42,730 See that now it's reusable. 83 00:04:42,730 --> 00:04:45,760 So if I save it, the first function gave me this. 84 00:04:45,760 --> 00:04:48,580 The second one given this and third one gave me this. 85 00:04:48,580 --> 00:04:52,000 That is about this challenge. 86 00:04:52,030 --> 00:04:55,210 The next challenge, who is going to be a little bit challenged? 87 00:04:55,210 --> 00:05:01,240 Is this so now I can remove this one from here because now I'm done with that one. 88 00:05:01,660 --> 00:05:04,990 So let me remove this one, this question here. 89 00:05:05,140 --> 00:05:11,050 So let me paste copy this one to this one and now paste it. 90 00:05:11,440 --> 00:05:14,050 And now let me call it a solution to. 91 00:05:14,790 --> 00:05:16,710 Solution two. 92 00:05:16,740 --> 00:05:18,300 So let's deduce this question. 93 00:05:18,300 --> 00:05:19,920 So let me comment out this one. 94 00:05:20,430 --> 00:05:22,170 Avoid some console login. 95 00:05:22,170 --> 00:05:22,950 Perfect. 96 00:05:23,100 --> 00:05:30,960 So again, create a function to check if a string is longer than a certain number of characters. 97 00:05:30,960 --> 00:05:32,730 So I need to write my function name. 98 00:05:32,730 --> 00:05:36,750 So here I can see that function for this one. 99 00:05:36,750 --> 00:05:39,600 Let me use function expression cast. 100 00:05:39,690 --> 00:05:41,700 Then I will say is. 101 00:05:42,740 --> 00:05:45,560 Is longer than. 102 00:05:46,160 --> 00:05:52,970 And then I'll go to my function and my parentheses and my carry braces. 103 00:05:53,000 --> 00:05:54,980 I'm done with the first one. 104 00:05:55,930 --> 00:05:57,310 The next one is the function. 105 00:05:57,310 --> 00:05:58,930 Should we take two arguments? 106 00:05:58,960 --> 00:06:02,380 The first is the first argument is a strain. 107 00:06:02,380 --> 00:06:05,470 So my first argument here is a string. 108 00:06:05,860 --> 00:06:08,110 And the second argument is a number. 109 00:06:08,420 --> 00:06:10,240 You see, it's a number here. 110 00:06:10,450 --> 00:06:17,110 So the difference between arguments and parameters is that when you say arguments, arguments are the 111 00:06:17,110 --> 00:06:21,640 values we pass into a function or point, invoking or calling. 112 00:06:21,700 --> 00:06:25,390 So looking at this one, let me show you here. 113 00:06:25,690 --> 00:06:26,610 Yeah, this one. 114 00:06:26,620 --> 00:06:28,920 So this is what you call parameter. 115 00:06:28,930 --> 00:06:33,040 And this is what we call the argument we are passing in. 116 00:06:33,070 --> 00:06:37,960 If you pass in one, pass in one parameter and pass in as what? 117 00:06:37,960 --> 00:06:38,940 One argument. 118 00:06:38,950 --> 00:06:46,570 So the blueprint always determine how the blueprint of this particular main parameter, if it is to 119 00:06:46,570 --> 00:06:49,060 you, pass in to parameters or argument here. 120 00:06:49,120 --> 00:06:52,990 So now coming down here, we are done with the first one, second one. 121 00:06:53,320 --> 00:07:00,550 The next step is that the function should return true if the string is longer than the number of characters 122 00:07:00,550 --> 00:07:02,380 and false if it is not. 123 00:07:02,620 --> 00:07:07,450 So as soon as I see Eve, meaning I'm going to use Eve statement. 124 00:07:08,350 --> 00:07:10,150 So here, Eve. 125 00:07:10,180 --> 00:07:10,810 Here. 126 00:07:10,960 --> 00:07:13,990 And now I would take the string on that. 127 00:07:13,990 --> 00:07:16,690 I have met a property called length. 128 00:07:17,120 --> 00:07:21,700 It is more than the number that I want to pass in. 129 00:07:21,820 --> 00:07:24,640 Then please return. 130 00:07:26,020 --> 00:07:26,590 Yes. 131 00:07:26,590 --> 00:07:28,300 Return true meaning? 132 00:07:28,300 --> 00:07:29,080 Yes. 133 00:07:29,110 --> 00:07:31,930 That string is more than that. 134 00:07:31,930 --> 00:07:33,130 But else. 135 00:07:34,860 --> 00:07:38,970 I retain force, meaning the characters. 136 00:07:39,000 --> 00:07:42,810 The length of the string is not more than the one we specify. 137 00:07:42,990 --> 00:07:45,660 So now this function is going to be more flexible. 138 00:07:46,020 --> 00:07:53,190 We can determine how many characters do we need, but for the first one we did is always retain the 139 00:07:53,850 --> 00:07:58,900 the number of I mean, the, the number of characters in that string. 140 00:07:58,950 --> 00:08:00,900 So let me show you here for this one. 141 00:08:00,900 --> 00:08:11,670 So when I say is longer, remember, let's see if we see that look at IntelliSense inside we have is 142 00:08:11,670 --> 00:08:19,140 longer than which is my function name and it tells you some I mean, guidelines. 143 00:08:19,140 --> 00:08:21,660 Here is my parentheses. 144 00:08:21,690 --> 00:08:30,440 First of all, it takes in a string c that not be any str this one any and a number can be any any number 145 00:08:30,450 --> 00:08:33,480 and that will retain boolean true or false. 146 00:08:33,510 --> 00:08:36,299 That's how this function is returning. 147 00:08:36,570 --> 00:08:39,360 So I want to find this character. 148 00:08:39,480 --> 00:08:40,950 Let's say hello. 149 00:08:41,340 --> 00:08:43,080 How many characters are present? 150 00:08:43,080 --> 00:08:43,830 And I want to know. 151 00:08:43,830 --> 00:08:49,800 Determine if this length the two characters in this hello is more than. 152 00:08:50,700 --> 00:08:51,300 Three. 153 00:08:51,330 --> 00:08:53,160 Then you should retain. 154 00:08:53,160 --> 00:08:53,850 True. 155 00:08:53,880 --> 00:08:55,620 So for this one. 156 00:08:56,480 --> 00:08:58,290 What do you think is going to return? 157 00:08:58,310 --> 00:08:59,370 True or false? 158 00:08:59,390 --> 00:09:08,170 Remember here, if the length of the text I pass in, which is this one, if it is more than the number, 159 00:09:08,180 --> 00:09:11,570 this one, which is this one, then it's going to return. 160 00:09:11,570 --> 00:09:12,110 True. 161 00:09:12,230 --> 00:09:17,930 But does this if you count this, I mean string here. 162 00:09:17,930 --> 00:09:18,230 Let's see. 163 00:09:18,230 --> 00:09:22,730 We have one, two, three, four, five is. 164 00:09:23,650 --> 00:09:25,020 More than three. 165 00:09:25,030 --> 00:09:25,420 Right? 166 00:09:25,420 --> 00:09:29,170 So this function here will run when I give me false. 167 00:09:29,170 --> 00:09:31,690 So let's see if I save it. 168 00:09:31,690 --> 00:09:33,520 Now, let me assign. 169 00:09:34,310 --> 00:09:38,870 To a variable called resource for short and none. 170 00:09:39,050 --> 00:09:41,880 If I console.log the results. 171 00:09:41,900 --> 00:09:42,680 Let's see. 172 00:09:43,040 --> 00:09:48,430 It is true because the number this one is more than three. 173 00:09:48,440 --> 00:09:51,070 But if I pass in, let's say 90 characters. 174 00:09:51,080 --> 00:09:52,070 No, this. 175 00:09:52,070 --> 00:09:53,860 This text is no more than 90 characters. 176 00:09:53,870 --> 00:09:54,830 So why is that? 177 00:09:54,860 --> 00:09:55,780 So let's see. 178 00:09:55,790 --> 00:09:57,530 Now I get false. 179 00:09:57,770 --> 00:10:01,490 So you see that this one is more flexible than the previous one. 180 00:10:01,790 --> 00:10:07,070 So that's how we can make use of functions and do some logic to make something happen.