WEBVTT 1 00:00:01.420 --> 00:00:04.993 Let's now perform some operations with dates. 2 00:00:06.620 --> 00:00:09.880 So one cool thing that we can do with dates 3 00:00:09.880 --> 00:00:12.410 is to do calculations with them. 4 00:00:12.410 --> 00:00:14.910 For example, we can subtract one date 5 00:00:14.910 --> 00:00:16.470 from another date, 6 00:00:16.470 --> 00:00:19.550 in order to calculate how many days have passed 7 00:00:19.550 --> 00:00:21.890 between the two dates. 8 00:00:21.890 --> 00:00:23.060 And this works, 9 00:00:23.060 --> 00:00:26.110 because whenever we attempt to convert a date 10 00:00:26.110 --> 00:00:29.440 to a number, then the result is going to be the 11 00:00:29.440 --> 00:00:31.830 timestamp in milliseconds. 12 00:00:31.830 --> 00:00:33.320 And with these milliseconds, 13 00:00:33.320 --> 00:00:36.130 we can then perform calculations. 14 00:00:36.130 --> 00:00:40.140 So again, the timestamps are going to be really helpful here 15 00:00:40.140 --> 00:00:42.000 in this situation. 16 00:00:42.000 --> 00:00:44.083 So let's get this date here. 17 00:00:46.460 --> 00:00:50.193 Okay, and let me just demonstrate what I just said. 18 00:00:51.310 --> 00:00:55.433 So I will convert to a number, this feature. 19 00:00:57.430 --> 00:00:59.860 So you see, it worked. 20 00:00:59.860 --> 00:01:01.340 And the same thing is going to happen 21 00:01:01.340 --> 00:01:03.933 when I use the plus operator on it. 22 00:01:05.970 --> 00:01:07.300 So you see. 23 00:01:07.300 --> 00:01:08.210 And so in fact, 24 00:01:08.210 --> 00:01:11.590 that does mean we can now do operations with it. 25 00:01:11.590 --> 00:01:14.140 So if we subtract one date from another, 26 00:01:14.140 --> 00:01:17.260 the result is going to be a number like this. 27 00:01:17.260 --> 00:01:19.660 So a timestamp in milliseconds. 28 00:01:19.660 --> 00:01:21.400 And then we can simply convert 29 00:01:21.400 --> 00:01:24.210 these milliseconds back to Days, 30 00:01:24.210 --> 00:01:25.480 or two hours, 31 00:01:25.480 --> 00:01:27.653 or to whatever we really want. 32 00:01:28.500 --> 00:01:31.080 So let's actually now create a function 33 00:01:31.080 --> 00:01:33.000 that takes in two dates. 34 00:01:33.000 --> 00:01:35.380 And it's going to return the number of days 35 00:01:35.380 --> 00:01:37.773 that pass between these two dates. 36 00:01:39.170 --> 00:01:40.770 So days 37 00:01:40.770 --> 00:01:42.170 past, 38 00:01:42.170 --> 00:01:44.350 is going to be a function, 39 00:01:44.350 --> 00:01:46.790 or let's use an arrow function. 40 00:01:46.790 --> 00:01:48.913 So nice, one liner, 41 00:01:49.920 --> 00:01:51.763 so date one and date two. 42 00:01:53.160 --> 00:01:56.620 And then all we need to do is date two 43 00:01:56.620 --> 00:01:57.453 minus 44 00:01:57.453 --> 00:01:59.490 date, one. 45 00:01:59.490 --> 00:02:01.620 And so let's suppose that 46 00:02:02.790 --> 00:02:04.940 date two is later. 47 00:02:04.940 --> 00:02:06.960 But in case we do not want to suppose 48 00:02:06.960 --> 00:02:10.430 that we can simply take the absolute value here. 49 00:02:10.430 --> 00:02:11.830 And then it doesn't matter which 50 00:02:11.830 --> 00:02:14.653 of the dates here happened first in time. 51 00:02:15.520 --> 00:02:17.440 But for now, let's keep it like this. 52 00:02:17.440 --> 00:02:19.240 So I can show you later what I mean. 53 00:02:20.400 --> 00:02:23.900 So for now, let's actually also return this result. 54 00:02:23.900 --> 00:02:26.150 And then I will just call this function here. 55 00:02:27.880 --> 00:02:31.120 So calc, or actually, it's just calc Well, 56 00:02:31.120 --> 00:02:33.723 it should be calc a called calc. 57 00:02:34.650 --> 00:02:36.343 So this looks a bit nicer. 58 00:02:37.600 --> 00:02:39.403 So calc, days passed. 59 00:02:40.660 --> 00:02:43.293 And then let's just create two dates here. 60 00:02:45.290 --> 00:02:47.673 So let's use this one here. 61 00:02:48.930 --> 00:02:51.023 Maybe make it a little bit simpler. 62 00:02:52.540 --> 00:02:53.990 Let's say here, 63 00:02:53.990 --> 00:02:55.343 April 14. 64 00:02:56.840 --> 00:02:58.480 So this is the first date, 65 00:02:58.480 --> 00:03:00.713 the first that happens in time. 66 00:03:02.290 --> 00:03:04.220 And then the second date, 67 00:03:04.220 --> 00:03:06.060 let's just say, 68 00:03:06.060 --> 00:03:06.893 well, 69 00:03:06.893 --> 00:03:08.620 April 24. 70 00:03:08.620 --> 00:03:10.220 So this then makes it easy for us 71 00:03:10.220 --> 00:03:11.973 to visualize the result. 72 00:03:13.660 --> 00:03:17.578 And let's just call this const days one, 73 00:03:17.578 --> 00:03:19.633 and then login to the console. 74 00:03:23.060 --> 00:03:27.000 Alright, and so this gives us these milliseconds. 75 00:03:27.000 --> 00:03:29.450 And so now we just need to convert them. 76 00:03:29.450 --> 00:03:32.710 And this is similar to what we did, 77 00:03:32.710 --> 00:03:35.300 I think in one of the previous lectures. 78 00:03:35.300 --> 00:03:38.770 So we want to divide by 1000. 79 00:03:38.770 --> 00:03:41.653 And so this converts milliseconds to seconds, 80 00:03:42.650 --> 00:03:44.600 then that times 60, 81 00:03:44.600 --> 00:03:46.460 to convert it to minutes, 82 00:03:46.460 --> 00:03:49.380 then times 60 to convert it to hours, 83 00:03:49.380 --> 00:03:51.460 and then times 24, 84 00:03:51.460 --> 00:03:53.820 which converts it to days. 85 00:03:53.820 --> 00:03:58.820 And again, that's because there are 24 hours in a day. 86 00:03:59.160 --> 00:04:01.710 There are 60 minutes in one hour, 87 00:04:01.710 --> 00:04:04.030 60 seconds in one minute, 88 00:04:04.030 --> 00:04:07.363 and 1000 milliseconds in one second. 89 00:04:08.680 --> 00:04:11.350 And so now we get 10 days. 90 00:04:11.350 --> 00:04:13.250 And that makes sense. 91 00:04:13.250 --> 00:04:14.083 Right? 92 00:04:14.083 --> 00:04:15.650 So from April 24 93 00:04:15.650 --> 00:04:17.400 to April 14, 94 00:04:17.400 --> 00:04:19.500 we have exactly 10 days. 95 00:04:19.500 --> 00:04:21.010 Now what if here, 96 00:04:21.010 --> 00:04:22.210 we pass 97 00:04:22.210 --> 00:04:23.730 four. 98 00:04:23.730 --> 00:04:25.980 So now it's going to be the other way around. 99 00:04:27.190 --> 00:04:29.540 Right, so now we have minus 10. 100 00:04:29.540 --> 00:04:33.207 But we don't want that we always want it to be four 101 00:04:33.207 --> 00:04:35.440 and so that's what I meant earlier, 102 00:04:35.440 --> 00:04:39.030 where we can now simply take the absolute value of this. 103 00:04:39.030 --> 00:04:41.040 So math dot 104 00:04:41.040 --> 00:04:41.873 absolute. 105 00:04:45.070 --> 00:04:47.143 Which of the dates we pass in first. 106 00:04:48.030 --> 00:04:50.120 So if we now put four here 107 00:04:50.120 --> 00:04:52.200 and 14 here, 108 00:04:52.200 --> 00:04:55.030 then the result is still going to be 10. 109 00:04:55.030 --> 00:04:55.863 Great. 110 00:04:55.863 --> 00:04:58.440 So this works just really nice. 111 00:04:58.440 --> 00:05:01.590 Now if you need really pretty sighs calculations, 112 00:05:01.590 --> 00:05:04.390 for example, including time changes due 113 00:05:04.390 --> 00:05:06.520 to daylight saving changes, 114 00:05:06.520 --> 00:05:09.760 and other weird edge cases like that, 115 00:05:09.760 --> 00:05:14.420 then you should use a date library like moment dot js. 116 00:05:14.420 --> 00:05:15.370 And that's a library 117 00:05:15.370 --> 00:05:19.140 that's available for free for all JavaScript developers. 118 00:05:19.140 --> 00:05:21.420 But for something simple like this, 119 00:05:21.420 --> 00:05:23.310 we should be fine. 120 00:05:23.310 --> 00:05:25.230 Now, let's just consider 121 00:05:25.230 --> 00:05:29.200 that one of these days here also has some time. 122 00:05:29.200 --> 00:05:31.660 So let's say in this one here, it's also 10 123 00:05:31.660 --> 00:05:33.200 in the morning, 124 00:05:33.200 --> 00:05:34.470 or 10 125 00:05:34.470 --> 00:05:35.303 hours 126 00:05:35.303 --> 00:05:37.080 and eight minutes, 127 00:05:37.080 --> 00:05:38.260 doesn't really matter. 128 00:05:38.260 --> 00:05:41.450 But let's see what happens to the days now. 129 00:05:41.450 --> 00:05:44.680 And so Indeed, we now get 10.4. 130 00:05:44.680 --> 00:05:46.590 So we might not want that. 131 00:05:46.590 --> 00:05:47.423 And in this case, 132 00:05:47.423 --> 00:05:51.960 we can simply use math dot round on all of this. 133 00:05:51.960 --> 00:05:54.730 Okay, so keep that in mind. 134 00:05:54.730 --> 00:05:57.133 But I will just leave it like this. 135 00:05:58.010 --> 00:05:59.100 Alright. 136 00:05:59.100 --> 00:06:02.720 And now let's actually use this function to format 137 00:06:02.720 --> 00:06:04.920 and display or dates 138 00:06:04.920 --> 00:06:08.680 in a little bit nicer way here in our application. 139 00:06:08.680 --> 00:06:11.280 So basically, what I want to do is, 140 00:06:11.280 --> 00:06:13.860 if one movement happened today, 141 00:06:13.860 --> 00:06:16.490 then here instead of the current date, 142 00:06:16.490 --> 00:06:19.060 I want to display today, 143 00:06:19.060 --> 00:06:21.830 then if it happened yesterday, 144 00:06:21.830 --> 00:06:24.180 I want to write yesterday. 145 00:06:24.180 --> 00:06:27.500 And then if it happened, like a couple of days ago, 146 00:06:27.500 --> 00:06:29.010 then I want this to say, 147 00:06:29.010 --> 00:06:30.300 like two days ago 148 00:06:30.300 --> 00:06:32.000 or five days ago, 149 00:06:32.000 --> 00:06:33.530 instead of the date. 150 00:06:33.530 --> 00:06:35.220 And I'm sure you've seen this kind 151 00:06:35.220 --> 00:06:38.740 of stuff in many web applications that you use 152 00:06:38.740 --> 00:06:39.950 in your daily life. 153 00:06:39.950 --> 00:06:43.030 For example, if you post something on Facebook, 154 00:06:43.030 --> 00:06:45.207 and if you didn't watch it, 155 00:06:45.207 --> 00:06:46.202 the next day, 156 00:06:46.202 --> 00:06:47.890 it will say that you posted it yesterday, 157 00:06:47.890 --> 00:06:50.070 it's not going to display the exact date 158 00:06:50.070 --> 00:06:52.040 if it was just yesterday. 159 00:06:52.040 --> 00:06:54.030 And so that's a really nice use case 160 00:06:54.030 --> 00:06:56.023 of using a function like this. 161 00:06:57.260 --> 00:06:59.033 So let's grab this here. 162 00:07:00.420 --> 00:07:01.533 So I'm copying it. 163 00:07:03.010 --> 00:07:06.990 And then let's go to the display movements function, 164 00:07:06.990 --> 00:07:10.373 where we do actually print the date. 165 00:07:11.760 --> 00:07:15.250 Now, this is all kind of getting out of hand. 166 00:07:15.250 --> 00:07:18.000 So we have a lot of extra code here. 167 00:07:18.000 --> 00:07:19.733 And now we will add even more. 168 00:07:20.840 --> 00:07:22.860 So this function here, 169 00:07:22.860 --> 00:07:24.720 and even some more stuff. 170 00:07:24.720 --> 00:07:26.980 And so let's take all of this here, 171 00:07:26.980 --> 00:07:29.690 and actually create a new function, 172 00:07:29.690 --> 00:07:32.950 which will have the purpose of formatting this. 173 00:07:32.950 --> 00:07:33.783 Alright. 174 00:07:35.060 --> 00:07:36.810 So let's cut this here, 175 00:07:36.810 --> 00:07:40.660 as I just said, and create a function up here, 176 00:07:40.660 --> 00:07:43.210 just to make it a little bit more modular. 177 00:07:43.210 --> 00:07:44.050 All right. 178 00:07:44.050 --> 00:07:46.160 And then we can also reuse this function 179 00:07:46.160 --> 00:07:47.990 in some other place. 180 00:07:47.990 --> 00:07:49.490 Even though right now, 181 00:07:49.490 --> 00:07:50.323 in this case, 182 00:07:50.323 --> 00:07:51.890 we don't need it. 183 00:07:51.890 --> 00:07:53.000 I'm just doing this 184 00:07:53.000 --> 00:07:55.400 to split up the functionality a little bit 185 00:07:55.400 --> 00:07:57.623 across different places in our code. 186 00:07:59.240 --> 00:08:04.240 Okay, so this one receives a date as an input, 187 00:08:04.360 --> 00:08:05.790 and it will return 188 00:08:05.790 --> 00:08:08.150 the formatted date then, 189 00:08:08.150 --> 00:08:08.983 okay. 190 00:08:09.930 --> 00:08:11.770 So I'm copying all of this. 191 00:08:11.770 --> 00:08:15.440 But actually, this one should stay back here, 192 00:08:15.440 --> 00:08:16.683 where we got it from. 193 00:08:18.420 --> 00:08:19.793 And then also, 194 00:08:21.480 --> 00:08:24.630 so this, we need this variable back here, 195 00:08:24.630 --> 00:08:25.713 where it came from. 196 00:08:27.170 --> 00:08:28.240 So display date, 197 00:08:28.240 --> 00:08:31.250 because we use it down here as the value 198 00:08:31.250 --> 00:08:35.630 that we eventually want to print to the user interface. 199 00:08:35.630 --> 00:08:38.940 And so this one should actually be the result 200 00:08:38.940 --> 00:08:41.350 of calling or new function. 201 00:08:41.350 --> 00:08:43.393 So this format, movement date. 202 00:08:44.560 --> 00:08:47.130 So format, movement date, 203 00:08:47.130 --> 00:08:49.690 and here, we pass in the date variable 204 00:08:49.690 --> 00:08:51.463 that we just created up here. 205 00:08:53.012 --> 00:08:54.410 Alright, 206 00:08:54.410 --> 00:08:55.280 and so with this, 207 00:08:55.280 --> 00:08:58.750 we just exported the functionality here 208 00:08:58.750 --> 00:09:00.143 into a new function. 209 00:09:02.430 --> 00:09:04.180 So let's grab this 210 00:09:04.180 --> 00:09:07.453 and put it here at the top of the scope. 211 00:09:08.670 --> 00:09:11.970 And so for now, just to keep this working, 212 00:09:11.970 --> 00:09:13.853 let's return then this value. 213 00:09:15.220 --> 00:09:17.590 All right, and as you see, 214 00:09:17.590 --> 00:09:20.363 and let's just make sure by logging in. 215 00:09:22.070 --> 00:09:23.750 So as you see, 216 00:09:23.750 --> 00:09:26.890 the dates are now still being correctly printed. 217 00:09:26.890 --> 00:09:30.210 So we successfully exported this functionality here 218 00:09:30.210 --> 00:09:33.810 of displaying the dates into this function. 219 00:09:33.810 --> 00:09:37.270 And now we can just implement what I just said. 220 00:09:37.270 --> 00:09:40.400 So basically calculating how many days passed since 221 00:09:40.400 --> 00:09:42.460 the current date and between 222 00:09:42.460 --> 00:09:44.363 the date that we are working with. 223 00:09:46.610 --> 00:09:48.150 All right. 224 00:09:48.150 --> 00:09:49.860 So let's say 225 00:09:49.860 --> 00:09:51.253 const days, 226 00:09:52.370 --> 00:09:53.203 past 227 00:09:54.410 --> 00:09:56.640 and between. 228 00:09:56.640 --> 00:09:57.980 So between right now, 229 00:09:57.980 --> 00:09:59.713 there is a new date. 230 00:10:03.050 --> 00:10:05.000 And then the second date is the date 231 00:10:05.000 --> 00:10:07.393 that we just received here. 232 00:10:09.060 --> 00:10:12.010 So let's just print this to the console to see if it works. 233 00:10:13.950 --> 00:10:14.783 Okay. 234 00:10:16.650 --> 00:10:19.250 So what's all of this here? 235 00:10:19.250 --> 00:10:22.733 So we are printing here actually the wrong thing. 236 00:10:23.910 --> 00:10:25.703 So we want days past. 237 00:10:26.560 --> 00:10:28.423 So that was a mistake, obviously. 238 00:10:29.650 --> 00:10:31.550 But it's still not correct. 239 00:10:31.550 --> 00:10:32.383 And 240 00:10:33.830 --> 00:10:35.693 okay, I have another mistake. 241 00:10:36.540 --> 00:10:38.890 So probably you saw this already. 242 00:10:38.890 --> 00:10:42.863 So I did not even call the calc days past function. 243 00:10:44.050 --> 00:10:45.830 But now it should be good. 244 00:10:45.830 --> 00:10:48.973 And indeed, now we have our days here. 245 00:10:50.010 --> 00:10:51.140 Alright. 246 00:10:51.140 --> 00:10:54.500 And now let's actually round them. 247 00:10:54.500 --> 00:10:57.510 Okay, so that's what I was just saying earlier. 248 00:10:57.510 --> 00:11:00.593 So that we should probably round these dates. 249 00:11:01.780 --> 00:11:04.610 So we already learned how to do that. 250 00:11:04.610 --> 00:11:06.960 So math dot round, 251 00:11:06.960 --> 00:11:07.923 all of this. 252 00:11:09.453 --> 00:11:11.743 And so this looks a lot better now. 253 00:11:12.820 --> 00:11:14.800 Now, let's actually modify 254 00:11:14.800 --> 00:11:16.830 or dates here a little bit. 255 00:11:16.830 --> 00:11:18.570 And you should do the same. 256 00:11:18.570 --> 00:11:21.170 And what I'm going to do is to make 257 00:11:21.170 --> 00:11:25.060 one date yesterday, and then also a date, 258 00:11:25.060 --> 00:11:27.313 like three or four days ago. 259 00:11:29.070 --> 00:11:31.310 So see what's your current date, 260 00:11:31.310 --> 00:11:33.630 and then simply subtract one. 261 00:11:33.630 --> 00:11:35.920 So for me, it's August 2, 262 00:11:35.920 --> 00:11:38.760 so I'm going to use August 1, 263 00:11:38.760 --> 00:11:39.743 and then also, 264 00:11:40.890 --> 00:11:42.110 July 265 00:11:42.110 --> 00:11:43.670 28. 266 00:11:43.670 --> 00:11:46.090 And maybe another July here 267 00:11:46.090 --> 00:11:47.300 25, 268 00:11:47.300 --> 00:11:48.133 or maybe 269 00:11:48.133 --> 00:11:48.966 26. 270 00:11:50.470 --> 00:11:52.790 Okay, it's just so that we can see, 271 00:11:52.790 --> 00:11:56.000 like the yesterday or three days ago, 272 00:11:56.000 --> 00:11:57.970 or something like that. 273 00:11:57.970 --> 00:12:00.530 Alright, so do that now. 274 00:12:00.530 --> 00:12:03.603 And then let's go back here to or function. 275 00:12:04.486 --> 00:12:07.620 Now, then we want to implement some logic based 276 00:12:07.620 --> 00:12:08.873 on this day past. 277 00:12:10.260 --> 00:12:11.720 So if 278 00:12:11.720 --> 00:12:13.550 days past 279 00:12:13.550 --> 00:12:15.650 is zero, 280 00:12:15.650 --> 00:12:18.570 and so basically, that is, 281 00:12:18.570 --> 00:12:20.580 if we do something today, 282 00:12:20.580 --> 00:12:23.040 then actually the string that we want to print 283 00:12:23.040 --> 00:12:27.410 is not the current date, but instead today. 284 00:12:27.410 --> 00:12:30.500 All right, then if one day has passed, 285 00:12:30.500 --> 00:12:33.173 we want to return yesterday. 286 00:12:35.980 --> 00:12:37.070 Okay, 287 00:12:37.070 --> 00:12:38.240 next up, 288 00:12:38.240 --> 00:12:39.630 if 289 00:12:39.630 --> 00:12:43.990 well, let's say if the number of days past 290 00:12:43.990 --> 00:12:46.150 is within the last week. 291 00:12:46.150 --> 00:12:50.130 So that's less or equal seven, 292 00:12:50.130 --> 00:12:52.493 and then we will return the number of days. 293 00:12:54.850 --> 00:12:55.990 So days, 294 00:12:55.990 --> 00:12:56.823 past 295 00:12:58.530 --> 00:12:59.600 days, 296 00:12:59.600 --> 00:13:00.433 ago 297 00:13:01.770 --> 00:13:03.490 and else, 298 00:13:03.490 --> 00:13:05.100 so only if 299 00:13:05.100 --> 00:13:07.630 more than seven days have passed, 300 00:13:07.630 --> 00:13:11.163 only then we want to return the actual date. 301 00:13:13.510 --> 00:13:16.520 Okay, does that make sense? 302 00:13:16.520 --> 00:13:19.580 So let's save and see if it works. 303 00:13:19.580 --> 00:13:21.743 And yes, beautiful. 304 00:13:22.640 --> 00:13:24.850 So that's yesterday, five days ago, 305 00:13:24.850 --> 00:13:27.060 seven days ago. 306 00:13:27.060 --> 00:13:29.943 And then here are the other dates right here. 307 00:13:31.040 --> 00:13:32.670 So that's beautiful. 308 00:13:32.670 --> 00:13:33.960 Great. 309 00:13:33.960 --> 00:13:37.540 Let's now just do something. 310 00:13:37.540 --> 00:13:42.470 And actually, let's transfer like 500 to Jessica Davis. 311 00:13:42.470 --> 00:13:45.100 And that's gonna be the other way around. 312 00:13:45.100 --> 00:13:47.610 Jessica Davis, 500. 313 00:13:47.610 --> 00:13:52.293 And so now we should get one log here with today. 314 00:13:54.670 --> 00:13:57.590 Yes, indeed, there is today. 315 00:13:57.590 --> 00:14:00.330 And now if we log in as Jessica Davis, 316 00:14:00.330 --> 00:14:02.350 we should get the same. 317 00:14:02.350 --> 00:14:05.960 So now we have a deposit coming from today. 318 00:14:05.960 --> 00:14:08.810 And actually, we also have something from seven days ago. 319 00:14:10.000 --> 00:14:12.080 So great, that's amazing. 320 00:14:12.080 --> 00:14:13.310 If you ask me, 321 00:14:13.310 --> 00:14:16.640 that we are capable of now doing something like this, 322 00:14:16.640 --> 00:14:19.280 which looks like a real web application 323 00:14:19.280 --> 00:14:21.410 that you might use every day. 324 00:14:21.410 --> 00:14:22.890 All right. 325 00:14:22.890 --> 00:14:26.820 Now, maybe the logic here is a bit confusing with all 326 00:14:26.820 --> 00:14:28.350 of these returns. 327 00:14:28.350 --> 00:14:30.330 But that's completely normal. 328 00:14:30.330 --> 00:14:35.240 So as once we return, the function stops executing. 329 00:14:35.240 --> 00:14:38.950 And so these other returns will then never be reached. 330 00:14:38.950 --> 00:14:41.540 And so this is a pretty common technique. 331 00:14:41.540 --> 00:14:44.750 And actually, we wouldn't even need this else. 332 00:14:44.750 --> 00:14:46.910 So if I just remove this here, 333 00:14:46.910 --> 00:14:50.100 then all of this code will only be executed 334 00:14:50.100 --> 00:14:53.790 if all of these here are not executed. 335 00:14:53.790 --> 00:14:56.060 So only if all of these here are false. 336 00:14:56.060 --> 00:14:58.403 The rest of the code is even executed. 337 00:15:00.520 --> 00:15:02.623 So you see it works the exact same way. 338 00:15:05.590 --> 00:15:06.510 Awesome. 339 00:15:06.510 --> 00:15:09.330 So our application is even better now. 340 00:15:09.330 --> 00:15:11.260 And in the next two lectures, 341 00:15:11.260 --> 00:15:13.790 we will then do what I mentioned earlier, 342 00:15:13.790 --> 00:15:16.370 which is internationalization, 343 00:15:16.370 --> 00:15:19.930 which is to basically format these dates, 344 00:15:19.930 --> 00:15:21.620 and also these numbers here, 345 00:15:21.620 --> 00:15:24.883 according to each of the countries of these accounts.