1 00:00:00,390 --> 00:00:09,060 So let's see how we can delete properties of an object and we can do it in two ways using the dot notation 2 00:00:09,060 --> 00:00:11,900 and using the bracket notation. 3 00:00:11,910 --> 00:00:14,940 So let me comment this one and my object. 4 00:00:14,940 --> 00:00:17,550 Copy it and let me comment that one. 5 00:00:18,300 --> 00:00:24,450 Then come down here, let's say deleting object property. 6 00:00:27,290 --> 00:00:28,940 Deleting objects. 7 00:00:30,500 --> 00:00:31,400 Properties. 8 00:00:34,810 --> 00:00:35,290 Yes. 9 00:00:35,290 --> 00:00:36,010 So here we go. 10 00:00:36,040 --> 00:00:37,870 Let me paste my object here. 11 00:00:37,990 --> 00:00:40,270 So how can we do it? 12 00:00:40,300 --> 00:00:42,550 So let's use the. 13 00:00:42,580 --> 00:00:46,150 Using the dot. 14 00:00:47,320 --> 00:00:48,270 In rotation. 15 00:00:50,290 --> 00:00:50,890 Let's see. 16 00:00:50,920 --> 00:00:55,270 So let's say delete the person. 17 00:00:55,310 --> 00:01:02,710 Okay, let me say let me add some more confidential property, for example, is what? 18 00:01:03,520 --> 00:01:04,959 Let's see. 19 00:01:05,860 --> 00:01:06,400 Okay. 20 00:01:06,430 --> 00:01:06,950 It's okay. 21 00:01:06,970 --> 00:01:08,410 I don't want to be more personal here. 22 00:01:08,890 --> 00:01:09,540 So delete the. 23 00:01:09,580 --> 00:01:11,860 Delete the H, the H property. 24 00:01:12,340 --> 00:01:14,320 The H property. 25 00:01:15,310 --> 00:01:15,940 Yes. 26 00:01:16,150 --> 00:01:16,440 Good. 27 00:01:16,450 --> 00:01:20,980 So all what we need is you bring in delete. 28 00:01:21,010 --> 00:01:24,520 This is a special keyword in JavaScript. 29 00:01:24,730 --> 00:01:26,710 Delete as that. 30 00:01:27,160 --> 00:01:30,190 This variable is known as who made it. 31 00:01:30,190 --> 00:01:32,290 So name it as delete. 32 00:01:32,590 --> 00:01:34,110 And then what do you want? 33 00:01:34,130 --> 00:01:34,720 Delete. 34 00:01:35,170 --> 00:01:39,160 So I will take the person dart edge. 35 00:01:40,300 --> 00:01:41,140 That is it. 36 00:01:41,440 --> 00:01:43,120 So I have deleted it. 37 00:01:43,120 --> 00:01:54,940 So if I check my console here, then if I search for person record, do I have h init h is gone. 38 00:01:55,090 --> 00:02:01,270 It's nowhere to be found, but h is here in the original array, in the original object. 39 00:02:01,570 --> 00:02:02,350 You see that? 40 00:02:02,530 --> 00:02:10,660 So even after this one, one good thing you need to bear in mind understand why objects are parsed by 41 00:02:10,660 --> 00:02:16,030 reference is that if we see that we have deleted this h. 42 00:02:16,250 --> 00:02:16,830 Okay. 43 00:02:16,840 --> 00:02:27,460 So if I console.log again, this person are not able to see the H because behind the scene it has remove 44 00:02:27,460 --> 00:02:28,210 it from here. 45 00:02:28,540 --> 00:02:30,220 That is one method. 46 00:02:30,580 --> 00:02:34,690 What about using the bracket notation? 47 00:02:35,440 --> 00:02:38,470 So using the bracket. 48 00:02:40,590 --> 00:02:50,220 Notation also asks you bring delete and then person square bracket single or double code and let's say 49 00:02:50,250 --> 00:02:52,110 hobbies remove that. 50 00:02:52,110 --> 00:02:57,960 So let me comment this one out here and now let's see, check the person. 51 00:02:57,990 --> 00:02:59,520 Do we have hobbies in it? 52 00:03:00,340 --> 00:03:00,910 No. 53 00:03:00,940 --> 00:03:03,130 Everything is gone forever. 54 00:03:03,550 --> 00:03:07,900 So you may be asking, what are some of the use cases? 55 00:03:08,110 --> 00:03:08,380 Okay. 56 00:03:08,610 --> 00:03:14,500 Let me show you one thing here we can say is admit to true. 57 00:03:15,040 --> 00:03:29,150 And then let's say that the person let me say starters, for example, let's say A is not verify. 58 00:03:29,200 --> 00:03:30,880 Okay, let's say not. 59 00:03:31,790 --> 00:03:32,870 Verify. 60 00:03:34,110 --> 00:03:43,800 So we can make a logic that where you want to check inside this object, a person object, if the person 61 00:03:43,800 --> 00:03:50,340 status is not verified, then we are going to remove this property called is admin. 62 00:03:51,500 --> 00:03:52,410 It's admin. 63 00:03:52,430 --> 00:03:57,170 So that is why we need method to make something like this happen. 64 00:03:57,650 --> 00:04:04,940 So in this video, I'm going to show you how we can add our custom methods to object so that we can 65 00:04:04,940 --> 00:04:09,860 do more logic in any way that we want.