1
00:00:00,630 --> 00:00:02,120
Hello and welcome.

2
00:00:02,250 --> 00:00:05,380
Thank you so much for your time today.

3
00:00:06,050 --> 00:00:12,380
In this lecture on Ajax you will learn what Ajax is.

4
00:00:12,510 --> 00:00:18,800
You learn the difference between TTP and hate.

5
00:00:18,810 --> 00:00:20,510
TTP Yes.

6
00:00:20,790 --> 00:00:26,930
You learn what an egg smell his T T P request object is.

7
00:00:27,330 --> 00:00:30,780
You'll learn how Ajax works.

8
00:00:30,930 --> 00:00:36,740
So I'll show you a basic illustration of how Ajax works.

9
00:00:36,840 --> 00:00:39,020
So what is Ajax.

10
00:00:39,120 --> 00:00:53,640
Ajax stands for synchronize javascript and SML Ajax allows you to date parts of a web page without reloading

11
00:00:53,910 --> 00:00:55,890
the entire page.

12
00:00:55,890 --> 00:00:57,220
So we do jacks.

13
00:00:57,330 --> 00:01:04,790
You can update certain parts of your web page without reloading the web page.

14
00:01:04,830 --> 00:01:14,450
The ability to make changes without reloading the web page is what is known as a synchronoss behaviour.

15
00:01:14,460 --> 00:01:15,860
So we pay jacks.

16
00:01:15,870 --> 00:01:26,880
You can exchange small amounts of data with a server behind the scene and make it seem less thus possible

17
00:01:26,880 --> 00:01:29,620
so all these is synchronous behaviour.

18
00:01:29,640 --> 00:01:35,180
Ajax allows changes to go on without reloading.

19
00:01:37,080 --> 00:01:43,360
An example of Ajax is the Google Google Suggest home page.

20
00:01:43,470 --> 00:01:52,400
So for example you are trying to type in a search Ajax For example let's see and try a typing chocolate.

21
00:01:52,470 --> 00:01:56,060
I go see all shop.

22
00:01:56,120 --> 00:01:58,780
All you see is me.

23
00:01:58,890 --> 00:02:00,870
Various suggestions here.

24
00:02:00,930 --> 00:02:06,540
This is done using AJAX So as I am typing it sends a message to the server.

25
00:02:06,750 --> 00:02:12,720
This server cons about and gives me a suggested list of items and printer type.

26
00:02:12,720 --> 00:02:16,280
He does all these without reloading the web.

27
00:02:17,910 --> 00:02:20,350
What is the difference between.

28
00:02:20,380 --> 00:02:23,010
Hey TTP and hey.

29
00:02:23,040 --> 00:02:30,910
T T P S hasted did P sounds for hypertext transfer protocol.

30
00:02:30,960 --> 00:02:41,400
It is a method of transporting information online between web browsers so they hated t.p without the

31
00:02:41,400 --> 00:02:48,540
s is not secured while the his T T P with the case is secure.

32
00:02:48,750 --> 00:02:59,670
So wherever you see his T T P S that that identifies at if he's a secured connection happen between

33
00:02:59,820 --> 00:03:00,910
two browsers.

34
00:03:01,050 --> 00:03:11,360
So the information that is transporter using the TTP S is usually encrypted and secure information.

35
00:03:11,400 --> 00:03:21,670
This is a basic illustration of how the TTP and his TTP put to call works.

36
00:03:21,730 --> 00:03:31,980
So if you're a user here on your Web browser you can transport information via the hey TTP and the information

37
00:03:31,980 --> 00:03:33,790
will not be secured.

38
00:03:33,900 --> 00:03:40,560
So this is normally where you trance where you transferring information via these TTP.

39
00:03:40,760 --> 00:03:49,240
You using the port 80 which is a normal TTP port is an insecure connectionist not secure.

40
00:03:49,470 --> 00:03:57,680
However if you are using an encryption and use it you be using the TTP s.

41
00:03:57,720 --> 00:04:01,840
The S in his TTP makes the connection secure.

42
00:04:02,010 --> 00:04:10,960
Usually with a Hitty t p s it uses a secure connection or four for three and a date.

43
00:04:10,980 --> 00:04:19,500
You can see the blue bit there the data transported is encrypted that is secured using the ss s s l

44
00:04:19,530 --> 00:04:27,330
l certificate the s s l l certificate r what they are.

45
00:04:27,330 --> 00:04:37,500
There are small piece of data files that digit lead binds a cryptographic key to unorganized ancient

46
00:04:37,630 --> 00:04:38,440
details.

47
00:04:38,550 --> 00:04:49,760
So when when it is installed on a web server it activates the padlock and the hated t p s to call transpose

48
00:04:49,770 --> 00:04:52,980
the data over the port 443.

49
00:04:52,980 --> 00:04:59,860
This allows the data to go through a secure unprotected connection.

50
00:05:00,200 --> 00:05:09,050
Forth between web browsers or any data transported using the T T P S is secured and is usually transported

51
00:05:09,250 --> 00:05:10,340
via a port.

52
00:05:10,340 --> 00:05:13,360
Number 4 4 3.

53
00:05:14,030 --> 00:05:17,560
What is and what is ex email.

54
00:05:17,600 --> 00:05:20,810
T P T P requests objet.

55
00:05:20,870 --> 00:05:22,710
This is very important.

56
00:05:22,840 --> 00:05:33,140
Cause this object is what Ajax uses to exchange data with this server behind the scene so all the action

57
00:05:33,140 --> 00:05:37,900
that is perform using AJAX is done behind the scene.

58
00:05:38,040 --> 00:05:40,240
He is in the SML.

59
00:05:40,290 --> 00:05:44,420
T T P request object.

60
00:05:44,670 --> 00:05:53,530
All modern web browsers have a built teen ex email on his t t p requests object.

61
00:05:53,650 --> 00:06:00,230
It is used to exchange data with a web server behind the scene.

62
00:06:00,230 --> 00:06:12,590
This allows the web browser to date parts of a web page without reloading the whole page so the BE behaviour

63
00:06:12,620 --> 00:06:20,090
whereby Ajax is able to obfuscate parts of a web page without reloading.

64
00:06:20,100 --> 00:06:26,400
Web page is known as a synchronoss and he does this using the XM mail.

65
00:06:26,430 --> 00:06:30,360
Hey TTP request object.

66
00:06:30,740 --> 00:06:36,650
So this is an illustration of how Ajax works.

67
00:06:36,650 --> 00:06:39,500
For example you got your web browser here.

68
00:06:39,770 --> 00:06:50,150
When an event occurs in a Web browser for example when you click on the button what happens it creates

69
00:06:50,600 --> 00:06:59,120
an exit mail his TTP request object saw was the object is created.

70
00:06:59,370 --> 00:07:05,960
It then sends a request over the Internet to the web server.

71
00:07:06,470 --> 00:07:18,440
So what happens to web server process this the Hayes TTP request he creates his response and sends the

72
00:07:18,440 --> 00:07:24,540
respond back over the Internet to the web browser.

73
00:07:24,560 --> 00:07:26,550
So what happens.

74
00:07:26,810 --> 00:07:31,900
The response that comes back from the server is processed.

75
00:07:31,940 --> 00:07:38,510
The data is processed using JavaScript and there was javascript processors.

76
00:07:38,520 --> 00:07:41,510
The data headend of dates.

77
00:07:41,510 --> 00:07:42,680
The web page.

78
00:07:43,010 --> 00:07:46,820
Okay so this is how jazz works first.

79
00:07:46,820 --> 00:07:55,520
For me it creates an XM old 80 to be a request object says a request over the Internet to the server.

80
00:07:55,820 --> 00:08:08,810
This process this the TTP request a den creates a response to that request and sends data back to the

81
00:08:08,810 --> 00:08:18,700
server over the Internet so did the data have now sent back and the process data is then transformed

82
00:08:18,740 --> 00:08:21,880
the process interpreted using javascript.

83
00:08:22,040 --> 00:08:29,360
So my script now works with the data that is passed back from the server of days to a web page and then

84
00:08:29,390 --> 00:08:33,190
you see where change is done behind the scenes.

85
00:08:33,380 --> 00:08:42,440
So jabaar Script is key here because it is what is used to process the data that is returned from the

86
00:08:42,440 --> 00:08:43,300
server.

87
00:08:45,280 --> 00:08:55,500
In this lecture up we learnt what a jackass this also learned about hate TTP and his TTP.

88
00:08:55,540 --> 00:08:56,490
Yes.

89
00:08:56,500 --> 00:09:05,080
Well let the differences between the two brutal called arsaell were lent a babik SML his TTP request

90
00:09:05,170 --> 00:09:14,500
object which is what a jackass uses to pass on information to the server.

91
00:09:14,650 --> 00:09:20,080
We saw saw an illustration of how Ajax works.

92
00:09:20,110 --> 00:09:22,310
Thank you for your time.

93
00:09:24,670 --> 00:09:28,350
Please let me know if he's got any questions.

94
00:09:28,390 --> 00:09:30,780
I'll be more than delighted to help.

95
00:09:30,940 --> 00:09:33,580
Or the best wishes and bye for now.