This document discusses the structure and functionality of databases, back-ends, and front-ends. It also covers the evolution of HTML standards from 1995 to 1999 and JavaScript syntax elements such as variables, data types, operators, and control flow statements like conditionals and loops.

2. DATABASE
BACK-END
FRONT-END

3. DATABASE

4. BACK-END

5. FRONT-END
STRUCTURE PRESENTATION FUNCTIONALITY

6. FRONT-END
PRESENTATION FUNCTIONLITY

7. FRONT-END
FUNCTIONLITY

8. FRONT-END

9. HTML 2 HTML 3.2
1995 1997 1999
HTML 4
HTML 4.1

10. vs

12. 28 15 22 6.0 10

13. +

14. Live Script DHTML
1995 1996 1997 - 2011
JScript
ECMA-262
Java Script

16. +
+
=
=
Back - End
MobileDev
+ = Front- End

19. Imperative
&
Functional
&
Object-Oriented

20. Prototype-Based

22. SYNTAX
&
ELEMENTS

23. VARIABLES

24. var a = 5

25. var a = 5
Variable Scope

26. var a = 5
identifier
value

27. Number
&
String
&
Boolean
Array
&
Function
&
Object

28. Operators

29. Arictmetic Logical Comparison
10 + 1
10 - 2
10 * 2
10 / 2
10 % 2
T && F
T || F
T ^ F
!F
10 == 10
10 != 2
10 > 2
1 < 20

30. Binary Special Assignment
10 | 1
10 & 2
10 ^ 2
10 << 1
10 >> 1
[]
()
?:
{}
=

31. Falsy Values

32. Null
NaN
undefined
false / 0

33. Conditional
Statements

34. Program Flow Condition
TRUE
FALSE ELSE
IF

35. IF (condition) { BODY }
TRUE

36. IF (condition) { BODY }
ELSE { BODY }
TRUE
FALSE

37. SWITCH ( variable ) {
case OPTION : BODY;
break;
case OPTION : BODY;
break;
...
}

38. LOOPS

39. LOOP
Condition
BODY
TRUE

40. WHILE (condition) {
BODY
}
TRUE

41. do {
BODY
} WHILE (condition)
TRUE

42. FOR ( FROM; WHILE; STEP ) {
BODY
}
var i = 0; i < 20 ; i++

43. FOR ( INDEX in OBJECT ) {
BODY
}
COLLECTION