JavaScript was created in the 1990s at Netscape to enable interactivity in web browsers. It was influenced by languages like Self and Scheme. JavaScript was standardized by ECMA International to foster adoption beyond Netscape Navigator and Internet Explorer. The language has evolved through several standards over the years, with ES6/ES2015 being the latest version adding features like classes, modules, and iterators. New transpilers allow use of upcoming JavaScript features before full browser support.

1. JavaScript History
.

2. the rise of web browsers

3. NCSA
• (National Center for Super Computing Applications)

4. NCSA Mosaic
• 1993 1.0 (1987 )
•
•
• HTTP, FTP, NNTP, Gopher

5. Netscape
• NCSA
•
Mosaic Communications
Corporation
• World Wide Web

6. major member
• James H. Clark(Jim Clark)
• SGI (in 1982)
• SGI NCSA
• Marc Andreessen
• NCSA Mosaic

7. Netscape Navigator
• Mosaic Netscape
• NCSA Netscape
Navigator
• Netscape Navigator 1.0 (Dec, 1994)
• .

8. Microsoft ?

9. NCSA Mosaic
NCSA Mosaic
Netscape Spyglass

10. NCSA Mosaic
Netscape Spyglass
Microsoft
Spyglass Mosaic

11. Internet Explorer

12. 1995

13. Netscape Navigator
Java

14. Problem
• Java Applet
•

15. More Simple

16. with Script

17. Netscape Navigator
Script Language .

18. Developer invitation
• Brendan Eich( )
• SIG( )
• Scheme
(Brendan SICP - Structure and Interpretation of
Computer Programs - .)
• Mozilla CTO

19. Netscape : Java
.

20. Brendan :

21. Execution
•
•
.
• GC

22. Self Scheme
OOP based Prototype Functional Language
JavaScript
Java

23. Brendan

24. Global
Object

26. JavaScript Sun( oracle)
.

28. JavaScript Netscape Navigator

29. Microsoft JavaScript
JScript

30. JScript
• Netscape
• JavaScript

32. Internet Explorer 3.0
• JavaScript

33. Internet Explorer 3.0
• JavaScript

34. Standard
• Netscape “ .”
•

35. W3C?

36. Netscape
.

37. .

41. ECMA
• European Computer Manufacturers
Association
•
• Microsoft .

42. ECMA first
•
•
•
• IEEE754( ...)
• ...
.
http://www.mozilla.org/js/language/E262.pdf

43. ES2
• .
• ISO/IEC
http://www.mozilla.org/js/language/E262-2.pdf

44. ES3
•
• String
• try/catch
•
http://www.ecma-international.org/publications/files/ECMA-ST-ARCH/ECMA-262,%203rd%20edition,%20December%201999.pdf

45. ES3
•
• Adobe
• Max/MSP

46. ES4 ...
• Class
• Interface
• package
• namespace etc...

47. ...

48. Douglas Crockford

49. !!
....
( ! ? ? ?)

51. TC39
ES3.1 ES4
Yahoo!
Microsoft
ect Adobe
Mozilla
etc

53. ECMA 4 is Stop

54. Adobe

55. what?

56. Adobe
• ES4
ActionScript3

59. ES5
• ES3.1
• No New Syntax
• strict
• JSON
•

61. ES-Harmony
• Class ES4
• 2 ?
• ecmascript.org wiki

62. Next Generation JavaScript
• Transpiler
(transcoding compiler - Brendan Eich )
• ECMAScript.next == ES.next
• JS.next

63. Next Generation JavaScript
• CoffeeScript
• Google Traceur

64. Language Features
• Inheritance : classes, traits
• Modules
• Iterators, for-each loop, generators,
deferred functions
• Block-scoped let bindings
• Destructuring assignment
• Parameter handling

65. References
• Mosaic Web Browser
http://en.wikipedia.org/wiki/Mosaic_(web_browser)
• JavaScript
http://en.wikipedia.org/wiki/JavaScript
• Internet Explorer
http://en.wikipedia.org/wiki/Internet_Explorer
• Netscape Navigator
http://en.wikipedia.org/wiki/Netscape_Navigator
• SICP - Strucutre and Interpretation of Computer Programs
http://en.wikipedia.org/wiki/Structure_and_Interpretation_of_Computer_Programs
• Scheme
http://en.wikipedia.org/wiki/Scheme

66. References
• JavaScript History
http://www.howtocreate.co.uk/jshistory.html
• CoffeeScript
http://jashkenas.github.com/coffee-script/
• Tracuer
http://code.google.com/p/traceur-compiler/
• ECMA Harmony proposal
http://wiki.ecmascript.org/doku.php?id=harmony:proposals