Javascript

&

CoffeeScript


TimNew


Brief History of Javascript


  • Netscape (Mozilla)
  • DOM (DHTML)
  • LiveScript (Navigator 2.0)
  • Brendan Eich in 10 days
  • Renamed to JavaScript (Marketing)

The Facts of Javascript

  • Brendan Eich: A Lisp Guru
    • Intension: Functional Language
    • Requirement: Java-like Object Oriented Language
    • Result: JavaScript

  • Except the name, NOTHING related to Java
  • Syntax inspired by C
  • Philosophy borrowed from Scheme
  • Object System learnt from SELF
    • Prototype vs Class-Instance
  • Regular Expression from Perl
  • Prototype in 10 days -> Design Flaws


Facts



JavaScript is Functional, not Object Oriented


JavaScript is the binary of the web
                                             - Gerard Braad

COFFEE SCRIPT


  • Just JavaScript
  • With Syntactic Sugar
  • Best Workaround to Javascript Flaws
    • Class System
    • == & ===
    • for each
    • this
    • ...

CoffeeScript vs TypeScript

  • CoffeeScript is prior than TypeScript
    • Widely used vs rarely used
    • Widely supported vs a few options

  • Twisting PROTOTYPE back to Class-Instance
    • Class -> Syntactic Sugar
    • Type ? -> Static Check!
    • Module?? -> Import 
    • Interface??? -> For what?
    • Generic????  -> WTF!!!!
    • Type ins't everything, definition for $()
    • Feature lost after compiled


Why NOT Type Script


  • Microsoft C# over Javascript Runtime 
    • Visual Studio 2012
    • Windows
    • Open sourced in Microsoft Way

  • Mess toolchain  
    • tsc, typestring?  
    • gulp-tsc, gulp-typescript-compiler, gulp-typescript  


Why NOT Type Script


  • Not Transparent
      • Module (Not file equivalent)
      • Hidden Polyfill
        • this pointer
      • bad interoperability 
  • Write JavaScript as C#
      • Syntax never matters, Design does!
      • C# design in Javascript syntax
  • Sorry Anders, not this time, it goes too far



THANKS


TimNew
http://timnew.github.io
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