Javascript as a Platform

A story about JavaScript History and its future. I'm talking about language design, ECMA standards, JavaScript code generation, and Virtual Machines made on JS.

Transcript

1. JavaScript as a Platform
2. What you know about JavaScript language restrictions? Five Monkeys Experiment A rule, a regulation, or a procedure, is introduced for a reason. However, after a while, the reason for it is forgotten, but the rule stays. Harry Harlow American psychologist
3. Why people use JavaScript? My name is Mark, I use JavaScript to hide buttons. Dan, 18 years. My girl is love in JS! I’m Mario, JavaScript is all that I learned in my life!
4. Why you really should use it? I use JS, just because it works everywhere!
5. JavaScript language design
6. JavaScript
7. JavaScript Created for Web Designers
8. JavaScript Created for Web Designers Weakly typed
9. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Weakly typed
10. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Weakly typed
11. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Arrays instead of Lists Weakly typed
12. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Arrays instead of Lists Objects instead of PropertyLists Weakly typed
13. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Arrays instead of Lists Objects instead of PropertyLists Lambda functions Weakly typed
14. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Functions are First Class Arrays instead of Lists Objects instead of PropertyLists Lambda functions Weakly typed
15. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Functions are First Class Arrays instead of Lists Objects instead of PropertyLists Lambda functions Prototypal inheritance Weakly typed
16. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Functions are First Class Arrays instead of Lists Objects instead of PropertyLists Closures Lambda functions Prototypal inheritance Weakly typed
17. JavaScript Created for Web Designers C-like syntax, makes it appear like an ordinary procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Functions are First Class Arrays instead of Lists Objects instead of PropertyLists Closures Lambda functions Prototypal inheritance Weakly typed Run-time evaluation
18. JavaScript It Is The World's Most Misunderstood Programming Language is very mutable, it’s very flexible. You can rename things. Douglas Crockford Computer Programmer Brendan Eich Author of JavaScript
19. Founded Netscape company and created one of the first browsers 1994 1997 Brendan Eich joined Netscape , to create a programming language for browser and base it on Scheme (a Lisp dialect) JavaScript is a trademark of Oracle Corporation Mozilla inherited Netscape’s code-base and official JavaScript management rights 1995 1998 Rhino engine by Norris Boyd released 2008 Google released V8 engine JavaScript engine prototype (Mocha) 1996 LiveConnect released ECMA Standardization LiveConnect 2 released 1998 2010 +10 Released NN2 with JS support
20. Ecma International a standards organization of information and communication systems private non-profit funded in 1961 to standardize computer systems in Europe ≈265 standards
21. 1.0 1997 Compromise between Netscape and Microsoft 2.0 1998 Align with ISO/IEC 16262 international standard 3.0 1999 Added regular expressions, try/catch exception 3.1 Yahoo, Microsoft and Google formed group to update of ECMAScript 3 4.0 Abandoned, due to political differences concerning language complexity 5.0 2009 Library support for JSON, and more complete reflection 5.1 2011 Align with 3rd version of ISO/IEC 16262:2011 6.0 Support classes, semantic and syntactic innovations ECMAScript Language Specification ECMA-262 ISO/IEC 16262 EDITORIAL CHANGES EDITORIAL CHANGES MAJOR RELEASE MAJOR RELEASE ABANDONED MAJOR RELEASE MAJOR RELEASE COMMUNITY RELEASE 72% of functionality is supported by browsers 28% have issues (IE8, FF3.5, OP10.5, Konq 4)
22. JavaScript Frameworks Domain-Specific Language Hidden low-level operations Open Source John Resig JS Method Overloading
23. Static code analysis Possible bugs Overcomplicated expressions Security issues Suboptimal code Dead code Language standard violation Duplicate code Code-style disregard Identify potential problems JSLint is a good example of such tool
24. Automatic code corrections Makes JavaScript download and run faster. It is a true compiler for JavaScript. It compiles from JavaScript to better JavaScript. Implemented on Java Speed is very impressive, given that it’s a pure-JavaScript implementation. Implemented on Node.js
25. Languages compiled into JavaScript Improvements on syntax level Compiled JS will work on any JavaScript runtime Repeating execution speed improvements The goal of Dart is: ultimately to replace JavaScript as the lingua franca of web development on the open web platform. TypeScript is for application-scale JavaScript development. Language is a typed superset of JavaScript that compiles to plain JavaScript. Any browser. Any host. Any OS. Open Source. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way. The golden rule of CoffeeScript is: "It's just JavaScript".
26. Classic languages compilation into JS Strongly-Typed JavaScript (STJS) Is an open source JavaScript code generator from a Java source. It is built as a Maven plugin that can be executed after the compilation. GWT These allow you to write AJAX applications in Java and then compile the source to highly optimized JavaScript that runs across all browsers, including mobile browsers for Android and the iPhone. Quicklight The Saltarelle C# to Javascript compiler allows a developer to write C# code and then compile it to Javascript which can be run in any web browser.
27. Emscripten is an LLVM to JavaScript compiler It takes LLVM bitcode (which can be generated from C/C++ using Clang, or any other language that can be converted into LLVM bitcode) and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run). Using Emscripten, you can: - Compile C and C++ code into JavaScript™ and run that on the web - Run code in languages like Python as well, by compiling CPython from C to JavaScript
28. V8 JavaScript Engine Compilation into JS optimized for Browser V8 is Google's open source JavaScript engine. V8 is written in C++ and is used in Google Chrome. V8 compiles JavaScript to native machine code (IA-32, x86-64, ARM, or MIPS CPUs) The V8 assembler is based on the Strongtalk assembler 3 key areas to V8's performance: Fast Property Access Dynamic Machine Code Generation Efficient Garbage Collection
29. JavaScript runs everything
30. Asm.js C programs compiled to asm.js It's just a subset of JavaScript. Mozilla is working on a first implementation for SpiderMonkey.
31. Emulators on JavaScript JSSpeccy ZX Spectrum Matt Westcott Emulated ZX Spectrum Ben Firshman Emulated Dandy JSNES Dandy Kevin O'Dwyer Emulated MS DOS JSDosBox DOS
32. Linux 2.6.20 Fabrice Bellard Emulated Linux PC emulator is written in JavaScript. 32 bit x86 compatible CPU No FPU/MMX/SSE Yauhen Yakimovich Author of JSModem
33. demo
34. Thank you Vlad Mysla vlad@pearl.com Technical Lead at LLC Pearl.com