Javascript as a Platform
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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.
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Javascript as a Platform
- 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? Dan, 18 years. My girl is love in JS! My name is Mark, I use JavaScript to hide buttons. 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!
- 6. JavaScript
- 7. Created for JavaScript Web Designers
- 8. Created for JavaScript Weakly Web typed Designers
- 9. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language
- 10. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java
- 11. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Arrays instead of Lists
- 12. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages like Lisp or Scheme than with C or Java Arrays Objects instead of instead of Lists Property Lists
- 13. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages Lambda like Lisp or Scheme functions than with C or Java Arrays Objects instead of instead of Lists Property Lists
- 14. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages Lambda like Lisp or Scheme functions than with C or Java Arrays Objects Functions are instead of instead of First Class Lists Property Lists
- 15. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages Lambda Prototypal like Lisp or Scheme functions inheritance than with C or Java Arrays Objects Functions are instead of instead of First Class Lists Property Lists
- 16. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages Lambda Prototypal Closures like Lisp or Scheme functions inheritance than with C or Java Arrays Objects Functions are instead of instead of First Class Lists Property Lists
- 17. Created for C-like syntax, makes it JavaScript Weakly Web appear like an ordinary typed Designers procedural language Has more in common with functional languages Lambda Prototypal Closures like Lisp or Scheme functions inheritance than with C or Java Arrays Objects Functions are Run-time instead of instead of First Class evaluation Lists Property Lists
- 18. JavaScript is very mutable, it’s very flexible. You can rename things. Brendan Eich Author of JavaScript Douglas Crockford It Is The World's Most Misunderstood Computer Programmer Programming Language
- 19. 1995 Brendan Eich joined Netscape , to create a programming language for browser and base it on Scheme (a Lisp dialect) 2008 Google released V8 engine +10 JavaScript engine prototype (Mocha) 1997 LiveConnect 2 released 1996 Released NN2 with JS support 1998 Rhino engine ECMA Standardization by Norris Boyd released LiveConnect released 1994 1998 2010 Founded Netscape company Mozilla inherited and created one of the first browsers Netscape’s code-base JavaScript is a trademark of and official JavaScript Oracle Corporation management rights
- 20. ≈265 standards Ecma International private non-profit a standards organization of information and communication systems funded in 1961 to standardize computer systems in Europe
- 21. ECMAScript Language Specification ECMA-262 ISO/IEC 16262 MAJOR RELEASE 1.0 1997 Compromise between Netscape and Microsoft EDITORIAL CHANGES 2.0 1998 Align with ISO/IEC 16262 international standard MAJOR RELEASE 3.0 1999 Added regular expressions, try/catch exception COMMUNITY RELEASE 3.1 Yahoo, Microsoft and Google formed group to update of ECMAScript 3 ABANDONED 4.0 Abandoned, due to political differences concerning language complexity MAJOR RELEASE 5.0 2009 Library support for JSON, and more complete reflection EDITORIAL CHANGES 5.1 2011 Align with 3rd version of ISO/IEC 16262:2011 MAJOR RELEASE 6.0 Support classes, semantic and syntactic innovations 72% of functionality is supported by browsers 28% have issues (IE8, FF3.5, OP10.5, Konq 4)
- 22. JavaScript Domain-Specific Language Hidden low-level operations Frameworks Open Source John Resig JS Method Overloading
- 23. Static code analysis Identify potential problems Possible bugs Overcomplicated expressions Security issues Suboptimal code Dead code Language standard violation Duplicate code Code-style disregard 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 Improvements on syntax level compiled Compiled JS will work on any JavaScript runtime Repeating execution speed improvements into JavaScript 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". 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. The goal of Dart is: ultimately to replace JavaScript as the lingua franca of web development on the open web platform.
- 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 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 Compilation into JS optimized for Browser
- 30. C programs compiled to asm.js Asm.js It's just a subset of JavaScript. Mozilla is working on a first implementation for SpiderMonkey.
- 31. Emulators on JavaScript Matt Westcott Ben Firshman Kevin O'Dwyer Emulated ZX Spectrum Emulated Dandy Emulated MS DOS JSSpeccy JSNES JSDosBox ZX Spectrum Dandy DOS
- 32. Linux PC emulator is written in JavaScript. 32 bit x86 compatible CPU 2.6.20 No FPU/MMX/SSE Fabrice Bellard Yauhen Yakimovich Emulated Linux Author of JSModem
- 33. demo
- 34. Thank you Vlad Mysla vlad@pearl.com Technical Lead at LLC Pearl.com