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Let’s Use More JavaScript, OK?
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describe javascript in a few words? how would you
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Wat @garybernhardt https://www.destroyallsoftware.com/talks/wat
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1 + 3 ! => 4
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"hel" + "lo" ! => "hello"
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[] + [] ! => ""
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{} + {} ! => 0
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typeof 5 ! => Number
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typeof "hello" ! => String
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typeof [1,2,3] ! => Object
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typeof [1,2,3] ! => Object
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typeof null ! => Object
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typeof null ! => Object
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typeof NaN ! => Number
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typeof NaN ! => Number
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! Got a question? ASK TWITTERS!
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JavaScript, the worst invention ever. –Bert Bos computer scientist former W3C chairman CSS Working Group
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The most brittle part of the stack is JavaScript. –Jeremy Keith web evangelist
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{{ JavaScript 18 other languages
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=
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===
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Why?
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READY, SET, HISTORY
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ASSEMBLY
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FORTRAN Formula Translating System
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FORTRAN code example
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COBOL Common Business Oriented Language
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COBOL “Hello World”
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The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense. “ –Edsger Dijkstra, 1975
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ALGOL Algorithmic Language
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ALGOL example code
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LISP List Processing
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LISP: the most intelligent way to misuse a computer. “
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C
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A C program is like a fast dance on a newly waxed dance floor by people carrying razors. “ –Waldi Ravens
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FORTRAN COBOL BASIC ALGOL C LISP Simula Smalltalk C++, PHP, Objective-C, Java Ruby Scheme Self
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LIKEABILITY ADOPTION AVAILABILITY EASE OF USE Likeability doesn’t matter. 1.
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LIKEABILITY ADOPTION AVAILABILITY EASE OF USE Likeability doesn’t matter. 1.
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People hate JavaScript. (They should get over it.)
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! 25 Scheme 27 Lisp 36 Smalltalk ! ?? ALGOL
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! ☔️ 1 C 2 Java 3 PHP 5 C++ 25 Scheme 27 Lisp 36 Smalltalk ! ?? ALGOL
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JavaScript is everywhere. 2. Likeability doesn’t matter. 1.
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JavaScript is 2. Likeability doesn’t matter. 1. JavaScript is awesome. 3.
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FUNCTIONS!!!
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FUNCTIONS!!!
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FUNCTIONS!!!
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FUNCTIONS!!!
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FUNCTIONS!!!
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FUNCTIONS!!!
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FUNCTIONS!!!
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Prototype Inheritance
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1 episode: 10 months 1 batch: 30 days Entire programming language: 10 days
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LiveScript
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LiveScript
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LiveScript Java
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JavaScript JScript
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European Computer Manufacturers Association (ECMA)
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JavaScript JScript ECMAScript
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ES1 (June 1997) ES2 (June 1998) ES3 (December 1999)
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DOM AND THE DARK YEARS OF THE DOM CSS 1 XML RDF HTML 4.0
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Jesse James Garrett 2005
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NOT BAD
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The first time you run $(’.foo’).fadeOut(), you feel like a god damn wizard. “ –Oscar Godson, jQuery Made Me Become A Programmer
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ES5
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ES5 Shim github.com/es-shims/es5-shim
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small reusable libraries
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… 451!
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youtube.com/watch?v=ztspvPYybIY
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http://addyosmani.com/writing-modular-js/
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myproject/ main.js
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myproject/ main.js sayHello.js
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FILE SCOPE sayHello.js
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FILE SCOPE sayHello.js
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main.js
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browserify main.js -o bundle.js $
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myproject/ main.js sayHello.js bundle.js
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Likeability doesn’t matter. 1.
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Likeability doesn’t matter. 1.
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JavaScript is everywhere. 2. Likeability doesn’t matter. 1.
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JavaScript is 2. Likeability doesn’t matter. 1. JavaScript is awesome. 3.
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Rate this talk! bit.ly/psuprogramming THANKS. Follow me/AMA twitter.com/rhodesjason