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Let's Use More JavaScript, OK?
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Jason Rhodes
June 10, 2014
Programming
1
200
Let's Use More JavaScript, OK?
Presentation given at Penn State Web Conference in June 2014.
Jason Rhodes
June 10, 2014
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Transcript
Let’s Use More JavaScript, OK?
describe javascript in a few words? how would you
None
Wat @garybernhardt https://www.destroyallsoftware.com/talks/wat
1 + 3 ! => 4
"hel" + "lo" ! => "hello"
[] + [] ! => ""
{} + {} ! => 0
None
typeof 5 ! => Number
typeof "hello" ! => String
typeof [1,2,3] ! => Object
typeof [1,2,3] ! => Object
typeof null ! => Object
typeof null ! => Object
None
typeof NaN ! => Number
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
=
===
Why?
READY, SET, HISTORY
ASSEMBLY
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FORTRAN Formula Translating System
None
FORTRAN code example
COBOL Common Business Oriented Language
COBOL “Hello World”
The use of COBOL cripples the mind; its teaching should,
therefore, be regarded as a criminal offense. “ –Edsger Dijkstra, 1975
ALGOL Algorithmic Language
ALGOL example code
LISP List Processing
LISP: the most intelligent way to misuse a computer. “
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
FORTRAN COBOL BASIC ALGOL C LISP Simula Smalltalk C++, PHP,
Objective-C, Java Ruby Scheme Self
LIKEABILITY ADOPTION AVAILABILITY EASE OF USE Likeability doesn’t matter. 1.
LIKEABILITY ADOPTION AVAILABILITY EASE OF USE Likeability doesn’t matter. 1.
People hate JavaScript. (They should get over it.)
! 25 Scheme 27 Lisp 36 Smalltalk ! ?? ALGOL
! ☔️ 1 C 2 Java 3 PHP 5 C++
25 Scheme 27 Lisp 36 Smalltalk ! ?? ALGOL
JavaScript is everywhere. 2. Likeability doesn’t matter. 1.
JavaScript is 2. Likeability doesn’t matter. 1. JavaScript is awesome.
3.
FUNCTIONS!!!
FUNCTIONS!!!
FUNCTIONS!!!
FUNCTIONS!!!
FUNCTIONS!!!
FUNCTIONS!!!
FUNCTIONS!!!
Prototype Inheritance
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1 episode: 10 months 1 batch: 30 days Entire programming
language: 10 days
LiveScript
LiveScript
LiveScript Java
JavaScript JScript
European Computer Manufacturers Association (ECMA)
JavaScript JScript ECMAScript
ES1 (June 1997) ES2 (June 1998) ES3 (December 1999)
DOM AND THE DARK YEARS OF THE DOM CSS 1
XML RDF HTML 4.0
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
ES5 Shim github.com/es-shims/es5-shim
small reusable libraries
… 451!
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youtube.com/watch?v=ztspvPYybIY
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http://addyosmani.com/writing-modular-js/
None
myproject/ main.js
myproject/ main.js sayHello.js
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None
FILE SCOPE sayHello.js
FILE SCOPE sayHello.js
main.js
None
None
browserify main.js -o bundle.js $
myproject/ main.js sayHello.js bundle.js
None
None
None
None
None
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Likeability doesn’t matter. 1.
Likeability doesn’t matter. 1.
JavaScript is everywhere. 2. Likeability doesn’t matter. 1.
None
None
JavaScript is 2. Likeability doesn’t matter. 1. JavaScript is awesome.
3.
None
None
None
None
None
Rate this talk! bit.ly/psuprogramming THANKS. Follow me/AMA twitter.com/rhodesjason