Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
The Book Nerd's Guide to JavaScript
Search
Angus Croll
November 17, 2014
Technology
14
4.2k
The Book Nerd's Guide to JavaScript
Given at DotJS, Paris on 17th November 2014
Angus Croll
November 17, 2014
Tweet
Share
More Decks by Angus Croll
See All by Angus Croll
Stop being Perfect
anguscroll
11
1.5k
ES6 Uncensored
anguscroll
72
12k
Learning to Fly — Twitter Flight and Mixins
anguscroll
23
4.5k
JavaScript is Literature is JavaScript
anguscroll
21
3.3k
The Politics of JavaScript
anguscroll
122
23k
Parlez-Vous JavaScript
anguscroll
33
6.3k
Break all the Rulez
anguscroll
42
15k
How we Learned to Stop Worrying and Love JavaScript
anguscroll
90
21k
Other Decks in Technology
See All in Technology
Swiftの “private” を テストする / Testing Swift "private"
yutailang0119
0
130
オブザーバビリティの観点でみるAWS / AWS from observability perspective
ymotongpoo
9
1.6k
Visualize, Visualize, Visualize and rclone
tomoaki0705
6
9.8k
エンジニアの育成を支える爆速フィードバック文化
sansantech
PRO
3
1.1k
地方拠点で エンジニアリングマネージャーってできるの? 〜地方という制約を楽しむオーナーシップとコミュニティ作り〜
1coin
1
240
TAMとre:Capセキュリティ編 〜拡張脅威検出デモを添えて〜
fujiihda
2
340
RSNA2024振り返り
nanachi
0
600
RECRUIT TECH CONFERENCE 2025 プレイベント【高橋】
recruitengineers
PRO
0
170
管理者しか知らないOutlookの裏側のAIを覗く#AzureTravelers
hirotomotaguchi
2
490
SA Night #2 FinatextのSA思想/SA Night #2 Finatext session
satoshiimai
1
150
レビューを増やしつつ 高評価維持するテクニック
tsuzuki817
1
780
Windows の新しい管理者保護モード
murachiakira
0
130
Featured
See All Featured
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
28
9.3k
Speed Design
sergeychernyshev
27
800
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
226
22k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
133
33k
Documentation Writing (for coders)
carmenintech
67
4.6k
Mobile First: as difficult as doing things right
swwweet
223
9.3k
Making the Leap to Tech Lead
cromwellryan
133
9.1k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.1k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.4k
The MySQL Ecosystem @ GitHub 2015
samlambert
250
12k
Git: the NoSQL Database
bkeepers
PRO
427
64k
Thoughts on Productivity
jonyablonski
69
4.5k
Transcript
A Book Nerd’s Guide to JavaScript @angustweets
None
Practical, Useful, Mind Numbingly Boring Nonsensical Work of Genius
What can Literature teach us about Programming?
Great literature is the creation of open minds As programmers
our focus can be very narrow
We’re encouraged to follow only one style…
Actual excerpts from: Google Style Guide AirBnb Style Guide JavaScript
Garden
None
None
We’re left with only one way to get from A
to B :(
None
None
Literature is about embracing the entire language
When programmers embrace the entire language we get choices…
None
None
"There are indeed many ways to do the same thing
in JS. That's one of the beauties of the language" - Peter van der Zee (@kuvos)
None
None
(at least until the JavaScript Police get here)
None
None
Perhaps most importantly…
…Open Minds keep JavaScript fun.
This one just follows The Good Parts These two learn
by experiment
As programmers we’re not encouraged to experiment
Yet experiment is what keeps JavaScript alive
“You need a lot of bad code to write good
code” - Substack (dotJS 2014)
‣ if(!!x) ‣ fn && fn() ‣ immediately invoked functions
‣ module pattern ‣ promises
None
I decided to take experiment to the next level…
None
Wait What?
Twenty Five Authors solving Five JavaScript Problems
Hemingway developed the Iceberg Theory
Here is Hemingway’s Iceberg Theory applied to JavaScript…
(weird shit) (Deceptively Familiar Syntax) (weird shit) JavaScript
(weird shit) JAVA!! (Deceptively Familiar Syntax) (weird shit) JavaScript
(weird shit) JAVA!! But Easier!! (Deceptively Familiar Syntax) (weird shit)
JavaScript
(weird shit) JAVA!! But Easier!! (Deceptively Familiar Syntax) (weird shit)
WTF? JavaScript
Generate Prime Numbers
None
// A succession of creatures mount the stairs;! // each
creature's stride exceeds that of its predecessor! var monstersAscendingAStaircase = function(numberOfSteps) {! var stairs = []; stepsUntrodden = [];! var largestGait = Math.sqrt(numberOfSteps);! for (var i = 2; i <= largestGait; i++) {! if (!stairs[i]) {! for (var j = i * i; j <= numberOfSteps; j += i) {! stairs[j] = 'stomp';! }! }! }! ! // Long-limbed monsters won't tread on prime numbered stairs.! for (var i = 2; i <= numberOfSteps; i++) {! if(!stairs[i]) {! stepsUntrodden.push(i);! }! }! ! // Here, then, is our answer.! return stepsUntrodden;! };!
1 2 3 4 5 6 7 8 9 10
11 12 13 14 2 3 Borges vs. Prime Numbers
None
function downTheRabbitHole(growThisBig) {! var theFullDeck = Array(growThisBig);! var theHatter =
Function('return this/4').call(2*2);! var theMarchHare = Boolean("The frumious Bandersnatch!");! ! var theVerdict = "the white rabbit".split(/the march hare/).slice(theHatter);! ! //into the pool of tears...! eval(theFullDeck.join("if (!theFullDeck[++theHatter]) {\! theMarchHare = 1;\! theVerdict.push(theHatter);\! " + theFullDeck.join("theFullDeck[++theMarchHare * theHatter]=true;") + "}")! );! ! return theVerdict;! }!
function downTheRabbitHole(growThisBig) {! var theFullDeck = Array(growThisBig);! var theHatter =
Function('return this/4').call(2*2);! var theMarchHare = Boolean("The frumious Bandersnatch!");! ! var theVerdict = "the white rabbit".split(/the march hare/).slice(theHatter);! ! //into the pool of tears...! eval(theFullDeck.join("if (!theFullDeck[++theHatter]) {\! theMarchHare = 1;\! theVerdict.push(theHatter);\! " + theFullDeck.join("theFullDeck[++theMarchHare * theHatter]=true;") + "}")! );! ! return theVerdict;! }!
function downTheRabbitHole(growThisBig) {! var theFullDeck = Array(growThisBig);! var theHatter =
Function('return this/4').call(2*2);! var theMarchHare = Boolean("The frumious Bandersnatch!");! ! var theVerdict = "the white rabbit".split(/the march hare/).slice(theHatter);! ! //into the pool of tears...! eval(theFullDeck.join("if (!theFullDeck[++theHatter]) {\! theMarchHare = 1;\! theVerdict.push(theHatter);\! " + theFullDeck.join("theFullDeck[++theMarchHare * theHatter]=true;") + "}")! );! ! return theVerdict;! }!
! new Array(5).join('A' + new Array(5).join('a'));! ! >! !
new Array(5).join("A" + new Array(5).join('a'));! ! > "AaaaaAaaaaAaaaaAaaaa"!
function downTheRabbitHole(growThisBig) {! var theFullDeck = Array(growThisBig);! var theHatter =
Function('return this/4').call(2*2);! var theMarchHare = Boolean("The frumious Bandersnatch!");! ! var theVerdict = "the white rabbit".split(/the march hare/).slice(theHatter);! ! //into the pool of tears...! eval(theFullDeck.join("if (!theFullDeck[++theHatter]) {\! theMarchHare = 1;\! theVerdict.push(theHatter);\! " + theFullDeck.join("theFullDeck[++theMarchHare * theHatter]=true;") + "}")! );! ! return theVerdict;! }!
eval(“if(!theFullDeck[++theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}if(!theFullDeck[+ +theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}if(!theFullDeck[+ +theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+
+theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}if(!theFullDeck[+ +theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}if(!theFullDeck[+ +theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}if(!theFullDeck[+ +theHatter]){theMarchHare=1;theVerdict.push(theHatter);theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;theFullDeck[+ +theMarchHare*theHatter]=true;theFullDeck[++theMarchHare*theHatter]=true;}”);!
eval(“if (!theFullDeck[++theHatter]) {! theMarchHare = 1;! theVerdict.push(theHatter);! theFullDeck[++theMarchHare * theHatter]
= true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! }! if (!theFullDeck[++theHatter]) {! theMarchHare = 1;! theVerdict.push(theHatter);! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! theFullDeck[++theMarchHare * theHatter] = true;! }! if (!theFullDeck[++theHatter]) {! theMarchHare = 1;!
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
Alice in Prime Numberland
So what did we learn?
Playing is Learning
Self-taught programmers are often the best programmers because they get
to make mistakes
Experiment, Play, Have Fun and Keep an Open Mind.
Fin, merci! @angustweets anguscroll.com/hemingway
Books: http://pixgood.com/classic-book-spines.html/ Montparnasse Tower: http://allparisguides.com Eiffel Tower: Yellow Monster: http://content.mycutegraphics.com/
Green Monster: http://wondersofdisney2.yolasite.com/ White Rabbit: http://www.clker.com/ Mad Hatter, March Hare: http://wondersofdisney2.yolasite.com/ Cow, tree, office buildings: clipartpanda.com/ Grass: imgarcade.com/ Lion cubs: https://www.flickr.com/photos/mbiddulph/6947067048/ Cheetah cubs: http://www.bhmpics.com/view-cheetah_cubs_playing-1920x1080.html/ ! Image credits