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
JavaScript: The Past, Present and Future
Search
Kim Joar Bekkelund
April 17, 2015
Programming
0
100
JavaScript: The Past, Present and Future
An introduction to the role of JavaScript. Given to students at NTNU in Trondheim, Norway.
Kim Joar Bekkelund
April 17, 2015
Tweet
Share
More Decks by Kim Joar Bekkelund
See All by Kim Joar Bekkelund
ASTs in JavaScript
kimjoar
0
98
Writing Beautiful JavaScript Tests
kimjoar
12
2.6k
WebSockets and Server-Sent Events
kimjoar
1
240
Patterns of Large-Scale JavaScript Applications
kimjoar
20
1.5k
Patterns of Large-Scale JavaScript Applications
kimjoar
22
2.3k
Enkle JavaScript-abstraksjoner
kimjoar
1
160
Simple JavaScript Abstractions
kimjoar
9
780
Introduksjon til forretningsmodeller
kimjoar
2
340
Other Decks in Programming
See All in Programming
Amazon RDS 向けに提供されている MCP Server と仕組みを調べてみた/jawsug-okayama-2025-aurora-mcp
takahashiikki
1
110
複雑なドメインに挑む.pdf
yukisakai1225
5
1.1k
Cache Me If You Can
ryunen344
1
610
ファインディ株式会社におけるMCP活用とサービス開発
starfish719
0
290
2025 年のコーディングエージェントの現在地とエンジニアの仕事の変化について
azukiazusa1
22
11k
Go言語での実装を通して学ぶLLMファインチューニングの仕組み / fukuokago22-llm-peft
monochromegane
0
120
速いWebフレームワークを作る
yusukebe
5
1.7k
ぬるぬる動かせ! Riveでアニメーション実装🐾
kno3a87
1
210
Vue・React マルチプロダクト開発を支える Vite
andpad
0
110
Kiroで始めるAI-DLC
kaonash
2
580
Ruby Parser progress report 2025
yui_knk
1
420
Flutter with Dart MCP: All You Need - 박제창 2025 I/O Extended Busan
itsmedreamwalker
0
150
Featured
See All Featured
Building Flexible Design Systems
yeseniaperezcruz
328
39k
Faster Mobile Websites
deanohume
309
31k
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.8k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
Agile that works and the tools we love
rasmusluckow
330
21k
Code Review Best Practice
trishagee
70
19k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
187
55k
A designer walks into a library…
pauljervisheath
207
24k
Into the Great Unknown - MozCon
thekraken
40
2k
Raft: Consensus for Rubyists
vanstee
140
7.1k
Music & Morning Musume
bryan
46
6.8k
Building Adaptive Systems
keathley
43
2.7k
Transcript
JavaScript The Past, Present and Future
Kim Joar Bekkelund @kimjoar
[email protected]
Fagleder i JS-plattform Jobbet i
BEKK siden 2011
None
None
It all started at 1995
Brendan Eich + 10 days = JavaScript
What did we do with this new language? (You really
don't want to know)
CUT & PASTE
None
None
None
… and this went on for almost 10 years
2004
2005
What happened?
What happened?
What happened?
What happened?
JavaScript went from nothing to …
"any application that can be written in JavaScript, will eventually
be written in JavaScript." Atwood's Law
JavaScript Where are we now?
We expect more!
None
None
SPA Single-page applications
None
10/90? 50/50? 70/30?
None
None
WebSockets Client Server Set up connection
JavaScript + I/O Single-threaded, non-blocking
None
Node.js in production?
“Assembly language of the web”
None
# Assignment: number = 42 opposite = true # Conditions:
number = -42 if opposite # Functions: square = (x) -> x * x # Arrays: list = [1, 2, 3, 4, 5] # Objects: math = root: Math.sqrt square: square cube: (x) -> x * square x Inspired by Ruby and Python Several features will be added to the next JS version
class Point { x: number; y: number; constructor(x: number, y:
number) { this.x = x; this.y = y; } getDist() { return Math.sqrt( this.x * this.x + this.y * this.y ); } } var p = new Point(3,4); var dist = p.getDst(); console.log("Hypotenuse is: " + dist); Optional static typing. Superset of JS.
data Person = Person { name :: String, age ::
Number } showPerson :: Person -> String showPerson (Person o) = o.name ++ ", aged " ++ show o.age examplePerson :: Person examplePerson = Person { name: "Bonnie", age: 26 } Inspired by Haskell
(ns example (:require [om.core :as om] [om.dom :as dom])) (defn
widget [data owner] (reify om/IRender (render [this] (dom/h1 nil (:text data))))) (om/root widget {:text "Hello world!"} {:target (. js/document (getElementById "my-app"))}) A Lisp for the browser
asm.js Speeding up compiled languages
asm.js Speeding up compiled languages "an extraordinarily optimizable, low-level subset
of JavaScript"
C/C++ -> LLVM -> Emscripten -> asm.js
int f(int i) { return i + 1; } C
function f(i) { i = i|0; return (i + 1)|0; } asm.js
But what happens when you can run C and C++
code in the browser?
None
None
None
millions of lines of C compiled to asm.js/JavaScript running in
a browser !
JavaScript The future
language, apps, ecosystem, VM
LANGUAGE the
ES1 1997 ES2 1998 ES3 1999 ES4 Abandoned ES5 2009
ES6 2015 ES7 est. 2016
Adjustments based on real-world problems
None
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>Datainn</title>
<meta name="description" content=""> <meta name="viewport" content="width=device-width"> <script src="../shared/vendor/proj4js/proj4js-compressed.js"></scr <script src="../shared/vendor/bower_components/underscore/undersco <script src="../shared/vendor/bower_components/jquery/jquery.min.j <script src="../shared/vendor/bower_components/spin.js/spin.js"></ <script src="../shared/vendor/bower_components/angular/angular.js" <script src="../shared/vendor/bower_components/angular-route/angul <script src="../shared/vendor/bower_components/angular-animate/ang <script src="../shared/vendor/bower_components/ng-table/ng-table.j <script src="../shared/vendor/bower_components/moment/moment.js">< <script src="../shared/vendor/bower_components/moment/lang/nb.js"> <script src="../shared/vendor/bower_components/based-on/index.js"> <script src="../shared/vendor/bower_components/poller.js/poller.js <script src="../shared/vendor/bower_components/ee.js/ee.js"></scri <script src="../shared/vendor/bower_components/d3/d3.js"></script> <script src="../shared/vendor/bower_components/nvd3/nv.d3.js"></sc
None
ECOSYSTEM the
None
Cryptography API, Audio API, WebRTC, File API …
60fps, but only one thread Web Workers 60fps, but only
one thread
None
from mostly huge frameworks to thousands of small libraries
None
Rendering to …
WebGL
vimeo.com/105880197 javazone webgl
React Native
None
None
APPS the
None
None
offline first
Full-featured online apps
None
None
Desktop and mobile apps
None
chrome os, windows 8, firefox os JavaScript as a first-class
citizen
We will see more of the backend developers on the
frontend … and that's a great thing!
VM the
Browser = rendering engine + JavaScript engine
Chakra SpiderMonkey JavaScriptCore V8 Nashorn
Super-competitive market Push for new features and better performance
2/3 of native speed on benchmarks emscripten + asm.js
None
Want to learn JS?
None
None
Takk for meg!