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
DenverScript: ES6 and Beyond
Search
Steve Kinney
April 28, 2015
Technology
1
150
DenverScript: ES6 and Beyond
Steve Kinney
April 28, 2015
Tweet
Share
More Decks by Steve Kinney
See All by Steve Kinney
Introduction to Testing
stevekinney
0
72
Web Security, Frontend Masters
stevekinney
0
2.5k
Making Music with the Web Audio API, JSConf Colombia 2023
stevekinney
0
85
React and TypeScript, Turing School
stevekinney
0
320
Redux Workshop, 2021-05-05
stevekinney
2
2.1k
TypeScript and React Utility Types
stevekinney
1
190
A Gentle Introduction to GraphQL Resolvers
stevekinney
1
160
React State
stevekinney
11
10k
React State: useEffect and Custom Hooks
stevekinney
0
240
Other Decks in Technology
See All in Technology
GitHub Copilot の概要
tomokusaba
1
140
Node-RED × MCP 勉強会 vol.1
1ftseabass
PRO
0
170
Prox Industries株式会社 会社紹介資料
proxindustries
0
340
"サービスチーム" での技術選定 / Making Technology Decisions for the Service Team
kaminashi
1
200
使いたいMCPサーバーはWeb APIをラップして自分で作る #QiitaBash
bengo4com
0
1k
モバイル界のMCPを考える
naoto33
0
190
LangChain Interrupt & LangChain Ambassadors meetingレポート
os1ma
2
180
変化する開発、進化する体系時代に適応するソフトウェアエンジニアの知識と考え方(JaSST'25 Kansai)
mizunori
1
260
KubeCon + CloudNativeCon Japan 2025 Recap
ren510dev
1
280
Tech-Verse 2025 Global CTO Session
lycorptech_jp
PRO
0
1k
Snowflake Summit 2025全体振り返り / Snowflake Summit 2025 Overall Review
mtpooh
2
430
Geminiとv0による高速プロトタイピング
shinya337
0
160
Featured
See All Featured
The Cost Of JavaScript in 2023
addyosmani
51
8.5k
The Cult of Friendly URLs
andyhume
79
6.5k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.2k
VelocityConf: Rendering Performance Case Studies
addyosmani
331
24k
How STYLIGHT went responsive
nonsquared
100
5.6k
Building Applications with DynamoDB
mza
95
6.5k
GitHub's CSS Performance
jonrohan
1031
460k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Fantastic passwords and where to find them - at NoRuKo
philnash
51
3.3k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
800
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
940
Side Projects
sachag
455
42k
Transcript
JavaScript: ES6 & Beyond Steve Kinney, @stevekinney
Hi. I'm Steve. @stevekinney |
[email protected]
ECMAScript 1: 1997
ECMAScript 2: 1998
ECMAScript 3: 1999
ECMAScript 4
None
ECMAScript 4
ECMAScript 3.1
ECMAScript 3.1 5: 2007
✨ Harmony ✨
None
ECMAScript 6
ECMAScript 6 2015
The Birth of a Standard • Stage 0 - Strawman
• Stage 1 - Proposal • Stage 2 - Draft • Stage 3 - Candidate • Stage 4 - Finished
So, what's in this fancy new language?
Classes, modules, array comprehension, generators, iterators, promises, tail call optimization,
proxies, string interpolation, unicode support, maps, sets, symbols, new APIs for primitive types, binary and octal literals, slides with too many words on them…
Firming up the foundation of the language.
let's have a little talk about var.
None
None
None
None
None
None
None
let: It's like var but it does the thing you
think it's going to do.
const
Turing students ask: “Hey Steve, what's your least favorite thing
about writing JavaScript?”
I hate string concatenation with the fiery passion of a
thousand burning suns.
None
None
None
None
None
None
Let's play a game.
None
None
None
None
None
None
None
None
None
There are some solutions to this problem, but none of
them are going to make you feel good.
None
None
None
None
Gross.
In ES5, we got Function.prototype.bind.
None
In ES6, we get arrow functions.
None
None
None
None
None
None
None
None
None
None
What's the point of multi-line arrow functions if I need
to return stuff? What gives?
Arrow functions also lexically bind this.
Let's do some refactoring.
None
None
None
None
But, that's not all…
None
None
In which, JavaScript gets some class.
None
None
None
None
None
None
None
None
None
None
This seems brittle. Can we refactor this?
None
None
None
None
None
None
None
None
None
What about inheritance?
None
None
None
None
None
There is still a bit more refactoring that we can
do here.
None
None
None
None
None
None
None
Other goodies: class methods and properties, inheriting from built-in types,
computed method names.
Symbols
None
None
Private Properties
Splat and spread.
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Default Arguments
None
None
Generators
None
None
None
None
None
None
Synchronous-looking Asynchronous Code
None
None
None
None
None
None
Modules
None
None
None
None
None
None
Proxies
None
None
None
None
None
None
None
None
None
None
None
None
None
How long am I going to have to wait until
I can use this stuff?
You can use all of this and more today.
Transpilation.
None
None
The Birth of a Standard • Stage 0 - Strawman
• Stage 1 - Proposal • Stage 2 - Draft • Stage 3 - Candidate • Stage 4 - Finished
None
Thank you! Oh, also: Questions? All the places on the
Internet: @stevekinney Come be our friend and mentor our students. Hire our students: http://people.turing.io/