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 Future is Now: JavaScript, ES6, and Babel JS
Search
Tim Griesser
February 20, 2015
Technology
7
1.2k
The Future is Now: JavaScript, ES6, and Babel JS
ConFoo, Feb. 2015
http://babeljs.io
Tim Griesser
February 20, 2015
Tweet
Share
More Decks by Tim Griesser
See All by Tim Griesser
SDL as an Artifact: Code-First Schemas in TS & JS
tgriesser
0
130
SDL as an Artifact: Code-First Schemas and GraphQL Nexus
tgriesser
0
190
End-to-End Testing for the Modern Web
tgriesser
0
140
Paving a New Path for GraphQL Schemas
tgriesser
0
93
Embracing the Power of GraphQL
tgriesser
2
900
Redux: A Predictable State Container for JavaScript Apps
tgriesser
2
430
Making Relational Cool Again (or: JavaScript on ACID)
tgriesser
1
420
Data Based JavaScript
tgriesser
1
250
Nodevember - Making Relational Cool Again
tgriesser
1
190
Other Decks in Technology
See All in Technology
SOC2取得の全体像
shonansurvivors
1
400
PLaMo2シリーズのvLLM実装 / PFN LLM セミナー
pfn
PRO
2
990
動画データのポテンシャルを引き出す! Databricks と AI活用への奮闘記(現在進行形)
databricksjapan
0
150
20201008_ファインディ_品質意識を育てる役目は人かAIか___2_.pdf
findy_eventslides
1
460
20250929_QaaS_vol20
mura_shin
0
110
AI駆動開発を推進するためにサービス開発チームで 取り組んでいること
noayaoshiro
0
190
JAZUG 15周年記念 × JAT「AI Agent開発者必見:"今"のOracle技術で拡張するAzure × OCIの共存アーキテクチャ」
shisyu_gaku
0
120
Oracle Base Database Service 技術詳細
oracle4engineer
PRO
11
77k
GA technologiesでのAI-Readyの取り組み@DataOps Night
yuto16
0
270
英語は話せません!それでも海外チームと信頼関係を作るため、対話を重ねた2ヶ月間のまなび
niioka_97
0
120
【Oracle Cloud ウェビナー】クラウド導入に「専用クラウド」という選択肢、Oracle AlloyとOCI Dedicated Region とは
oracle4engineer
PRO
3
110
Shirankedo NOCで見えてきたeduroam/OpenRoaming運用ノウハウと課題 - BAKUCHIKU BANBAN #2
marokiki
0
150
Featured
See All Featured
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
How To Stay Up To Date on Web Technology
chriscoyier
791
250k
A Tale of Four Properties
chriscoyier
160
23k
Producing Creativity
orderedlist
PRO
347
40k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
114
20k
Java REST API Framework Comparison - PWX 2021
mraible
33
8.8k
Faster Mobile Websites
deanohume
310
31k
Why Our Code Smells
bkeepers
PRO
339
57k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.2k
Building Adaptive Systems
keathley
43
2.8k
Transcript
The Future Is Now! JavaScript, ES6 and Traceur @tgriesser
The Future Is Now! JavaScript, ES6 and Traceur @tgriesser ^6-to-5
The Future Is Now! JavaScript, ES6 and @tgriesser
JavaScript isn't the best language…
None
"Future proof" convenience
What? How? Why?
babeljs.io
Terminology
Transpile: Source-to-Source Compilation
None
Transform: Simple syntax conversion
Transform:
Transform:
Polyfill: Providing language features that would expect to be available
natively
None
IE8: Object doesn’t support property or method ‘indexOf’
None
IE8: // 1
Some New Features • Arrow Functions • Strings / Template
Strings • Default Parameters • Rest / Spread Params • Destructuring Assignment • Object literal extensions • Modules • Classes • Symbols • Iterators • Generators • Promises
Arrow Functions
Arrow Functions
Arrow Functions
Arrow Functions
Arrow Functions
Arrow Functions
Arrow Functions
Arrow Functions
New String Functions
New String Functions str.codePointAt: unicode codepoint str.normalize: unicode normalization, not
polyfilled by default - github.com/walling/unorm
Template Strings
Template Strings
Default Parameters
Default Parameters
Rest arguments
Spread Arguments
Destructuring Assignment
Object Literal Extensions
Object Literal Extensions
Object Literal Extensions
Object Literal Extensions
const
let
let
Modules • Unify the experience of separating & including code
from multiple files (modules) • Similar to CommonJS • Can work with various module formats (UMD, AMD)
None
None
Class Syntax • Syntax "Sugar" to Prototype Classes • Sets
up proper inheritance chain • Reference inherited methods with super.methodName() • Cannot have prototype or static props
• No static or prototype properties • Getters & setters
will only work in IE 9+ Class Syntax
Class Syntax • No static or prototype properties • Getters
& setters will only work in IE 9+
Symbol() • New primitive type, unique • Access control for
property state • Also used for new protocols "Symbol.iterator"
Symbols • No static or prototype properties • Getters &
setters will only work in IE 9+
Symbols • No static or prototype properties • Getters &
setters will only work in IE 9+
Iterators • Ability to treat any value as a collection
with a standard API • Allows for use with for-of loop
Iterators
Iterators
Iterators
Promises, Generators • Simplify Async (callback hell)
Promises, Generators • Simplify Async (callback hell)
Promises, Generators • Simplify Async (callback hell) • Promises: like
async try / catch in JavaScript • Generators: Async / Await • Utilize iterators
Kangax compat table
How to Get Started?
Try it out
In the Browser
Node.js
None
Suggestions for Adoption • Introduce into test suites • Gradually
introduce different new features • Check support if you have questions
Support:
June 18, 2015 "…when the ECMA General Assembly will vote
on and approve the 6th edition of Ecma-262 and usher in the next era of JavaScript." http://bocoup.com/weblog/stabilizing-es6/
None
@tgriesser Questions?