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 internationalization API
Search
Taketoshi Aono(青野健利 a.k.a brn)
August 27, 2019
Programming
0
870
javascript internationalization API
EcmascriptのInternationalization APIについて
Taketoshi Aono(青野健利 a.k.a brn)
August 27, 2019
Tweet
Share
More Decks by Taketoshi Aono(青野健利 a.k.a brn)
See All by Taketoshi Aono(青野健利 a.k.a brn)
document.write再考
brn
6
3k
Parsing Javascript
brn
14
9.2k
JSON & Object Tips
brn
1
480
CA 1Day Youth Bootcamp for Frontend LT
brn
0
930
Modern TypeScript
brn
2
800
javascript - behind the scene
brn
3
730
tc39 proposals
brn
0
870
プロダクト開発とTypeScript
brn
8
2.9k
React-Springでリッチなアニメーション
brn
1
690
Other Decks in Programming
See All in Programming
Proxmoxをまとめて管理できるコンソール作ってみました
karugamo
1
390
ts-morph実践:型を利用するcodemodのテクニック
ypresto
1
530
ワイがおすすめする新潟の食 / 20250530phpconf-niigata-eve
kasacchiful
0
180
PT AI без купюр
v0lka
0
190
TVer iOSチームの共通認識の作り方 - Findy Job LT iOSアプリ開発の裏側 開発組織が向き合う課題とこれから
techtver
PRO
0
700
CQRS/ESのクラスとシステムフロー ~ RailsでフルスクラッチでCQRSESを組んで みたことから得た学び~
suzukimar
0
190
「兵法」から見る質とスピード
ickx
0
140
#QiitaBash TDDでAIに設計イメージを伝える
ryosukedtomita
2
1.6k
型付け力を強化するための Hoogle のすゝめ / Boosting Your Type Mastery with Hoogle
guvalif
1
230
OpenNext + Hono on Cloudflare でイマドキWeb開発スタックを実現する
rokuosan
0
110
コードに語らせよう――自己ドキュメント化が内包する楽しさについて / Let the Code Speak
nrslib
5
910
rbs-traceを使ってWEARで型生成を試してみた After RubyKaigi 2025〜ZOZO、ファインディ、ピクシブ〜 / tried rbs-trace on WEAR
oyamakei
0
1k
Featured
See All Featured
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
106
19k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
331
21k
Speed Design
sergeychernyshev
30
970
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
25
2.8k
Fontdeck: Realign not Redesign
paulrobertlloyd
84
5.5k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Art, The Web, and Tiny UX
lynnandtonic
298
21k
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
Designing Experiences People Love
moore
142
24k
Balancing Empowerment & Direction
lara
1
83
Code Reviewing Like a Champion
maltzj
523
40k
Thoughts on Productivity
jonyablonski
69
4.7k
Transcript
Javascript Internationalization API
Name !CSO 5BLFUPTIJ"POP੨݈ར Occupation 'SPOUFOE%FWFMPQFS1SPEVDU0XOFS Company $ZCFSBHFOU"EUFDI4UVEJP"*.FTTFOHFS OSS $POUSJCVUPSPG7
About IUUQJOGPCODI
&DNB &DNB͕&DNBͱͯ͠*OUFSOBUJPOBMJ[BUJPO"1*ͷ༷ࡦఆΛߦ͍ͬͯΔ &DNBͰ͋Δ&DNBTDSJQU +BWBTDSJQU ͕&DNBΛแ͓ͯ͠Γ &DNBTDSJQUଆʹJOͷ࣮͕ఏڙ͞ΕΔ ͪͳΈʹ+40/&DNBͰఆٛ͞Ε͓ͯΓɺ&DNBʹแ͞Ε͍ͯΔ
*OUM *OUFSOBMJ[BUJPO"1**OUMͱ͍͏άϩʔόϧΦϒδΣΫτΛެ։͓ͯ͠Γ ͦͷΦϒδΣΫτܦ༝Ͱ֤छ"1*ʹΞΫηε͢Δ͜ͱ͕Ͱ͖Δ ࠓͦͷத͔Βදతͳͭͷ"1*Λհ
*OUM$PMMBUPS
*OUM$PMMBUPS *OUM$PMMBUPSओʹจࣈྻൺֱΛߦ͏ͨΊͷ"1* ֤MPDBMFΛؾʹ͠ͳ͕Β6OJDPEFʹجͮ͘ෳࡶͳจࣈൺֱΛߦͬͯ͘ΕΔ
console.log(new Intl.Collator().compare('a', ‘c')); // → a negative value console.log(new Intl.Collator().compare('c',
'a')); // → a positive value console.log(new Intl.Collator().compare('a', 'a')); // → 0
new Intl.Collator('gr',{sensitivity: ‘base'}) .compare(‘ς', 'σ') // → 0 // ΪϦγϟޠͷγάϚจͱจதͰจࣈίʔυ͕ҟͳΔ
// CollatorΛ͏ͱɺsensitivityͷࢦఆͰൺֱͷৄࡉ Λઃఆͯ͜͠ͷΑ͏ͳෳࡶͳൺֱ͕Ͱ͖Δ
*OUM/VNCFS'PSNBU
*OUM/VNCFS'PSNBU *OUM/VNCFS'PSNBUMPDBMFʹԠͨ͡ͷॲཧΛߦ͏"1* EFDJNBMͱDVSSFODZʢ͓ۚʣͷͭʹରԠ
var number = 123456.789; // υΠπͰΧϯϚΛখɺϐϦΦυΛઍ୯Ґͷ۠Γʹ༻͍Δ console.log(new Intl.NumberFormat('de-DE').format(number)); // →
123.456,789 // ΠϯυͰthousands/lakh/crore۠Γ͕༻͍Δ console.log(new Intl.NumberFormat('en-IN').format(number)); // → 1,23,456.789 // nu֦ுΩʔʹΑΓࣈͳͲͷ൪߸ํ͕ࣜ͑Δ console.log(new Intl.NumberFormat(‘zh-Hans-CN-u-nu-hanidec') .format(number)); // → Ұೋࡾ,࢛ޒ.ࣣീ
var number = 123456.789; // ௨՟ϑΥʔϚοτΛ༻͍Δ console.log(new Intl.NumberFormat(‘de-DE', { style:
'currency', currency: 'EUR' } ).format(number)); // → 123.456,79 € console.log(new Intl.NumberFormat(‘ja-JP', { style: 'currency', currency: 'JPY' } ).format(number)); // → ˇ123,457
*OUM1MVSBM3VMFT
*OUM/VNCFS'PSNBU ୯ޠͷෳܗͷॲཧΛߦ͏"1*
var pr = new Intl.PluralRules('en-US'); pr.select(0); // → ‘other’ ෳܗ
pr.select(1); // → ‘one' ୯ܗ pr.select(2); // → ‘other' ෳܗ
const type = pr.select(count); const wordIndices = {'other': 'dogs', 'one':
'dog'}; const verbIndices = {'other': 'are', 'one': 'is'}; console.log( `Your ${indices[type]} ${verbIndices[type]} cute.` ) // count === 1 Your dog is cute. // count === 0 || count > 1 Your dogs are cute.
const ordIndices = { 'one': 'st', 'two': 'nd', 'few': 'rd',
'other': 'th' } const pr = new Intl.PluralRules('en-US', {type: ‘ordinal'} ); const ord = pr.select(3); // → few console.log(`3${ordIndices[ord]}`); // → 3rd
*OUM%BUFUJNF'PSNBU
*OUM%BUFUJNF'PSNBU MPDBMFʹԠͨ͡ͱ࣌ࠁͷॲཧΛߦ͏"1*
new Intl.DateTimeFormat('ja-JP', { year: 'numeric', month: 'long', day: 'numeric', hour:
'numeric', minute: 'numeric', second: 'numeric', hour12: false} ).format(new Date()) // → 20198݄27 16:47:50
new Intl.DateTimeFormat('ja-JP', { month: 'long', day: 'numeric', hour: 'numeric', hour12:
false} ).format(new Date()) // → 8݄27 16࣌
*OUM%BUFUJNF'PSNBU GPSNBU5P1BSUTͱ͍͏ϝιουΛ͏͜ͱͰಠࣗͷϑΥʔϚοτ࣮ݱͰ͖ Δ
new Intl.DateTimeFormat('ja-JP', { year: 'numeric', month: 'long', day: 'numeric', hour:
'numeric', minute: 'numeric', second: 'numeric', hour12: false} ).formatToParts(new Date())
[ { "type": "year", "value": "2019" }, { "type": "literal",
"value": "" }, { "type": "month", "value": "8" }, { "type": "literal", "value": "݄" }, { "type": "day", "value": "27" }, { "type": "literal", "value": " " }, { "type": "hour", "value": "16" }, { "type": "literal", "value": ":" }, { "type": "minute", "value": "57" }, { "type": "literal", "value": ":" }, { "type": "second", "value": "38" } ]
·ͱΊ *&͔Β͑ΔͷͰੋඇ͓ࢼ͠Λ