Upgrade to PRO for Only $50/Year—Limited-Time Offer! 🔥
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
920
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
3.1k
Parsing Javascript
brn
14
9.4k
JSON & Object Tips
brn
1
520
CA 1Day Youth Bootcamp for Frontend LT
brn
0
1k
Modern TypeScript
brn
2
840
javascript - behind the scene
brn
3
780
tc39 proposals
brn
0
930
プロダクト開発とTypeScript
brn
8
3k
React-Springでリッチなアニメーション
brn
1
730
Other Decks in Programming
See All in Programming
新卒エンジニアのプルリクエスト with AI駆動
fukunaga2025
0
110
ZOZOにおけるAI活用の現在 ~モバイルアプリ開発でのAI活用状況と事例~
zozotech
PRO
8
4k
AIコードレビューがチームの"文脈"を 読めるようになるまで
marutaku
0
300
Rediscover the Console - SymfonyCon Amsterdam 2025
chalasr
2
130
【CA.ai #3】ワークフローから見直すAIエージェント — 必要な場面と“選ばない”判断
satoaoaka
0
210
dnx で実行できるコマンド、作ってみました
tomohisa
0
130
開発に寄りそう自動テストの実現
goyoki
0
150
Why Kotlin? 電子カルテを Kotlin で開発する理由 / Why Kotlin? at Henry
agatan
2
6.2k
WebRTC と Rust と8K 60fps
tnoho
2
1.9k
宅宅自以為的浪漫:跟 AI 一起為自己辦的研討會寫一個售票系統
eddie
0
470
著者と進める!『AIと個人開発したくなったらまずCursorで要件定義だ!』
yasunacoffee
0
110
関数の挙動書き換える
takatofukui
4
770
Featured
See All Featured
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.3k
Unsuck your backbone
ammeep
671
58k
Thoughts on Productivity
jonyablonski
73
5k
Code Review Best Practice
trishagee
73
19k
For a Future-Friendly Web
brad_frost
180
10k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
659
61k
RailsConf 2023
tenderlove
30
1.3k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
196
69k
Making Projects Easy
brettharned
120
6.5k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
16
1.8k
Rebuilding a faster, lazier Slack
samanthasiow
84
9.3k
Embracing the Ebb and Flow
colly
88
4.9k
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