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javascript internationalization API
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Taketoshi Aono(青野健利 a.k.a brn)
August 27, 2019
Programming
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880
javascript internationalization API
EcmascriptのInternationalization APIについて
Taketoshi Aono(青野健利 a.k.a brn)
August 27, 2019
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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