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3ZVTFJ4BKJLJ!TBKJLJY
"NCJUJPOBOE*NQSPWFNFOUJOJO
UQBD@TUVEZ
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4BKJ3ZVTFJ4BKJLJ
'SPOUFOE%FWFMPQFSBU$ZCP[V
JOD
𝕏
!TBKJLJY
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͕ࣗओʹࢀՃͨ͠8(TFTTJPO
ࣗͷڵຯ*OUM࣌ࠃࡍԽͱ͔ͳͷͰ
w *O8( ϝΠϯ
w *OपΓͷKPJOUNFFUJOHCSFBLPVUTFTTJPO
w 8JOUFS5$ গ͚ͩ͠
w 8FC&EJUJOH গ͚ͩ͠
Έ͍ͨͳײ͡
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͕ࣗओʹࢀՃͨ͠8(TFTTJPO
*O8(ͷ༷ࢠ
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"NCJUJPO
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৺తͩͳͱࢥͬͨఏҊΛͭհ
#SFBLPVU4FTTJPOͳͲͰ݁ߏ৺తͳ༷ఏҊͷ͕ଟ͔ͬͨ
ݸਓతʹ࣌ʹ໘ന͔ͬͨͷ͕ҎԼͷͭ
%0.-PDBMJ[BUJPO
"NPVOU&MFNFOU
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%0.-PDBMJ[BUJPO
จݴϦιʔεΛ؆୯͔ͭॊೈʹಡΈࠐΉఏҊ
w $44ʹࣅͨܗͰར༻͢ΔจݴϦιʔεΛએݴͰ͖ΔΑ͏ʹ͍ͨ͠
w )5.-ଆͰจݴΛ LFZͳͲͰ
ࢦఆ͢Δ͜ͱͰϩʔΧϥΠζ͞ΕΔ
ͬͯݴΘΕͯ🤔
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%0.-PDBMJ[BUJPO Ծ
จݴϦιʔεͷಡΈࠐΈ
w $44ಉ༷ʹಡΈࠐΉ
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%0.-PDBMJ[BUJPO Ծ
จݴͷࢦఆ
w ઐ༻ͷଐੑͰจݴͷLFZҾΛࢦఆͰ͖Δ
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લఏͱͳΔ༷ͨͪ
%0.-PDBMJ[BUJPOΛ࣮ݱ͢ΔͨΊʹؔ࿈͢Δඞཁͳ༷͕͋Δ
w ϝοηʔδࣗମͷߏจͷ༷
w ˠ*$6.FTTBHF'PSNBUW
w ϝοηʔδΛ+4͔Βѻ͏ͨΊͷ༻
w ˠ*OUM.FTTBHF'PSNBU
w ෳͷϝοηʔδΛ·ͱΊͨϦιʔεϑΝΠϧͷ༷
w ˠ.FTTBHF3FTPVSDFT
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*$6.FTTBHF'PSNBU
6OJDPEFͷ$-%35$͕ࡦఆͯ͠ΔจݴϑΥʔϚοτͷ༷
w 6OJDPEFͷग़͢$-%3WͰ4UBCMFʹͳͬͨ
w Α͋͘ΔΑ͏ͳϓϨΠεϗϧμͷຒΊࠐΈҎ֎ʹ
w ϝοηʔδͰͷมએݴɾؔݺͼग़͠
w NBUDIߏจʹΑΔύλʔϯϚον
w ϚʔΫΞοϓॻࣜ
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*$6.FTTBHF'PSNBU
ύλʔϯϚον
ؔݺͼग़͠
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*OUM.FTTBHF'PSNBU
.FTTBHF'PSNBUΛ*OUMͰॻࣜԽͰ͖ΔΑ͏ʹ͢Δ༷
w ݱࡏ&$."4DSJQUͷ4UBHF
const mf = new Intl.MessageFormat("en","Hello {$place}!");
mf.format({ place: "World" });
// ↓
// Hello World!
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ϦιʔεϑΝΠϧͷ༷
.FTTBHF'PSNBUWͰॻ͔Ε֤ͨจݴΛ·ͱΊͨϦιʔεϑΟϧͷܗࣜ
w ݱࡏ8$ͷJO8(Ͱڠ͕ٞਐΜͰ͍Δஈ֊
ݱࡏఏҊ͞Ε͍ͯΔྫ มΘΔՄೳੑଟ͍ʹ͋Γ
@locale en-US
---
one = A plain, simple message.
[section]
two = Another message with a {$placeholder}.
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%0.-PDBMJ[BUJPO
·ͩ·ͩ͜Ε͔Β
w հͨ͠Α͏ʹલఏͱͳΔܾΊͳ͖Ό͍͚ͳ͍༷͕ଟ͍
w Өڹൣғ͘͢͝େ͖͍
w )5.-ͷ༷ʹେ͖͘खΛೖΕΔඞཁ͕͋Δ
w ܾ·ͬͯͳ͍ͱ͜Ζͨ͘͞Μ͋Δ
w ৽͍͠ςϯϓϨʔτΤϯδϯΈ͍ͨͳΒͳ͍ʁΈ͍ͨͳ࣭
w 51"$Ͱʮ·ͣ8(࡞Δͱ͔͜ΒͩͶ͐ʯΈ͍ͨͳ݁ʹͳͬͯͨ
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"NPVOUཁૉ
୯ҐͱΛηοτʹ࣋ͯΔ৽͍͠)5.-ཁૉͷఏҊ
w ୯ҐΛͱηοτͰએݴ͢Δ͜ͱͰҎԼͷΑ͏ͳ͜ͱ͕؆୯ʹ
w ୯Ґม
w ϩʔΧϥΠζ
w ͢ͰʹUJNFཁૉEBUFཁૉ͋Δ͕
w ୯Ґ͕ݶఆతͰ͋Γɺͬͱ֦ுੑͷߴ͍ͷʹ͍ͨ͠
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"NPVOUཁૉ
VOJUWBMVFͱ͍ͬͨଐੑΛ࣋ͭ
w VOJUଐੑ4*୯Ґܥʹ͋ΔΑ͏ͳཧ୯Ґ
w WBMVFଐੑλά͡Όͳ͘WBMVFͱͯ͠ॻ͚Δ
42,2
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&$."4DSJQUͷ"NPVOUͷఏҊ
"NPVOUͱ͍͏&$."4DSJQUͷ4UBHFͷఏҊ͕͋Δ
w ݩʑ3FQSFTFOUJOH.FBTVSFTͱݺ͍ͯͨఏҊ
w ॳ୯ҐมػೳͳͲαϙʔτ͢Δ༧ఆ͕༷͕ͩͬͨݮ͞ΕͯΔ
w ݱঢ়Ͱ୯ҐͱΛηοτͰཧ͢Δσʔλܗࣜͱͯ͠ͷఏҊ
+4
↔︎
)5.-Ͱࠓޙ࿈ܞ͕ͱΒΕ͍͔ͯ͘
let a = new Amount("42.195", { unit: "km" });
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"NPVOUͷఏҊ
ݸਓతʹ&$."4DSJQUଆͷ༷Λڵຯ࣋ͬͯͬͯͨ *OUM͖ͳͷͰ
w ͦͦ&4ͷ༷ఏҊͰ୯Ґͱ͍ͬͨ෦͕࠷ۙΞπΠ
w ࣗͷڵຯͱͭͳ͕͖ͬͯͨͷͰݸਓతʹ໘ന͔ͬͨ
࠷ۙ&$."ͷ༷ࡦఆͷͳ͔ͷϓϩηεʹJO8(ͷϨϏϡʔ͕ೖΔ
w ඪ४Խஂମҧͬͯͭͳ͕͍ͬͯΔ࣮ײ
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*NQSPWFNFOU
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༷ఏҊ͢Δ͚ͩ͡Όͳ͍
*O8(ͷΔ͜ͱ༷ఏҊΛ͢Δ͚ͩͰͳ͍
w ଞͷ8(ʹΑΔఏҊͷϨϏϡʔ
w ༷ࡦఆͷ్தͰϨϏϡʔ͕ೖΔ
w ཧͯ͠ΔυΩϡϝϯτ͕݁ߏ͋Δ
w దٓߋ৽ɾमਖ਼ͯ͠Δ
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JO8(ͷ%PDVNFOU
ಡΜͩ͜ͱ͋Δʁ🖐
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ࣗͪΌΜͱ
Βͳ͔ͬͨ🙇
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JO8(ͷ͍࣋ͬͯΔ%PDVNFOU
w IUUQTXXXXPSHCMPHJOUFSOBUJPOBMʹߦͬͯΈΑ͏
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JO8(ͷ͍࣋ͬͯΔ%PDVNFOUΛ
ҎԼͷΑ͏ͳ%PDVNFOU͕ฒΜͰΔ
w -BOHVBHF&OBCMFNFOU
w ݴޠʹΑΔ֤ػೳͷαϙʔτঢ়گ
w %FWFMPQQFS4VQQPSU
w ༷ͷࡦఆʹؔ͢ΔυΩϡϝϯτϒϥβ࣮͚ͷυΩϡϝϯτ
w &EVDBUJPO0VUSFBDI
w ίϯςϯπ࡞ɾ։ൃऀ͚ͷίϯςϯπ
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ΞϓϦ։ൃऀʹࢀߟʹͳΓͦ͏ͳͷ
(FUUJOH4UBSUFEXJUI*OUFSOBUJPOBMJ[BUJPO
w JOͱMOͷҧ͍ͳͲ͔Βελʔτͯ͠ߨ࠲ܗࣜͰֶΔهࣄ܈
"VUIPSJOH)5.-$44
w )5.-$44Λॻ্͘Ͱ߲͝ͱʹJO8(ͷ%PD-JOL͕·ͱ·ͬͯΔ
w ͔͜͜ΒؾʹͳΔͷΛ୳͢ͷ͕ૣ͍
"SUJDMFMJTU
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51"$Ͱಛʹ໘ന͔ͬͨٞ
51"$Ͱ%PDVNFOUͷߋ৽ͳͲ͕ੵۃతʹߦΘΕ͍ͯͨ
ͦͷதͰಛʹ໘ന͔ͬͨٞɾ%PD
w ʮจࣈԽ͚ʯͷఆٛͷ
w 4USJOH4FBSDIJOHͷυΩϡϝϯτվળ
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51"$Ͱ໘ന͔ͬͨٞNPKJCBLFͷఆٛ
*O8(Ͱ*OUFSOBUJPOBMJ[BUJPO(MPTTBSZͱ͍͏༻ޠूΛཧͯ͠Δ
ͦͷதʹຊޠ͔Βͦͷ··࠾༻͞ΕͨʮNPKJCBLFʯ͕͋Δ
ٞ͞Εͯͨ͜ͱ
w ϑΥϯτ͕ͳͯ͘ϨϯμʔͰ͖ͳ͍͜ͱͱNPKJCBLFҟͳΔͷͰʁ
w ͦͦTQFDͰΘΕΔʁ
w தࠃͰಉ͡Α͏ͳ֓೦͕͋Δʁ
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51"$Ͱͬͨ໘ന%PD4USJOH4FBSDIJOH
*O8(Ͱ4USJOH4FBSDIJOHͱ͍͏จࣈྻݕࡧػೳͷͨΊͷจॻ͕͋Δ
w ͜ͷ࣌Ͱ͍͢͝
จࣈྻݕࡧ͚ͩͰҎԼͷΑ͏ͳ͜ͱΛؾʹ͢Δඞཁ͕͋Δ
w શ֯֯ʁେจࣈখจࣈʁ
w ࣈͱ͔ଞݴޠͷࣈจࣈώοτ͢Δจࣈͷೖͬͨه߸ͷѻ͍
͜ͷ%PD5"1$தʹ͍͔ͭ͘ࢀߟจݙͷՃ6QEBUF͕ͳ͞Εͨ
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·ͱΊͱ͔ײͱ͔ࢥ͍ͱ͔
8$ʹ͓͚ΔࠃࡍԽͷͨΊͷӦΈଟذʹΘͨΔ
w ఏҊ͞ΕΔ༷໘ന͍͚ͲɺͦΕҎ֎ͷ׆ಈ͋Δ͍ͩ͠͡
w ͔ͤͬ͘ॻ͍ͯΔ%PDVNFOUಡ·Εͯཉ͍͠ͳ ࣗগͣͭ͠ಡΜͰΔ
૾ΑΓͣͬͱগͳ͍ਓ͕ͳΜͱ͔ࢧ͍͑ͯΔঢ়ଶͩͬͨ
w ֤ਓͷࣝྔͱࠃࡍԽͷࢥ͍ͰͳΜͱΓཱͬͯΔ Α͏ʹݟ͑ͨ
w ຊޠͱ͍͏ׂͱಛघͳݴޠΛ͍ͬͯΔҎ্ɺશવਓ͝ͱ͡Όͳ͍
w ݴޠࣄऀ͕͍ΕΔͱ͍͏͜ͱେ͖͍
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ऴΘΓ