Designing in React: Why and How

by Amagi

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Designing in id:amagitakayosi WHY and HOW? React

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@amagitakayosi

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ۀ຿Ͱ3FBDU࢖ͬͯ·͢

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Έͳ͞Μ 3FBDU ࢖ͬͯ·͔͢ʁ

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ࠓ೔͸ 3FBDUͱ͸ʁ ͱ͍͏࿩͸͠·ͤΜ

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͔ΘΓʹ 3FBDUք۾Ͱ Կ͕ى͖ͯΔͷʁ ͱ͍͏࿩Λ͠·͢

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3FBDUͷྺ࢙

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✨3FBDU஀ੜ✨ w ެ։ w େن໛ͳίʔυϕʔεͰ΋଱͑ΔΑ͏ʹ w ࠶ར༻Մೳͳίϯϙʔωϯτ w ୯ํ޲ͳσʔλϑϩʔ

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3FBDU "OHVMBS

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3FBDUͷྑ͍ͱ͜Ζ

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γϯϓϧ ଎͍ ςετ͠΍͍͢ ৘ใ͕๛෋ ࣮੷͕͋Δ *NNVUBCMF *TPNPSQIJD 'VUVSFPSJFOUFE

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ैདྷͷϑϨʔϜϫʔΫͱͷҧ͍ w ίϯϙʔωϯτࢦ޲ʹͳΓ΍͍͢ w ୯ํ޲ͳσʔλϑϩʔ

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ίϯϙʔωϯτࢦ޲ w 'PPCBS\CB[^ͱ͍͏ίϯϙʔωϯτ͸  શͯͷৼΔ෣͍͕CBSͷ஋Ͱܾ·Δ w 7JSUVBM%0. w %0.Λ௚઀৮Εͳ͍ w ଞͷίϯϙʔωϯτʹյ͞ΕΔࣄ͕ͳ͍

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୯ํ޲ͳσʔλϑϩʔ w ୤XBZCJOEJOH w ࢠ͕਌ͷ஋Λॻ͖׵͑Δ͜ͱ͕ͳ͍ʂ w 'PPCBS\CB[^ͱ͍͏ίϯϙʔωϯτ͸  CBSͷ஋ΛมߋͰ͖ͳ͍

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ࢀߟ3FBDUGPS%FTJHOFST IUUQSFBDUGPSEFTJHOFSTDPNMBCTSFBDUKTJOUSPEVDUJPOGPSQFPQMFXIPLOPXKVTU FOPVHIKRVFSZUPHFUCZ

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3FBDUք۾ͷϒʔϜ w 'MVYϑϨʔϜϫʔΫઓ૪ w *NNVUBCMF ؔ਺ܕ '31 w 3FBDU/BUJWF

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'MVYઓ૪ QIPUPCZ+BTPO"4BNGJFME IUUQTXXXGMJDLSDPNQIPUPT!/

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w 3FBDU͸ͨͩͷ7JFXϥΠϒϥϦ w 'MVYͱ͍͏ઃܭख๏͕ྲྀߦ w ϑϨʔϜϫʔΫ͕ཚཱ

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'VODUJPOBM 3FBDUJWF 1SPHSBNNJOH

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w ؔ਺ܕݴޠͷӨڹΛड͚ͨ  ઃܭख๏ϥΠϒϥϦ͕ྲྀߦ w *NNVUBCMF+4 0N ʜʜ

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3FBDU/BUJWF

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w 3FBDUͰJ04"OESPJEΞϓϦΛ։ൃ w +4࣮ߦΤϯδϯ͕σόΠε্Ͱ૸Δ w Ϗϧυͳ͠Ͱ+4ΛϦϩʔυ

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Ͱ΋ɺ3FBDUͷσβΠϯͬͯʜʜ w σβΠφʔ͸৮ΓͮΒ͍ΜͰ͠ΐʁ w ςϯϓϨʔτ͍͡Γʹ͍͘ w Ξχϝʔγϣϯ೉͍͠ w +4ॻ͚ͳ͍ͱ͍͚ͳ͍ʁʁ

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ʢ◞‸◟ʣ

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σβΠϯपΓͰ΋ಈ͖͕ʂʂ w #&. w $44JO+4 w ֤ΞχϝʔγϣϯϥΠϒϥϦ

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BEM

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#&.͕ྲྀߦ w #MPDL &MFNFOU .PEJpFSʹ෼͚ͯ  ελΠϧΛॻ͘ख๏ w 3FBDUͱ#&.͸૬ੑ͕͍͍ w ίϯϙʔωϯτ㲈#MPDL

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Block Element Modiﬁer

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CSS in JS

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$44͸᠘ͩΒ͚ w શ෦άϩʔόϧ w ΧεέʔσΟϯάɺ༏ઌ౓ w ม਺ɺؔ਺͔ͭ͑ͳ͍ w ܧঝͰ͖ͳ͍ʜʜ

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ϓϦϓϩηοαͷ࣌୅ w 4BTT -FTT 4UZMVT ʜʜ w ࠷ۙͩͱ1PTU$44ͱ͔

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ͦΕ+4Ͱྑ͘Ͷʁ 3FBDU։ൃϝϯόʔ $ISJTUPQIFS$IFEFBV

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$44JO+4ొ৔ w 3FBDUίϯϙʔωϯτఆٛ಺Ͱ  TUZMFଐੑʹελΠϧΛࢦఆ w ม਺ɺؔ਺ɺͳΜͰ΋࢖͑Δ

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CSS in JSͷίʔυྫ

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ओͳ$44JO+4ϥΠϒϥϦ w 3BEJVN%FDPSBUPSͰίϯϙʔωϯτΛϥο ϓ w $4+45FNQMBUF4USJOHͰελΠϧΛهड़ w $44.PEVMFT$44ϑΝΠϧΛಡΈࠐΉ

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Animation

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3FBDUඪ४ͷΞχϝʔγϣϯ w GCʮ3FBDU$445SBOTJUJPO(SPVQͰ  ࡉ੍͔͘ޚͰ͖ΔΑʔ ?P? ʗʯ w ཁૉͷग़ݱɺফ໓ͦΕͧΕʹ  ελΠϧΛ౰ͯΒΕΔ

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3FBDU$445S SZͷ࢖͍ํ w 3FBDU$445SBOTJUJPO(SPVQͰ  ର৅ͷίϯϙʔωϯτΛXSBQ w FOUFS MFBWF FOUFSBDUJWF౳ͷΫϥεʹ  ελΠϧΛهड़

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ओͳΞχϝʔγϣϯϥΠϒϥϦ w SFBDUNPUJPO w SFBDUXFCBOJNBUJPO w SFBDUWFMPDJUZ

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SFBDUNPUJPO w ࠓͷͱ͜ΖҰ൪ਓؾ TUBST w FBTJOHؔ਺ΛબͿͷͰ͸ͳ͘ɺ  όωͷߗ͞Ͱಈ͖ΛΧελϚΠζ͢Δ

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όωͷߗ͞

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SFBDUWFMPDJUZ w 7FMPDJUZKTͷϥούʔ w K2VFSZ࣌୅͔Β͓ੈ࿩ʹͳͬͯͨํ΋  ଟ͍͸ͣ

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SFBDUXFCBOJNBUJPO w 8FC"OJNBUJPOT"1*ͷϥούʔ w ʹެ։͞Εͨ͹͔Γʂ

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8FC"OJNBUJPOT"1* w $44 47(ʹͭͮ͘  ৽͍͠Ξχϝʔγϣϯ"1* w λΠϜϥΠϯ ΩʔϑϨʔϜϕʔε  ࠶ੜఀࢭר͖໭͠Մೳ w ࠶ੜޙͷίʔϧόοΫΛઃఆͰ͖Δ

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·ͱΊ

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ΈΜͳ3FBDUͰ༡΅͏ʂʂ w ͜Ε·Ͱͷ.7$ΞʔΩςΫνϟͱ͸  ҰઢΛը͍ͯ͠Δ w ಠಛͷจԽݍ͕ੜ·Ε͍ͯΔ w ΋ͷ͍͢͝εϐʔυͰ  ৽͍͠௅ઓ͕ߦΘΕ͍ͯΔ