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マインスイーパで学ぶReact / Pepabo Frontend Tech Meeting #1
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purple_jwl
March 16, 2018
Programming
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マインスイーパで学ぶReact / Pepabo Frontend Tech Meeting #1
https://purple-jwl.github.io/react-minesweeper/
purple_jwl
March 16, 2018
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Transcript
ϑϩϯτΤϯυςοΫϛʔςΟϯά !QVSQMF@KXM ϚΠϯεΠʔύͰֶͿ3FBDU
࠷ۙϑϩϯτΤϯυʹڵຯʑ͓͡͞Μ ͺʔΆʔ!QVSQMF@KXM
࣍ wϚΠϯεΠʔύͱ w3FBDUͱ w3FBDUͰϚΠϯεΠʔύΛ࡞Δ w·ͱΊ
ϚΠϯεΠʔύͱ
ϚΠϯεΠʔύ wʹൃ໌͞Εͨਓ༻ͷίϯϐϡʔλήʔϜ wϘʔυ 3Y$ ্ʹଘࡏ͢Δ.ݸͷཕͷॴΛώϯτΛݩʹಛఆ͢ Δ͜ͱ͕త
࡞ͬͨͭͷσϞ IUUQTQVSQMFKXMHJUIVCJPSFBDUNJOFTXFFQFS
3FBDUͱ
3FBDU w'BDFCPPL͕։ൃΛߦ͍ͬͯΔ+BWB4DSJQUϥΠϒϥϦ w.7$Ͱݴ͏ͱ͜ΖͷWJFXͷΈΛ୲͢Δ wίϯϙʔωϯτΛఆٛ͠ɺͦΕΛΈ߹Θͤͯը໘Λ࡞Δ w୯ํσʔλϑϩʔɺԾ%0.ɺ+49͕ಛͱͯ͠ڍ͛ΒΕΔ
ίϯϙʔωϯτ wը໘Λߏ͢Δ෦ͷ͜ͱ wঢ়ଶʢTUBUFʣΛ࣋ͭ͜ͱ͕Ͱ͖Δ
୯ํσʔλϑϩʔ wجຊతʹίϯϙʔωϯτ͔Βࢠίϯϙʔωϯτʹঢ়ଶ͕ྲྀΕΔ w͕ࣗ࣋ͭঢ়ଶΛTUBUFɺίϯϙʔωϯτ͔ΒྲྀΕ͖ͯͨঢ়ଶΛ QSPQTͱ͍͏ wTUBUFॻ͖͑ՄೳɺQSPQTಡΈࠐΈઐ༻ wίϯϙʔωϯτ͕શͯͷTUBUFΛҰݩཧ͢Δ͜ͱ͕ଟ͍
Ծ%0. wੜ%0.ͱରʹͳΔͷ wԾ%0.Λ3FBDUͰཧ͠ɺঢ়ଶมԽʹΑΔԾ%0.ͷࠩͷΈΛ ੜ%0.ʹөͤ͞ΔΈ w͜ͷΈʹΑͬͯੜ%0.ͷૢ࡞ΛۃྗݮΒ͠ɺύϑΥʔϚϯε ্Λ࣮ݱ͍ͯ͠Δ
+49 w+BWB4DSJQUͷߏจ֦ுͰ)5.-ͷΑ͏ʹهड़Ͱ͖Δ w3FBDUͱҰॹʹར༻͢Δ͜ͱ͕ਪ͞Ε͍ͯΔʢඞਢͰͳ͍ʣ const App = () => ( <div
className=“MyApp”> = </div> );
3FBDUͰϚΠϯεΠʔύΛ࡞Δ
DSFBUFSFBDUBQQͰڥߏங
DSFBUFSFBDUBQQ w'BDFCPPL͕։ൃΛߦ͍ͬͯΔπʔϧ wίϚϯυҰൃͰ3FBDUͷڥߏஙͯ͘͠ΕΔ w8FCQBDL#BCFMͳͲͷઃఆ͕ෆཁͰɺ3FBDUΛαΫοͱࢼͯ͠Έͨ ͍ͱ͖ʹศར $ create-react-app react-minesweeper
ίϯϙʔωϯτͷઃܭΛߟ͑Δ
ίϯϙʔωϯτͷઃܭ wը໘Λίϯϙʔωϯτ֊ʹղ͢Δ wͭͷίϯϙʔωϯτʹͤ͞Δ͜ͱ͚ͭͩʹ͢Δͷ͕ϕετ ʢ͍ΖΜͳ͜ͱΛΒͤͳ͍ʣ
None
ʜ
ʜ "QQ #PBSE $POUSPM"SFB $FMM
ͲͷίϯϙʔωϯτʹTUBUFΛ ࣋ͨͤΔ͔ߟ͑Δ
୯ํσʔλϑϩʔʢ࠶ܝʣ wجຊతʹίϯϙʔωϯτ͔Βࢠίϯϙʔωϯτʹঢ়ଶ͕ྲྀΕΔ w͕ࣗ࣋ͭঢ়ଶΛTUBUFɺίϯϙʔωϯτ͔ΒྲྀΕ͖ͯͨঢ়ଶΛ QSPQTͱ͍͏ wTUBUFॻ͖͑ՄೳɺQSPQTಡΈࠐΈઐ༻ wίϯϙʔωϯτ͕શͯͷTUBUFΛҰݩཧ͢Δ͜ͱ͕ଟ͍
ʜ "QQ #PBSE $POUSPM"SFB $FMM
"QQ #PBSE $POUSPM"SFB $FMM $FMM $FMM ʜ
"QQ #PBSE $POUSPM"SFB $FMM $FMM $FMM ʜ ˡ͍ͭͩ͜ʂʂ
ͲͷΑ͏ͳঢ়ଶΛ࣋ͨͤΔ͔ ߟ͑Δ
ʜ
ͲͷΑ͏ͳঢ়ଶΛ࣋ͨͤΔ͔ wඞཁͳใ͕͍Ζ͍Ζ͋Δ w൫໘ͷαΠζɺཕͷɺ֤ηϧͷ։ดঢ়ଶɺ֤ηϧͷضͷ༗ແɺ ֤ηϧͷपғͷཕʢώϯτʣɺήʔϜͷܦա࣌ؒɺͳͲͳͲʜ wʢήʔϜϩδοΫͷ࣮ํ๏ʹΑͬͯඞཁͳใ͕มΘΔ͔ʣ
ͲͷΑ͏ͳΠϕϯτ͕͋Δͷ͔ ߟ͑Δ
ʜ
ͲͷΑ͏ͳΠϕϯτ͕͋Δͷ͔ߟ͑Δ w͜Ε͍Ζ͍Ζ͋Δ wήʔϜͷқબɺηϧΛ։͚ΔɺضΛཱͯΔɺλΠϚʔͷ։࢝ ఀࢭͳͲ
࣮͢Δ
࣮͢Δ w͜͜·Ͱߟ͑ͨ༰Λݩʹ࣮͢Δ w֤ίϯϙʔωϯτ͕Δ͜ͱ͕ఆ·͍ͬͯΕɺͦΕʹඞཁͳঢ়ଶ͕ ͔ΔΑ͏ʹͳΔͷͰɺίϯϙʔωϯτ͔Βඞཁͳঢ়ଶΛྲྀͤΑ ͍ wࢠίϯϙʔωϯτͷQSPQTಡΈऔΓઐ༻ͳͷͰɺTUBUFΛॻ͖͑ͨ ͍߹ίϯϙʔωϯτͷΠϕϯτϋϯυϥΛݺͼग़͢Α͏ʹ͢Δ
Ͱ͖ͨؾ͕͢Δʂ
·ͱΊ
·ͱΊ wϚΠϯεΠʔύΛࡐʹ3FBDUΛֶΜͩ w3FBDUࣗମγϯϓϧͳͷͰڽͬͨ͜ͱΛ͠ͳ͍ʹ؆୯ʹॻ͚Δ ͜ͱ͕͔ͬͨ wͳΜͱͳ͘3FBDUʹڵຯΛ࣋ͬͯ͘ΕΔਓ͕૿͑Δͱخ͍͠ wϚΠϯεΠʔύ͕͏·͘ͳͬͨ