知っておきたいブラウザについての基礎入門

B81a8fa35a79d31881ca3d348f3e894a?s=47 pastak
February 17, 2017

 知っておきたいブラウザについての基礎入門

知っておきたいブラウザについての基礎入門 at サポーターズ京都勉強会 https://supporterz.connpass.com/event/51220/

B81a8fa35a79d31881ca3d348f3e894a?s=128

pastak

February 17, 2017
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    ΢Σϒϒϥ΢βͱ͸ʁ ΢Σϒϒϥ΢βʢΠϯλʔωοτϒϥ΢βɺweb browserʣͱ͸ɺ World Wide Web (WWW) ͷར༻ ʹڙ͢Δϒϥ΢βͰ͋ΓɺϢʔβΤʔδΣϯτ (UA)

    Ͱ͋Δɻ۩ମతʹ͸ɺ΢ΣϒϖʔδΛը໘΍ ҹ࡮ػʹग़ྗͨ͠ΓɺϋΠύʔϦϯΫΛͨͲͬͨΓ ͢ΔͳͲͷػೳ͕͋Δɻ୯ʹϒϥ΢βʢϒϥ΢βʔʣ ͱݺΜͩ৔߹ɺଟ͘͸΢Σϒϒϥ΢βͷ͜ͱΛࢦ͢ɻ https://ja.wikipedia.org/wiki/ %E3%82%A6%E3%82%A7%E3%83%96%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6
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                      .P[JMMB$PSQPSBUJPO ઃཱ .P[JMMB$IJOB ઃཱ .P[JMMB.BOJGFTUP'JSTU%SBGU /FUTDBQF ઐ೚ελοϑ ͱίϛϡχςΟͱͷڞಉ ϓϩδΣΫτͱͯ͠ /FUTDBQF$PNNVOJDBUJPOT ͷग़ࢿʹΑΓઃཱ /$ ༝དྷͷίʔυͷഁ غͱ৽ϨϯμϦϯάΤ ϯδϯʮ(FDLPʯϕʔ εͰͷࠜຊతͳઃܭͷ ͠௚͠Λܾఆ ϚʔΫ ɾΞϯυϦʔηϯ Βɺ .PTBJDΛ։ൃ ς ΟϜɾόʔφʔζɾ Ϧʔ 8PSME8JEF8FCͷݪܕ ͱͳΔఏҊ )5.- )551 63-Λઃܭ ੈքॳͷ8FCαΠ τ 8PSME8JEF8FCͷιʔε ίʔυΛύϒϦ ο Ϋ υϝΠϯ ͱ ͯ͠ެ։ .PTBJDͷ ϥΠηϯεΛऔಘ ɹ ϚʔΫɾΞϯυϦʔηϯͱ δϜɾΫϥʔΫʹΑ Γઃཱ ඇӦར૊৫ͱͯ͠ಠཱ .P[JMMB&VSPQF ઃཱ .P[JMMB+BQBO ઃཱ NETSCAPE COMMUNICATIONS /$Y Λແঈ഑෍ ։ൃதͷ /$ Λ ΦʔϓϯιʔεԽ ೔ຊ๏ਓઃཱ /$4" ͔Βͷૌ͑ʹΑΓ ໊ࣾมߋ ɾ 'JSFGPY04 ɾ )5.-קࠂ ɾ 8FC$- ɾ )551 ɾ&$."4DSJQU ɾ'JSFGPY0457 ɾ$444OBQTIPU ɾ 'JSFGPYԆ௕  αϙʔτ൛ ɾ )5.- ࠷ऴ૲Ҋ  ެ։ ɾ 8FC(- ɾ 8$ ઃཱ ɾ /FUTDBQF/BWJHBUPS  ͕ࢢ৔Λ੮ר͢Δ ɾ :BIPP αʔϏε ։࢝ ɾ 8FC.ެ։ ɾ$444OBQTIPU ɾ +BWB ొ৔ ɾ Πϯλʔωοτ  ར༻ऀͷٸ૿ ɾ ϒϥ΢βઓ૪ܹԽ ɾ $44 קࠂ ɾ )551 ɾ .PTBJD ͕ࢢ৔Λ  ੮ר͢Δ   ೥Ͱ  ສ  μ΢ϯϩʔυ ɾ )551 ɾ Πϯλʔωο τ઀ଓ  ϗετ͕  ສΛ  ௒͑Δ ɾ Πϯλʔωο τ઀ଓ  ϗετ͕  ສΛ  ௒͑Δ ɾ೔ຊ࠷ॳͷ 8FC  αΠτ͕ެ։ ɾ ϒϥ΢βઓ૪  ࣄ্࣮ͷऴᖼ ɾ *& γΣΞٸ૿ ɾ $44 קࠂ ɾ 9.- קࠂ ɾ %0. קࠂ ɾ&$."4DSJQUOE ɾ&$."4DSJQUSE ɾ )5.- קࠂ ɾ )551 ɾ&$."4DSJQUTU ɾ "KBY ɾ 8FC ɾ 8$)5.-8( ઃཱ ɾ $444OBQTIPU ɾ )5.- ૲Ҋެ։ ɾ 8$9)5.-8( ׆ಈऴྃ ɾ&$."4DSJQUUI ɾ ถϦϋϏϦςʔ  γϣϯ๏  ৚  ࢪߦ։࢝ ɾ ϒϩʔυόϯυ  ීٴ͕೔ຊͰ࢝ ·Δ ɾ "0- ͱ .JDSPTPGUɺ  ಠې๏ૌুͰ࿨ղ  ϒϥ΢βઓ૪ʹ  ऴࢭූ ɾ ϒϩάϒʔϜ  ೔ຊͰ࢝·Δ ɾ  ʮઓޙੈ୅ʯ  ϒϥ΢βͷ୆಄ ɾ 8)"58( ઃཱ ɾ +*49 ੍ఆ ɾ (3&&ɺNJYJ ͳͲ  4/4 ͕ϒʔϜʹ ɾ "0-/FUTDBQFɺ  .JDSPTPGU Λ  ಠې๏ҧ൓Ͱఏૌ /$4" $&3/ .PTBJD $PNNVOJDBUJPOT .JDSPTPGU "QQMF 4QZHMBTT 0QFSB 4PGUXBSF ,%& 1SPKFDU (PPHMF BTNKT BTNKT .P[JMMB$MBTTJD (FDLP 8FC ඪ ४ ٕ ज़ Λ ߴ ౓ ʹ α ϙ ʔ τ 5SJEFOU &EHF #MJOL 1SFTUP 8FC,JU /FUTDBQF/BWJHBUPS ʢίʔυωʔϜʮ.P[JMMBʯ ʣ /FUTDBQF/BWJHBUPS /FUTDBQF/BWJHBUPS 4UBOEBSE&EJUJPO /FUTDBQF/BWJHBUPS (PME&EJUJPO /FUTDBQF$PNNVOJDBUPS /FUTDBQF$PNNVOJDBUPS .P[JMMB"QQMJDBUJPO4VJUF .P[JMMB"QQMJDBUJPO4VJUF <.JMFTUPOF ʙ > ʢίʔυωʔϜʮ4FBNPOLFZʯ ʣ /FUTDBQF .P[JMMB"QQMJDBUJPO4VJUF 'JSFGPY%FWFMPQFS&EJUJPO J04൛'JSFGPY 4FB.POLFZ    /FUTDBQF .P[JMMB'JSFCJSE Firefox        .P[JMMB"QQMJDBUJPO4VJUF .P[JMMB1IPFOJY     ϦϦʔε ୈੈ୅+BWB4DSJQUΤϯδϯ ϋʔυ΢ΣΞΞΫηϥϨʔγϣϯ ɹɹɹɹ8FC(- 'JSFGPY4ZOD ɹɹɹɹ"OESPJE൛ϦϦʔε ୈੈ୅+BWB4DSJQUΤϯδϯ ϋʔυ΢ΣΞΞΫηϥϨʔγϣϯ ɹɹɹɹ8FC(- 'JSFGPY4ZOD ɹɹɹɹ"OESPJE൛ϦϦʔε "OESPJE൛/BUJWF6* ϦϦʔε "OESPJE൛/BUJWF6* ϦϦʔε Ҏޙ 'JSFGPYͷվળ఺Λ औΓೖΕͯߋ৽͕ଓ͘ &QJD(BNFT ͱ 6OSFBM&OHJOF ΛҠ২ 'JSFGPYͱ ฒߦͯ͠։ൃ Ҏޙ 'JSFGPYͷվળ఺Λ औΓೖΕͯߋ৽͕ଓ͘ &QJD(BNFT ͱ 6OSFBM&OHJOF ΛҠ২ 6OJUZ͕8FC(- ग़ྗʹਖ਼ࣜରԠ 8FC(- 'JSFGPYͱ ฒߦͯ͠։ൃ 8FC(- *&͕࠷ޙͷ ϝδϟʔόʔδϣϯʹ *&͕࠷ޙͷ ϝδϟʔόʔδϣϯʹ #MJOLΤϯδϯ #MJOLΤϯδϯ (PPHMF(MBTT (PPHMF(MBTT "MQIBCFU ઃཱ "MQIBCFU ઃཱ 1SFTUP Τϯδϯͷ 0QFSB ࠷ऴόʔδϣϯ ΤϯδϯΛ8FC,JU ʹมߋ ΤϯδϯΛ8FC,JU ʹมߋ 1SFTUP Τϯδϯͷ 0QFSB ࠷ऴόʔδϣϯ ΤϯδϯΛ#MJOL ʹมߋ ΤϯδϯΛ#MJOL ʹมߋ 6OJUZ͕8FC(- ग़ྗʹਖ਼ࣜରԠ .PTBJD ͷݖརΛ ८Γରཱɺ཭൓ ϥΠηϯεڙ༩ ϥΠηϯεڙ༩ γϛϡϨʔλ IUUQMJOFNPEFDFSODIXXXIZQFSUFYU8885FSNTIUNM εΫϦϓτ΍ελΠϧγʔτʹ ରԠͨ͠ߴػೳϒϥ΢β ੈքॳͷ.BD༻ϒϥ΢β ΛϦϦʔε ੈքॳͷ 8JOEPXT༻ϒϥ΢β ,)5.-8 ͷ ։ൃΛ։࢝ .BD049W $IFFUBI ϦϦʔε .BD049W 1BOUIFS ϦϦʔε Ξυϫʔζ αʔϏε։࢝ (PPHMF%FTLUPQ ϦϦʔε (PPHMF.BQT αʔϏε։࢝ (NBJM αʔϏε։࢝ (PPHMF1BDL ϦϦʔε (PPHMF%PDT 4QSFBETIFFUT αʔϏε։࢝ "OESPJE ϦϦʔε 7 (PPHMF αʔϏε։࢝ .PTBJD ͷ ϥΠηϯεΛऔಘ 8JOEPXT7JTUB ϦϦʔε 8JOEPXT9141 ϦϦʔε 8JOEPXT.F ϦϦʔε 8JOEPXT91 ϦϦʔε 8JOEPXT ϦϦʔε 8JOEPXT ϦϦʔε *& ͱ 8JOEPXT Λ౷߹ 8JOEPXT ϦϦʔε ݕࡧΤϯδϯ ։ൃ͔Β૑ۀ .BD04 ϦϦʔε .BD04ϦϦʔε .BD049W 1VNB ϦϦʔε .BD049W +BHVBS ϦϦʔε .BD049W 5JHFS ϦϦʔε .BD049W -FPQBSE ϦϦʔε .BD049W 4OPX-FPQBSE ϦϦʔε 049-JPO ϦϦʔε 4BGBSJ Λඪ४ 8FC ϒϥ΢β ʹ࠾༻ J1BEൃച։࢝ .BD04ϦϦʔε J1IPOFൃച։࢝ 5PQ4JUFT $PWFS'MPX ϦϦʔε ϒοΫϚʔΫͱཤྺͷ౷߹ εϚʔτϩέʔγϣϯόʔ &744- "DJE ςετ߹֨ ॎॻ͖දࣔ ,)5.- Λ ϕʔεʹͯ͠ ϨϯμϦϯά ΤϯδϯΛ ։ൃ ϙοϓΞοϓ ϒϩοΫ μ΢ϯϩʔυ ϑΝΠϧͷ ηΩϡϦςΟܯࠂ ΞυΦϯ؅ཧ ϦϦʔε MJCXXXΛ ࢖ͬͯ։ൃ ࠶ར༻Մೳͳ $ ݴޠͷ ϥΠϒϥϦͱͯ͠Ұ෦Λ ॻ͖௚͠ ϦϦʔε ϦϦʔε ϦϦʔε ϦϦʔε ൃల ൃల .BJM ͱ $PNQPTFS Λ౷߹ +4DSJQU 7#4DSJQU $44ʢ૲ҊʣͷҰ෦ ൃల ഁغ ϧϏදࣔ ൃల ϦϦʔε ੒ՌΛར༻ Πϝʔδ πʔϧόʔ ύʔιφϧόʔ όάमਖ਼ ൃల 'JSFGPY ͷ վળ఺ΛϑΟʔυόοΫ 'JSFGPY ͷվળ఺Λ ɹɹɹϑΟʔυόοΫ 4FB.POLFZ$PVODJM ͕։ൃΛܧଓ λϒϒϥ΢ζ ϑΟογϯά ࠮ٗܯࠂ 8FC ඪ४ٕज़΁ͷ ରԠΛվળ &744- ϦϦʔε ϦϦʔε "DJE ςετ߹֨ ϑΟʔυϦʔμʔ ϑΟογϯά ࠮ٗܯࠂ &744- 8FC ΫϦοϓ Ϧʔμʔ ֦ுػೳ ϦʔσΟϯά Ϧετ $44ɼ%ZOBNJD)5.- ࠃࡍԽͷվળ +BWB4DSJQU ϑΟογϯά࠮ٗܯࠂ ηογϣϯ෮ݩ 1FSTPOBT 1IPFOJY ࣾͷૌ͑ʹΑΓ ໊শมߋ 'JSFCJSE ϓϩδΣΫτͷ ૌ͑ʹΑΓ໊শมߋ ֦ுػೳϚωʔδϟ ࣗಈΞοϓσʔτ 47( )5.-$BOWBT Ұ෦ͷίʔυͱ ઃܭίϯηϓτ Λܧঝ 8FC ඪ४ٕज़΁ͷ ରԠΛվળ ϚϧνϓϩηεԽ ηογϣϯ෮ݩ ৽+BWF4DSJQUΤϯδϯ ϋʔυ΢ΣΞ ΞΫηϥϨʔγϣϯ )5.-΁ͷରԠ։࢝ $44 %ZOBNJD)5.- ϓϥάΠϯ ϓϩηε෼཭ ʢʙʣ +BWB4DSJQUܕਪ࿦ 'JSFGPY ͷ վળ఺ΛϑΟʔυόοΫ  Ͱ ։ൃΛऴྃ  ͔Β .BD ͷඪ४ 8FC ϒϥ΢β ʹ࠾༻ ϩΰมߋ ৽ +BWB4DSJQU Τϯδϯ ϓϥΠϕʔτϒϥ΢δϯά )5.- ΁ͷରԠΛڧԽ Ϧ Ϧ ồ ε 47(5JOZ ແྉԽ ೔ຊޠදࣔ λ ϒ ϒ ϥ ΢ ζ ػ ೳ ͷ ݪ ܕ &NBJM ΫϥΠΞϯτ ৽ +BWB4DSJQU Τϯδϯ ϓϥΠϕʔτϒϥ΢δϯά λϒελοΩϯά ΤΫεςϯγϣϯ 6* σβΠϯมߋ #JU5PSSFOU ΢ΟδΣοτ "DJE ςετ߹֨ ϑΟογϯά ࠮ٗܯࠂ εϐʔυμΠϠϧɺ ϒοΫϚʔΫͳͲͷ ಉظ ཤྺ͔Βͷશจݕࡧ &744- λϒϒϥ΢ζ ϙοϓΞοϓϒϩοΫ ϒϥ΢βػೳΛಠཱ ϦϦʔε ʢόʔδϣϯதུʣ ʢόʔδϣϯதུʣ ϦϦʔε ϦϦʔε 7 ֦ுػೳϚωʔδϟ 049 .PVOUBJO-JPO ϦϦʔε 049 .BSWFSJDLT ϦϦʔε 8JOEPXT ϦϦʔε 8JOEPXT ϦϦʔε XFC35$ BTNKT XFC35$ BTNKT Ϛϧνϓϩηε 8FC&YUFOTJPO ϧϏɺ &.& ϧϏɺ &.& τϥοΩϯάอޢػೳ෇͖ ϓϥΠϕʔτϒϥ΢δϯά τϥοΩϯάอޢػೳ෇͖ ϓϥΠϕʔτϒϥ΢δϯά 8JOEPXT ϦϦʔε +BWB4DSJQUΤϯδϯ $IBLSB$PSFΛ Φʔϓϯιʔεʹ +BWB4DSJQUΤϯδϯ $IBLSB$PSFΛ Φʔϓϯιʔεʹ 049 .BSWFSJDLT ϦϦʔε 049 :PTFNJUF ϦϦʔε 049 :PTFNJUF ϦϦʔε 049 &M$BQJUBO ϦϦʔε 049 &M$BQJUBO ϦϦʔε "QQMF8BUDI ൃച։࢝ "QQMF8BUDI ൃച։࢝ 8JOEPXT1IPOF ϦϦʔε 8JOEPXT ϦϦʔε /$4".PTBJD 8PSME8JEF8FC -JOF.PEF#SPXTFS MJCXXX *OUFSOFU&YQMPSFS &EHF    4QZHMBTT.PTBJD 7JPMB 4BNCB .BD888 $FMMP    41    41 4BGBSJ       $ISPNF       GPS.BD GPS.BD GPS.BD GPS.BD                  .VMUJ5PSH0QFSB 0QFSB    ϑΟʔυϦʔμʔ *3$ ΫϥΠΞϯτ ৽ϨϯμϦϯά Τϯδϯ      ιʔείʔυΛެ։ *& ͷ͝ઌ૆༷΋ .PTBJDɻ ࣮͸ *& ΋਌ੰͩͬͨΜͩͶɻ ೥·Ͱ͸ɺ /FUTDBQF/BWJHBUPS ͕ .BDͷඪ४8FC ϒϥ΢βͩͬͨΜͩΑɻ ͜ͷ͜Ζ͔Β*&Λ࢖͏ਓ͕͍͢͝ ੎͍Ͱ૿͑ͨΜͩɻ θϩ͔Β࡞ΔΜ͡Όͳͯ͘ ͢Ͱʹ͋ͬͨ෺Λվྑͯ͠ ࢖ͬͨΜͩͶɻ 'JSFGPY ͷԕ͍ ͝ઌ૆༷ͩΑ ʂ ʮ"DJEςετʯ ͸ ϒ ϥ ΢β͕ͪΌΜͱ࡞ΒΕ ͍ͯΔ͔Ͳ͏͔ͷ෼͔ Γ΍͍͢໨҆ʹ࢖ΘΕ ͯΔΜͩɻ ϑΟογϯά࠮ٗܯࠂػೳ΍ λϒػೳ͸ɺ ΋͏෇͍ͯΔͷ ͕౰ͨΓલʹͳͬͯΔΜͩͶɻ ࠷ۙ஫໨͞ΕͯΔٕज़ ͷ΄ͱΜͲ͸ɺ ͜ͷࠒ ʹ͸΋͏ग़ଗͬͯͨΜ ͩͶɻ *&͕͓΍͢Έͯ͠Δؒɺ ΈΜͳҰੜݒ໋ ͕Μ͹ͬͯͨΜͩΑɻ 'JSFGPY΍ଞͷϒϥ΢β͕ ͕Μ͹ͬͯͩΜͩΜਓؾ͕ ग़͖͔ͯͨΒɺ *&΋·ͨ ͕Μ͹Γ࢝ΊͨΜͩɻ ͜Ε͔Β΋ɺ ΑΓ࢖͍΍͘͢ɺ ΑΓศརʹͲΜͲΜਐา͍ͯ͘͠Αɻ ָ͠Έʹͯͯ͠Ͷʂ ͜͏ͯ͠ίϛϡχςΟͰ ։ൃΛҾ͖ܧ͛Δͷ΋ ΦʔϓϯιʔεͳΒͰ͸ͩͶʂ ʮ44- ʢ҉߸Λ࢖ͬͨ҆શͳ௨৴ʣ ʯ ΍ʮ+BWB4DSJQUʯ͸ɺ ͜ ͷ ͜ Ζ ʹ /FUTDBQF͕࡞ͬͨΜͩΑɻ Πϯλʔωοτͱ͍͑͹ ωοτεέʔϓʂ ͍ͬͯ͏͘Β͍ͷେਓؾ ͩͬͨΜͩɻ Έ Μ ͳ ʹ ڠ ྗͯ͠ ΋ Β͚ͬͨͲɺ ࠷ॳ͸͏· ͍͘ ͔ ͳ ͔ ͬͨ Μ ͩ ʜʜ ੈքॳͷ XFCϒϥ΢β͸ 8PSME8JEF8FCͩΑ ·ͩ·ͩ४උෆ଍ͩͬ ͔ͨΒɺ *&ʹ͞Βʹࠩ Λͭ ͚Β ΕͪΌͬͨ ʜʜ ϘϥϯςΟΞ׆ಈͰ ͣͬͱࢧ͑ͯ͘ΕͨΜͩΑɻ ΍ͬͱ'JSFGPYͷग़൪ʂ ΞϝϦΧͷ৽ฉʹ޿ࠂ͕ͷͬͨΓͯ͠ɺ ·ΔͰ͓ࡇΓΈ͍ͨͩͬͨΑɻ ʮ(FDLPʯ ͍ͬͯ͏ ৽͍ٕ͠ज़ͷ͓͔͛Ͱੜ ·ΕมΘͬͨΜͩΑʂ ,%&͸ɺ 8JOEPXT΍.BDͷΑ͏ͳ؀ڥΛࣗ ༝ͳιϑτ΢ΣΞͰ࡞ΔϓϩδΣΫ τͩΑɻ ͦͷҰ෦ͱͯ͠8FCϒϥ΢β͕ඞཁͩͬͨ Μͩɻ ൪໨ͷϒϥ΢β-JOF.PEF#SPXTFS͸ γϛϡϨʔλͰମݧͰ͖ΔΑ 0QFSB͸/FUTDBQF΍*&ͱ ಉ͘͡ Β͍લ͔Β͋ͬͨΜͩͶɻ ͜ͷ͜Ζ͸*&ͱ͓ޓ͍ʹ ͸͛͘͠ڝ૪ͯͨ͠ΜͩͶɻ ήʔϜػฒͷ%ήʔϜ͕ ಈ͘Α͏ʹͳͬͨΜͩΑʂ ੈքॳͷ։ൃऀ޲͚ ϒϥ΢βʂ "QQ MFͱ( P P HM Fͷ 8FC,JUڞಉ։ൃ͕ऴྃ͠ $ISPNF͸෼ذͨ͠#MJOL ΤϯδϯʹͳͬͨΜͩ ແྉԽ͞ΕΔલ͸ɺ πʔϧόʔʹ޿ࠂ͕ ෇͍ͯͨΜͩΑɻ Έͳ͞Μ͸ɺීஈ࢖͍ͬͯΔ 8FC ϒϥ΢β͕Ͳ͏΍ͬͯੜ·Ε͖͔ͯͨɺͲΜͳ෩ʹਐา͖͔ͯͨ͠Λ஌͍ͬͯ·͔͢ʁɹ ࢁ͋Γ୩͋Γͷ 'JSFGPY ͷੜཱ͍ͪͱ͋Θͤͯɺ͍ΖΜͳϒϥ΢βͷਐาͷྺ࢙Λௐ΂ͯΈ·͠ΐ͏ʂ フォクすけと 学ぼう! .P[JMMB+BQBO͜ͷ࡞඼͸ΫϦΤΠςΟϒɾίϞϯζදࣔඇӦརࠃࡍϥΠηϯεͷԼʹఏڙ͞Ε͍ͯ·͢ɻ .P[JMMBɺ 'JSFGPYɺ 'JSFGPYϩΰ͸ɺ ถࠃ.P[JMMB'PVOEBUJPOͷถࠃ͓Αͼͦͷଞͷࠃʹ͓͚Δ঎ඪ·ͨ͸ొ࿥঎ඪͰ͢ɻ ͦͷ΄͔هࡌ͞Ε͍ͯΔ঎඼໊͸ɺ ֘౰͢Δ֤ࣾͷ঎ඪ·ͨ͸ొ࿥঎ඪͰ͢ɻ  ΅͘ͱ͍ͬ͠ΐʹ ϒϥ΢βͷྺ࢙Λษڧ ͯ͠ΈΑ͏ʂ ࢁંΓ ࢁંΓ ୩ંΓ ୩ંΓ CC BY-NC 4.0 Mozilla Japan https://www.mozilla.jp/blog/entry/10552/
  5. 42.

             

                      .P[JMMB$PSQPSBUJPO ઃཱ .P[JMMB$IJOB ઃཱ .P[JMMB.BOJGFTUP'JSTU%SBGU /FUTDBQF ઐ೚ελοϑ ͱίϛϡχςΟͱͷڞಉ ϓϩδΣΫτͱͯ͠ /FUTDBQF$PNNVOJDBUJPOT ͷग़ࢿʹΑΓઃཱ /$ ༝དྷͷίʔυͷഁ غͱ৽ϨϯμϦϯάΤ ϯδϯʮ(FDLPʯϕʔ εͰͷࠜຊతͳઃܭͷ ͠௚͠Λܾఆ ϚʔΫ ɾΞϯυϦʔηϯ Βɺ .PTBJDΛ։ൃ ς ΟϜɾόʔφʔζɾ Ϧʔ 8PSME8JEF8FCͷݪܕ ͱͳΔఏҊ )5.- )551 63-Λઃܭ ੈքॳͷ8FCαΠ τ 8PSME8JEF8FCͷιʔε ίʔυΛύϒϦ ο Ϋ υϝΠϯ ͱ ͯ͠ެ։ .PTBJDͷ ϥΠηϯεΛऔಘ ɹ ϚʔΫɾΞϯυϦʔηϯͱ δϜɾΫϥʔΫʹΑ Γઃཱ ඇӦར૊৫ͱͯ͠ಠཱ .P[JMMB&VSPQF ઃཱ .P[JMMB+BQBO ઃཱ NETSCAPE COMMUNICATIONS /$Y Λແঈ഑෍ ։ൃதͷ /$ Λ ΦʔϓϯιʔεԽ ೔ຊ๏ਓઃཱ /$4" ͔Βͷૌ͑ʹΑΓ ໊ࣾมߋ ɾ 'JSFGPY04 ɾ )5.-קࠂ ɾ 8FC$- ɾ )551 ɾ&$."4DSJQU ɾ'JSFGPY0457 ɾ$444OBQTIPU ɾ 'JSFGPYԆ௕  αϙʔτ൛ ɾ )5.- ࠷ऴ૲Ҋ  ެ։ ɾ 8FC(- ɾ 8$ ઃཱ ɾ /FUTDBQF/BWJHBUPS  ͕ࢢ৔Λ੮ר͢Δ ɾ :BIPP αʔϏε ։࢝ ɾ 8FC.ެ։ ɾ$444OBQTIPU ɾ +BWB ొ৔ ɾ Πϯλʔωοτ  ར༻ऀͷٸ૿ ɾ ϒϥ΢βઓ૪ܹԽ ɾ $44 קࠂ ɾ )551 ɾ .PTBJD ͕ࢢ৔Λ  ੮ר͢Δ   ೥Ͱ  ສ  μ΢ϯϩʔυ ɾ )551 ɾ Πϯλʔωο τ઀ଓ  ϗετ͕  ສΛ  ௒͑Δ ɾ Πϯλʔωο τ઀ଓ  ϗετ͕  ສΛ  ௒͑Δ ɾ೔ຊ࠷ॳͷ 8FC  αΠτ͕ެ։ ɾ ϒϥ΢βઓ૪  ࣄ্࣮ͷऴᖼ ɾ *& γΣΞٸ૿ ɾ $44 קࠂ ɾ 9.- קࠂ ɾ %0. קࠂ ɾ&$."4DSJQUOE ɾ&$."4DSJQUSE ɾ )5.- קࠂ ɾ )551 ɾ&$."4DSJQUTU ɾ "KBY ɾ 8FC ɾ 8$)5.-8( ઃཱ ɾ $444OBQTIPU ɾ )5.- ૲Ҋެ։ ɾ 8$9)5.-8( ׆ಈऴྃ ɾ&$."4DSJQUUI ɾ ถϦϋϏϦςʔ  γϣϯ๏  ৚  ࢪߦ։࢝ ɾ ϒϩʔυόϯυ  ීٴ͕೔ຊͰ࢝ ·Δ ɾ "0- ͱ .JDSPTPGUɺ  ಠې๏ૌুͰ࿨ղ  ϒϥ΢βઓ૪ʹ  ऴࢭූ ɾ ϒϩάϒʔϜ  ೔ຊͰ࢝·Δ ɾ  ʮઓޙੈ୅ʯ  ϒϥ΢βͷ୆಄ ɾ 8)"58( ઃཱ ɾ +*49 ੍ఆ ɾ (3&&ɺNJYJ ͳͲ  4/4 ͕ϒʔϜʹ ɾ "0-/FUTDBQFɺ  .JDSPTPGU Λ  ಠې๏ҧ൓Ͱఏૌ /$4" $&3/ .PTBJD $PNNVOJDBUJPOT .JDSPTPGU "QQMF 4QZHMBTT 0QFSB 4PGUXBSF ,%& 1SPKFDU (PPHMF BTNKT BTNKT .P[JMMB$MBTTJD (FDLP 8FC ඪ ४ ٕ ज़ Λ ߴ ౓ ʹ α ϙ ʔ τ 5SJEFOU &EHF #MJOL 1SFTUP 8FC,JU /FUTDBQF/BWJHBUPS ʢίʔυωʔϜʮ.P[JMMBʯ ʣ /FUTDBQF/BWJHBUPS /FUTDBQF/BWJHBUPS 4UBOEBSE&EJUJPO /FUTDBQF/BWJHBUPS (PME&EJUJPO /FUTDBQF$PNNVOJDBUPS /FUTDBQF$PNNVOJDBUPS .P[JMMB"QQMJDBUJPO4VJUF .P[JMMB"QQMJDBUJPO4VJUF <.JMFTUPOF ʙ > ʢίʔυωʔϜʮ4FBNPOLFZʯ ʣ /FUTDBQF .P[JMMB"QQMJDBUJPO4VJUF 'JSFGPY%FWFMPQFS&EJUJPO J04൛'JSFGPY 4FB.POLFZ    /FUTDBQF .P[JMMB'JSFCJSE Firefox        .P[JMMB"QQMJDBUJPO4VJUF .P[JMMB1IPFOJY     ϦϦʔε ୈੈ୅+BWB4DSJQUΤϯδϯ ϋʔυ΢ΣΞΞΫηϥϨʔγϣϯ ɹɹɹɹ8FC(- 'JSFGPY4ZOD ɹɹɹɹ"OESPJE൛ϦϦʔε ୈੈ୅+BWB4DSJQUΤϯδϯ ϋʔυ΢ΣΞΞΫηϥϨʔγϣϯ ɹɹɹɹ8FC(- 'JSFGPY4ZOD ɹɹɹɹ"OESPJE൛ϦϦʔε "OESPJE൛/BUJWF6* ϦϦʔε "OESPJE൛/BUJWF6* ϦϦʔε Ҏޙ 'JSFGPYͷվળ఺Λ औΓೖΕͯߋ৽͕ଓ͘ &QJD(BNFT ͱ 6OSFBM&OHJOF ΛҠ২ 'JSFGPYͱ ฒߦͯ͠։ൃ Ҏޙ 'JSFGPYͷվળ఺Λ औΓೖΕͯߋ৽͕ଓ͘ &QJD(BNFT ͱ 6OSFBM&OHJOF ΛҠ২ 6OJUZ͕8FC(- ग़ྗʹਖ਼ࣜରԠ 8FC(- 'JSFGPYͱ ฒߦͯ͠։ൃ 8FC(- *&͕࠷ޙͷ ϝδϟʔόʔδϣϯʹ *&͕࠷ޙͷ ϝδϟʔόʔδϣϯʹ #MJOLΤϯδϯ #MJOLΤϯδϯ (PPHMF(MBTT (PPHMF(MBTT "MQIBCFU ઃཱ "MQIBCFU ઃཱ 1SFTUP Τϯδϯͷ 0QFSB ࠷ऴόʔδϣϯ ΤϯδϯΛ8FC,JU ʹมߋ ΤϯδϯΛ8FC,JU ʹมߋ 1SFTUP Τϯδϯͷ 0QFSB ࠷ऴόʔδϣϯ ΤϯδϯΛ#MJOL ʹมߋ ΤϯδϯΛ#MJOL ʹมߋ 6OJUZ͕8FC(- ग़ྗʹਖ਼ࣜରԠ .PTBJD ͷݖརΛ ८Γରཱɺ཭൓ ϥΠηϯεڙ༩ ϥΠηϯεڙ༩ γϛϡϨʔλ IUUQMJOFNPEFDFSODIXXXIZQFSUFYU8885FSNTIUNM εΫϦϓτ΍ελΠϧγʔτʹ ରԠͨ͠ߴػೳϒϥ΢β ੈքॳͷ.BD༻ϒϥ΢β ΛϦϦʔε ੈքॳͷ 8JOEPXT༻ϒϥ΢β ,)5.-8 ͷ ։ൃΛ։࢝ .BD049W $IFFUBI ϦϦʔε .BD049W 1BOUIFS ϦϦʔε Ξυϫʔζ αʔϏε։࢝ (PPHMF%FTLUPQ ϦϦʔε (PPHMF.BQT αʔϏε։࢝ (NBJM αʔϏε։࢝ (PPHMF1BDL ϦϦʔε (PPHMF%PDT 4QSFBETIFFUT αʔϏε։࢝ "OESPJE ϦϦʔε 7 (PPHMF αʔϏε։࢝ .PTBJD ͷ ϥΠηϯεΛऔಘ 8JOEPXT7JTUB ϦϦʔε 8JOEPXT9141 ϦϦʔε 8JOEPXT.F ϦϦʔε 8JOEPXT91 ϦϦʔε 8JOEPXT ϦϦʔε 8JOEPXT ϦϦʔε *& ͱ 8JOEPXT Λ౷߹ 8JOEPXT 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             .VMUJ5PSH0QFSB 0QFSB    ϑΟʔυϦʔμʔ *3$ ΫϥΠΞϯτ ৽ϨϯμϦϯά Τϯδϯ      ιʔείʔυΛެ։ *& ͷ͝ઌ૆༷΋ .PTBJDɻ ࣮͸ *& ΋਌ੰͩͬͨΜͩͶɻ ೥·Ͱ͸ɺ /FUTDBQF/BWJHBUPS ͕ .BDͷඪ४8FC ϒϥ΢βͩͬͨΜͩΑɻ ͜ͷ͜Ζ͔Β*&Λ࢖͏ਓ͕͍͢͝ ੎͍Ͱ૿͑ͨΜͩɻ θϩ͔Β࡞ΔΜ͡Όͳͯ͘ ͢Ͱʹ͋ͬͨ෺Λվྑͯ͠ ࢖ͬͨΜͩͶɻ 'JSFGPY ͷԕ͍ ͝ઌ૆༷ͩΑ ʂ ʮ"DJEςετʯ ͸ ϒ ϥ ΢β͕ͪΌΜͱ࡞ΒΕ ͍ͯΔ͔Ͳ͏͔ͷ෼͔ Γ΍͍͢໨҆ʹ࢖ΘΕ ͯΔΜͩɻ ϑΟογϯά࠮ٗܯࠂػೳ΍ λϒػೳ͸ɺ ΋͏෇͍ͯΔͷ ͕౰ͨΓલʹͳͬͯΔΜͩͶɻ ࠷ۙ஫໨͞ΕͯΔٕज़ ͷ΄ͱΜͲ͸ɺ ͜ͷࠒ ʹ͸΋͏ग़ଗͬͯͨΜ ͩͶɻ *&͕͓΍͢Έͯ͠Δؒɺ ΈΜͳҰੜݒ໋ ͕Μ͹ͬͯͨΜͩΑɻ 'JSFGPY΍ଞͷϒϥ΢β͕ ͕Μ͹ͬͯͩΜͩΜਓؾ͕ ग़͖͔ͯͨΒɺ *&΋·ͨ ͕Μ͹Γ࢝ΊͨΜͩɻ ͜Ε͔Β΋ɺ ΑΓ࢖͍΍͘͢ɺ ΑΓศརʹͲΜͲΜਐา͍ͯ͘͠Αɻ ָ͠Έʹͯͯ͠Ͷʂ ͜͏ͯ͠ίϛϡχςΟͰ ։ൃΛҾ͖ܧ͛Δͷ΋ ΦʔϓϯιʔεͳΒͰ͸ͩͶʂ ʮ44- ʢ҉߸Λ࢖ͬͨ҆શͳ௨৴ʣ ʯ ΍ʮ+BWB4DSJQUʯ͸ɺ ͜ ͷ ͜ Ζ ʹ /FUTDBQF͕࡞ͬͨΜͩΑɻ Πϯλʔωοτͱ͍͑͹ ωοτεέʔϓʂ ͍ͬͯ͏͘Β͍ͷେਓؾ ͩͬͨΜͩɻ Έ Μ ͳ ʹ ڠ ྗͯ͠ ΋ Β͚ͬͨͲɺ ࠷ॳ͸͏· ͍͘ ͔ ͳ ͔ ͬͨ Μ ͩ ʜʜ ੈքॳͷ XFCϒϥ΢β͸ 8PSME8JEF8FCͩΑ ·ͩ·ͩ४උෆ଍ͩͬ ͔ͨΒɺ *&ʹ͞Βʹࠩ Λͭ ͚Β ΕͪΌͬͨ ʜʜ ϘϥϯςΟΞ׆ಈͰ ͣͬͱࢧ͑ͯ͘ΕͨΜͩΑɻ ΍ͬͱ'JSFGPYͷग़൪ʂ ΞϝϦΧͷ৽ฉʹ޿ࠂ͕ͷͬͨΓͯ͠ɺ ·ΔͰ͓ࡇΓΈ͍ͨͩͬͨΑɻ ʮ(FDLPʯ ͍ͬͯ͏ ৽͍ٕ͠ज़ͷ͓͔͛Ͱੜ ·ΕมΘͬͨΜͩΑʂ ,%&͸ɺ 8JOEPXT΍.BDͷΑ͏ͳ؀ڥΛࣗ ༝ͳιϑτ΢ΣΞͰ࡞ΔϓϩδΣΫ τͩΑɻ ͦͷҰ෦ͱͯ͠8FCϒϥ΢β͕ඞཁͩͬͨ Μͩɻ ൪໨ͷϒϥ΢β-JOF.PEF#SPXTFS͸ γϛϡϨʔλͰମݧͰ͖ΔΑ 0QFSB͸/FUTDBQF΍*&ͱ ಉ͘͡ Β͍લ͔Β͋ͬͨΜͩͶɻ ͜ͷ͜Ζ͸*&ͱ͓ޓ͍ʹ ͸͛͘͠ڝ૪ͯͨ͠ΜͩͶɻ ήʔϜػฒͷ%ήʔϜ͕ ಈ͘Α͏ʹͳͬͨΜͩΑʂ ੈքॳͷ։ൃऀ޲͚ ϒϥ΢βʂ "QQ MFͱ( P P HM Fͷ 8FC,JUڞಉ։ൃ͕ऴྃ͠ $ISPNF͸෼ذͨ͠#MJOL ΤϯδϯʹͳͬͨΜͩ ແྉԽ͞ΕΔલ͸ɺ πʔϧόʔʹ޿ࠂ͕ ෇͍ͯͨΜͩΑɻ Έͳ͞Μ͸ɺීஈ࢖͍ͬͯΔ 8FC ϒϥ΢β͕Ͳ͏΍ͬͯੜ·Ε͖͔ͯͨɺͲΜͳ෩ʹਐา͖͔ͯͨ͠Λ஌͍ͬͯ·͔͢ʁɹ ࢁ͋Γ୩͋Γͷ 'JSFGPY ͷੜཱ͍ͪͱ͋Θͤͯɺ͍ΖΜͳϒϥ΢βͷਐาͷྺ࢙Λௐ΂ͯΈ·͠ΐ͏ʂ フォクすけと 学ぼう! .P[JMMB+BQBO͜ͷ࡞඼͸ΫϦΤΠςΟϒɾίϞϯζදࣔඇӦརࠃࡍϥΠηϯεͷԼʹఏڙ͞Ε͍ͯ·͢ɻ .P[JMMBɺ 'JSFGPYɺ 'JSFGPYϩΰ͸ɺ ถࠃ.P[JMMB'PVOEBUJPOͷถࠃ͓Αͼͦͷଞͷࠃʹ͓͚Δ঎ඪ·ͨ͸ొ࿥঎ඪͰ͢ɻ ͦͷ΄͔هࡌ͞Ε͍ͯΔ঎඼໊͸ɺ ֘౰͢Δ֤ࣾͷ঎ඪ·ͨ͸ొ࿥঎ඪͰ͢ɻ  ΅͘ͱ͍ͬ͠ΐʹ ϒϥ΢βͷྺ࢙Λษڧ ͯ͠ΈΑ͏ʂ ࢁંΓ ࢁંΓ ୩ંΓ ୩ંΓ CC BY-NC 4.0 Mozilla Japan https://www.mozilla.jp/blog/entry/10552/ ΢Σϒϒϥ΢β ͷྺ࢙
  6. 43.
  7. 45.

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  8. 46.

    Chrome Opera Safari Firefox Internet Explorer 8FCLJU 7 1SFTUP $BSBLBO

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  9. 47.

    Chrome Opera Safari Firefox Internet Explorer 1SFTUP $BSBLBO 8FCLJU +BWB4DSJQU

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  10. 50.

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  11. 51.

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  12. 53.

    Chrome Opera Safari Firefox Internet Explorer 8FCLJU 7 1SFTUP $BSBLBO

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  13. 54.

    Chrome Opera Safari Firefox Internet Explorer #MJOL 7 #MJOL 7

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  14. 59.

    Chrome Opera Vivaldi Safari Firefox Internet Explorer Edge #MJOL 7

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  15. 66.

    Chrome Opera Vivaldi #MJOL 7 #MJOL 7 #MJOL 7 αΠυόʔ

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  16. 67.

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  17. 70.

    Chrome Safari Firefox Internet Explorer Edge #MJOL 7 8FCLJU +BWB4DSJQU

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  18. 71.

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  19. 72.

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  20. 83.

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  21. 104.

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  22. 105.

    JSͰΞχϝʔγϣϯͤ͞Δͱ… • JSΠϯλʔϓϦλ͕JavaScriptΛ࣮ߦ • DOMπϦʔΛมߋ • ϨϯμϦϯάΤϯδϯ͕ελΠϧΛ࠶ܭࢉ • ϨΠΞ΢τΛੜ੒ •

    ϨΠϠʔ͝ͱʹඳըΛੜ੒ • ϨΠϠʔΛ߹੒͠࠷ऴతͳϨϯμϦϯά݁ՌΛੜ੒ &WBMVBUF $BMDVSBUF 4UZMFT -BZPVU BLBSFqPX 1BJOU $PNQPTJUF-BZFST ͜ͷͱ͖'PSDFE4ZODISPOPVT-BZPVUͱݺ͹ΕΔϨΠΞ΢τܭࢉॲཧ͕ ૸Δͱ+4ͷ࣮ߦΛϒϩοΫͯ͠ϨΠΞ΢τܭࢉΛߦ͏ɻ ྫFMFNPGGTFU-FGUFMFNHFU$MJFOU3FDUT FMFNDMJFOU8JEUI ͜ΕΒͷ஋Λਖ਼͘͠஌Δʹ͸ݱࡏͷϨΠΞ΢τʹ͍ͭͯϨϯμϦϯάΤϯδϯ͕ ܭࢉΛߦ͏ඞཁ͕͋ΔͷͰɺ͜ΕΒͷ஋Λ༻͍ͨ+4ΞχϝʔγϣϯΛهड़͢Δͱ ࣮ࡍͷϨϯμϦϯάͱ͸ผͰϨΠΞ΢τܭࢉ͕ਵ࣮࣌ߦ͞ΕΔͨΊ ඇৗʹ஗͘ͳͬͯ͠·͏
  23. 106.

    JSͰΞχϝʔγϣϯͤ͞Δͱ… • JSΠϯλʔϓϦλ͕JavaScriptΛ࣮ߦ • DOMπϦʔΛมߋ (include Forced Synchronous Layout) •

    ϨϯμϦϯάΤϯδϯ͕ελΠϧΛ࠶ܭࢉ • ϨΠΞ΢τΛੜ੒ • ϨΠϠʔ͝ͱʹඳըΛੜ੒ • ϨΠϠʔΛ߹੒͠࠷ऴతͳϨϯμϦϯά݁ՌΛੜ੒
  24. 107.

    JSͰΞχϝʔγϣϯͤ͞Δͱ… • JSΠϯλʔϓϦλ͕JavaScriptΛ࣮ߦ • DOMπϦʔΛมߋ (include Forced Synchronous Layout) w

    ϨΠΞ΢τΛੜ੒ w ϨΠϠʔ͝ͱʹඳըΛੜ੒ w ϨΠϠʔΛ߹੒͠࠷ऴతͳϨϯμϦϯά݁ՌΛੜ੒ w ϨϯμϦϯά݁Ռ͔Β஋Λฦ٫ • ϨϯμϦϯάΤϯδϯ͕ελΠϧΛ࠶ܭࢉ • ϨΠΞ΢τΛੜ੒ • ϨΠϠʔ͝ͱʹඳըΛੜ੒ • ϨΠϠʔΛ߹੒͠࠷ऴతͳϨϯμϦϯά݁ՌΛੜ੒
  25. 116.

    Chrome Safari Firefox Internet Explorer Edge #MJOL 7 8FCLJU +BWB4DSJQU

    $PSF 5SJEFOU $IBLSB (FDLP 4QJEFS .POLFZ &EHF)5.- $IBLSB ϨϯμϦϯάΤϯδϯ +4ΠϯλʔϓϦλ
  26. 120.

    Chrome Opera Vivaldi #MJOL 7 #MJOL 7 #MJOL 7 αΠυόʔ

    ΫΠοΫίϚϯυ εςʔλεόʔ ը໘Լ෦
  27. 121.

    JSͰΞχϝʔγϣϯͤ͞Δͱ… • JSΠϯλʔϓϦλ͕JavaScriptΛ࣮ߦ • DOMπϦʔΛมߋ • ϨϯμϦϯάΤϯδϯ͕ελΠϧΛ࠶ܭࢉ • ϨΠΞ΢τΛੜ੒ •

    ϨΠϠʔ͝ͱʹඳըΛੜ੒ • ϨΠϠʔΛ߹੒͠࠷ऴతͳϨϯμϦϯά݁ՌΛੜ੒ &WBMVBUF $BMDVSBUF 4UZMFT -BZPVU BLBSFqPX 1BJOU $PNQPTJUF-BZFST
  28. 122.

    ͞Βʹৄ͘͠஌Γ͍ͨ৔߹ • How browsers work - http://taligarsiel.com/Projects/ howbrowserswork1.htm • ϒϥ΢βͷ಺෦ͰԿ͕ى͖͍ͯΔͷ͔ʹ͍ͭͯ

    • Demystifying (JavaScript) Engines - https://github.com/ a0viedo/demystifying-js-engines • JavaScriptΤϯδϯͷ಺෦ߏ଄ʹ͍ͭͯཧղ͢ΔͨΊͷઆ ໌ɾؔ࿈࿦จͳͲ΁ͷϦϯΫू • ͦͷଞࢀߟURLͳͲ: http://bit.ly/pastak-shownote-20170217