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Web Frontend Performance Tuning TIPS *n

Ayumu Sato
January 25, 2014

Web Frontend Performance Tuning TIPS *n

Frontrend in Fukuoka http://frontendfrogs.org/frontrend/ で使用したスライドです。本編45分。

Ayumu Sato

January 25, 2014
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  1. 1FSGPSNBODF
    5VOJOH5*14O
    'SPOUSFOEJO'VLVPLB
    "ZVNV4BUP!BIPNV
    !
    GSPOUSFOE@GGB

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  2. ࠤ౻า
    ͞ͱ͏ ͋ΏΉ

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  3. ϋϯυϧωʔϜ
    BIPNV
    !

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  4. IUUQBIPNV
    ڵຯ΋ͬͯͩͬͨ͘͞Βθώ

    View Slide

  5. ຊ୊

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  6. 1BHF4QFFE
    PS
    :4MPX
    ීஈɺݟͯΔํʁ

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  7. ͋Δ੍࡞ͱ͓٬͞Μͱ
    ͔͍͍ͬ͜αΠτ

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  8. "
    #
    ௒͔͍͍ͬ͜
    αΠτͭ͘ΕͨΘʔ
    !
    ͓٬͞Μ΋େຬ଍ͩΘʔ
    ੍࡞ऀ

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  9. $
    #
    ࠓɺग़ઌͳΜͰ͚͢Ͳ
    αΠτ։͚ͳ͘ͳ͍Ͱ͔͢ʁ
    ͓٬͔Βి࿩

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  10. "
    #
    ͋Εʔ
    ΅͘ͷ1$Ͱ͸։͚·͢Αʁ
    !
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  11. $
    #
    ͦ͏Ͱ͔͢
    !
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    ্͕Βͳ͍ΜͰ͚͢Ͳ
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    ͓٬͔Βి࿩

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  12. "
    #
    ͑ʔɺࠔͬͨͳ͊
    !
    ͡Ό͋΋ͬͱ
    ը૾ͱ͔࢖ͬͯ
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    ੍࡞ऀ

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  13. $
    #
    Θ͔Γ·ͨ͠
    !
    ɾɾɾ
    ͓٬͔Βి࿩

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  14. ϞόΠϧͰॏͯ͘։͚ͳ͍
    ։͍ͯ΋εΫϩʔϧ͕ॏ͍ɾΧΫΧΫ
    Ϣʔβʔʹ཭୤͞Εͯ͠·͏
    ίϯόʔδϣϯʹࢸΒͳ͍

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  15. ʊਓਓਓਓਓਓਓਓਓʊ
    ʼɹಥવͷܖ໿ऴྃɹʻ
    ʉ:?:?:?:?:?:?:?:ʉ

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  16. ͦ͏ͳΒͳ͍ͨΊʹ
    ஌͓͖͍ͬͯͨ5*14Λ
    ঺հ͠·͢

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  17. ύϑΥʔϚϯεͷಈػ
    ߟ͑ํͱಋೖ
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    ·ͱΊ

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  18. *OUSPEVDUJPO
    ߟ͑ํͱಋೖ

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  19. 'SPOUFOE
    1FSGPSNBODF
    ϑϩϯτΤϯυͱύϑΥʔϚϯεͷؔ܎

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  20. IUUQXXXTUFWFTPVEFSTDPNCMPHUIFQFSGPSNBODFHPMEFOSVMF

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  21. 4UFWF
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  22. View Slide

  23. ▻▻▻▻▻
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  25. &
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  26. &
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  28. Ћ
    ΋͏ͻͱͭŋŋŋ

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  29. *OUFSBDUJPO69
    ϢʔβʔͱΠϯλʔϑΣʔεͷର࿩

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  30. εΫϩʔϧ͕஗͍
    ΧΫΧΫ͢ΔαΠτ

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  31. ϘλϯΛԡͯ͠΋
    ൓Ԡ͕ͳ͍αΠτ

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    ΠϥΠϥ͢ΔαΠτ

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  33. ࢖༻ײɾ৺஍Α͞΋
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  34. ϑϩϯτͷ޻෉Ͱ
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  37. IUUQEFWFMPQFSZBIPPDPNQFSGPSNBODFSVMFTIUNM

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  38. ͙͢ʹ࢖͑ͯ
    ཁ఺Λ͓͑͞΍͍͢

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  39. 5*14ˠཧ༝Λ஌Δ

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  40. ࣌ͱ৔߹ʹΑͬͯ
    ൑அͰ͖ΔΑ͏ʹ͢Δ

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  41. /FUXPSLJOHO
    ωοτϫʔΫίετ

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  42. 3FEVDF
    3FRVFTUT4J[F
    ϦΫΤετͷ਺ͱϑΝΠϧαΠζΛݮΒ͢

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  43. "CPWFUIFGPME
    ϑΝʔετϏϡʔΛ଎͘ݟͤΔ

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  44. ը૾Ϧιʔε͸ඞͣ
    ࠷దԽͯ͠αΠζΛ཈͑Δ
    ը࣭Λอͪͳ͕ΒσʔλαΠζͷѹॖޮ཰Λ
    ߴΊͨΓɺ༨෼ͳ৘ใΛ࡟আͨ͠Γ͢Δ
    !
    !
    ௿ίετɾߴϦλʔϯͳରࡦͳͷͰ
    ͜Ε͕΍Εͯͳ͍ͱɺ͔ͳΓϞολΠͳ͍

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  45. ςΩετϦιʔεʹ͸
    ࠷খԽΛద༻͢Δ
    ͍ΘΏΔ.JOJGZॲཧɹεϖʔε΍վߦͳͲΛ
    औΓআ͍ͯɺϑΝΠϧαΠζΛখ͘͢͞Δ
    !
    !
    ߋ৽͢ΔͨͼʹखಈͰ΍Βͳ͍
    ඞͣπʔϧΛ࢖ͬͯࣗಈԽ͢Δ

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  46. IUUQBMQIBQJYFMTDPNQSFQSPT

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  47. IUUQJODJEFOUDPNDPEFLJU

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  48. IUUQHSVOUKTDPN

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  49. $444QSJUFTͱ
    %BUB63*Λ༗ޮʹ࢖͏
    ը૾Λຕʹ·ͱΊͨΓɺ$44ͷதʹจࣈྻͰ
    ຒΊࠐΉ͜ͱͰɺϦΫΤετ਺Λઅ໿Ͱ͖Δ
    !
    !
    ໨҆,#Ҏ಺Ͱ͓͞·ΔΑ͏ʹͯ͠
    ͻͱͭͷϑΝΠϧΛେ͖͗͘͢͠ͳ͍Α͏஫ҙ

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  50. %BUB63* $444QSJUFT
    ,
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    ,
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    div {
    width: 100px;
    height: 50px;
    border-radius: 3px;

    ..
    .

    View Slide


  51. όΠφϦσʔλΛ
    จࣈྻͱͯ͠ຒΊࠐΉ
    *
    $44
    background-image: url(“data:image/
    jpeg;base64,/9j4AAQSkZJRgABAQAA
    AQABAAD2wBDAAMCAggICAgICAgI
    CAgICAgICAgICAgICAgICAgICAgICA
    gICAgICAgICAgICAoICAgICQoKCAg
    MDAoIDAgICQj2wBDAQMEBAYFBgo
    GBgoNDAwNDQ0NDQwMDQ0MDA0
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    wMDAwMDAwMDAwMDAwMDAwMD
    AwMDAzwAARCADIAMgDAREAAhEB
    AxEB8QAHQAAAgEFAQEAAAAAAAA
    AAAAAAQIAAwQFBgcICfEAEUQAAIB
    AgMEBwMJBgUDBQAAAAECAAMRB
    BIhBQYxQQcIE1FhcZEiMoEjQlJicqGx
    wfAUM4KissIVNFPR8WOSoyRDc4Ph8
    QAGwEAAgIDAQAAAAAAAAAAAAAA
    AAECAwQFBgf/xAAvEQACAgEEAg…

    View Slide

  52. ΋͠.#΋͋Δͱʜ
    .#ಡΈࠐ·ΕΔ·Ͱ
    ελΠϧ͕ద༻͞Εͳ͍
    %BUB63*ͷը૾΋දࣔ͞Εͳ͍
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    *
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    ,
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    div {
    width: 100px;
    height: 50px;
    border-radius: 3px;

    ..
    .

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  53. ͢΂ͯͷը૾Λ3FUJOB޲͚ʹ
    YͰ༻ҙ͠ͳͯ͘΋Α͍
    େ͖͘ݟͤͳ͍͍ͯ͘αϜωΠϧը૾͸
    ͦ΋ͦ΋YͰे෼ͳ͜ͱ͕ଟ͍
    !
    !
    ςΩετը૾΍ΩʔϏδϡΞϧ͸
    ͕͢͞ʹY͡Όͳ͍ͱਏ͍

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  54. &YQJSFTͳͲͷϔομʔͱ
    H[JQѹॖΛඞͣద༻͢Δ
    &YQJSFTϔομʔͰΩϟογϡΛ׆༻ͯ͠
    H[JQͷઃఆͰసૹྔΛ͓͑͞Δ
    !
    !
    ඇৗʹॳาత͕ͩɺݟಀͯ͠͠·͏ͱ
    μϝʔδ͕େ͖͍ͷͰඞͣνΣοΫ͍ͨ͠

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  55. IUUQEFWFMPQFSTHPPHMFDPNTQFFEQBHFTQFFEJOTJHIUT

    View Slide

  56. XXXHPPHMFDPNBOBMZUJDT

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  57. IUUQXXXXFCQBHFUFTUPSH

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  58. 3FOEFSJOHO
    ϨϯμϦϯά

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  59. "WPJE$PNQMFYJUJFT
    ෳࡶʹ͠ͳ͍

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  60. ϨΠΞ΢τɾ࠶഑ஔ͕
    ஗Εͯൃੜ͠ͳ͍Α͏ʹ͢Δ
    Ϩεϙϯγϒͳը૾΋ղ૾౓͝ͱʹ
    IFJHIU͚ͩͰ΋ܾΊΕ͹ΨίͬͯͳΒͳ͍
    !
    !
    ྫ͑͹JNHͷXJEUI IFJHIU͕ͳ͍ͱ
    ը૾ಡΈࠐΈ࣌ʹΨΫͬͱͳͬͯ͠·͏

    View Slide




  61. ߴίετͳ$44͸
    ৻ॏʹऔΓѻ͏
    CPYTIBEPX΍CPSEFSSBEJVTͳͲͷ
    ͍ΘΏΔ$44͸ඳըίετ͕௿͘ͳ͍
    !
    !
    ૊Έ߹ΘͤΔͱɺඳըύε͕ෳࡶʹͳΔͷͰ
    ಛʹඳըύϑΥʔϚϯε͕ྼԽ͠΍͍͢

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  62. #
    ͜ΕΛͷ
    ج४ͱ͢Δ

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  63. #

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  64. #

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  65. (16ΞΫηϥϨʔγϣϯ͕
    ద༻͞ΕΔ$44Λར༻͢Δ
    USBOTMBUFEͳͲ(16ΞΫηϥϨʔγϣϯ͕
    ద༻͞ΕΔ$44Λ࢖͏ͱ׈Β͔ʹಈ͘
    !
    !
    ͓·͡ͳ͍ͱͯ͠࢖͍͗͢Δͱ
    Ωπ͍ͬ͠΃ฦ͕͋͠Δ

    View Slide

  66. View Slide

  67. View Slide

  68. IUUQTEFWFMPQFSTHPPHMFDPNFWFOUTJPTFTTJPOT

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  69. $PNQPTJUJOH-BZFS PO(16

    /PSNBM-BZFS FWFSZ$16

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  70. (165FYUVSF
    #
    ߋ৽͕͋Ε͹
    ඳըσʔλΛ
    (16ʹ࠶సૹ
    #
    ඳըσʔλΛ
    Ωʔϓ͠ͱ͍ͯ
    (16্Ͱ߹੒

    View Slide




  71. #
    ޿͍ൣғΛ
    ࠶ඳը͠ͳ͍͔Β
    εϜʔζ
    #
    ϨΠϠʔؙ͝ͱΛ
    ૢ࡞ͤ͞Δ͚ͩͰ
    αΫαΫҠಈ

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  72. 4DSJQUJOHO
    εΫϦϓτॲཧ

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  73. 5IJOL
    $PNQVUJOH
    ϒϥ΢βͷؾ࣋ͪʹͳͬͯॻ͘

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  74. K2VFSZͷηϨΫλΛ
    ͖ͪΜͱΩϟογϡ͢Δ
    K2VFSZʹηϨΫλΛ౉ͯ͠ཁૉΛબ୒͢Δͱ͖
    ୳ࡧ݁ՌΛฦ͢ͷͰɺͦΕΛΩϟογϡ͢Δ
    !
    !
    Ωϟογϡ͠ͳ͍ͱɺຖճηϨΫλΛ૸Βͤͯ
    ཁૉΛ୳ࡧ͍ͯ͠Δ͜ͱʹͳͬͯ͠·͏

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  75. !
    $(‘#list’).append(‘Item1’);
    $(‘#list’).append(‘Item2’);
    $(‘#list’).append(‘Item3’);
    $(‘#list’).append(‘Item4’);
    $(‘#list’).append(‘Item5’);
    !

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  76. var $list = $(‘#list’);
    $list.append(‘Item1’);
    $list.append(‘Item2’);
    $list.append(‘Item3’);
    $list.append(‘Item4’);
    $list.append(‘Item5’);
    !

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  77. var $list = $(‘#list’);
    $list.append(‘Item1’);
    $list.append(‘Item2’);
    $list.append(‘Item3’);
    $list.append(‘Item4’);
    $list.append(‘Item5’);
    !

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  78. var $list = $(‘#list’);
    // ͪΐͬͱۃ୺Ͱ͕͢…
    $list.append(‘Item1’ +
    ’Item2’ +
    ‘Item3’ +
    ‘Item4’ +
    ‘Item5’);
    !

    View Slide




  79. Πϕϯτ͸%FMFHBUFΛ
    ࢖ͬͯ·ͱΊΔ
    ୔ࢁ͋Δɾಈతʹ૿͑ΔՄೳੑ͕͋Δཁૉ΁ͷ
    Πϕϯτ͸ɺ%FMFHBUF ҕৡ
    Λ࢖͏
    !
    ਺ඦηϧ͋ΔΤΫηϧ෩ͳϑϩϯτ࣮૷Λ૝૾ʜ

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  80. // ͨ͘͞Μͷ TD ΁ɺݸผʹΠϕϯτΛషΔ
    $(‘table td’).on(‘click’, function() {
    // do something
    });
    !
    // ͻͱͭͷ table ʹΠϕϯτΛషΔ
    $(‘table’).on(‘click’, ‘td’, function() {
    // do something
    });

    View Slide

  81. // ͨ͘͞Μͷ TD ΁ɺݸผʹΠϕϯτΛషΔ
    $(‘table td’).on(‘click’, function() {
    // do something
    });
    !
    !


    ηϧ1
    ηϧ2
    ηϧ3


    #



    2


    View Slide

  82. // ͻͱͭͷ TABLE ʹΠϕϯτΛషΔ
    $(‘table’).on(‘click’, ‘td’, function() {
    // do something
    });
    !
    !


    ηϧ1
    ηϧ2
    ηϧ3


    #



    !
    2


    View Slide




  83. TDSPMM SFTJ[FͷΠϕϯτΛ
    ؒҾ͍ͯॲཧ͢Δ
    UISPUUMF
    ɹ࿈ଓݺͼग़͠ΛOϛϦඵͷपظʹؒҾ͍࣮ͯߦ
    !
    EFCPVODF
    ɹOϛϦඵҎ಺ͷ࿈ଓݺͼग़͠Λແࢹͯ͠
    ɹݺͼग़͕͓͠͞·ͬͨΒ࣮ߦ

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  84. /* Underscore.JS */
    !
    // scroll ʹ߹ΘͤͯҐஔΛߋ৽͢ΔԿ͔
    var throttled = _.throttle(updatePos, 100);
    $(window).scroll(throttled);
    !
    // resize ʹ൓Ԡͯ͠ϨΠΞ΢τ͠௚͢Կ͔
    var lazyLayout = _.debounce(calcLayout,300);
    $(window).resize(lazyLayout);

    View Slide

  85. UISPUUMFNT
    EFCPVODFNT
    NT͝ͱʹൃՐ͢ΔΠϕϯτ

    View Slide




  86. ҙຯͷബ͍ϕϯνϚʔΫʹ
    ࿭Θ͞Εͳ͍ɾؾʹ͠ͳ͍
    ࠣࡉ͗͢ΔύϑΥʔϚϯεΑΓ͸
    ه๏ͷ౷ҰੑɾՄಡੑ͕༏ઌ͞ΕΔ΂͖
    !
    !
    ଎͍ɾ஗͍ͷϕϯνϚʔΩϯά͸ඇৗʹେࣄ
    ͚ͲɺͦͷॲཧΛίʔϧ͢Δස౓Λߟ͑Δ

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  87. ϝϞϦϦʔΫͷճආ
    +4Τϯδϯͷ࠷దԽߟྀ
    <&>.*/
    #SPXTFS$PNQVUJOH4USVDUVSF
    !
    ৄ͘͠͸ɺ͜ͷ࣍ͷ࣍ͷηογϣϯͰʂ
    !
    Ͱ΋ͪΐͬͱ͚ͩʜ

    View Slide

  88. IUUQXXXIUNMSPDLTDPNFOUVUPSJBMTQFSGPSNBODFNZTUFSZ

    View Slide

  89. function updateSprites(dt) {
    for (var sprite in sprites) {
    sprite.position.x += 0.5 * dt;
    // 20 more lines of arithmetic computation.
    }
    }

    View Slide

  90. function updateSprites(dt) {
    for (var sprite in sprites) {
    updateSprite(sprite, dt);
    }
    }
    !
    function updateSprite(sprite, dt) {
    sprite.position.x += 0.5 * dt;
    // 20 more lines of arithmetic computation.
    }
    ϧʔϓ಺ͷॲཧΛผؔ਺ʹ෼཭͢Δ͜ͱͰ
    ࠷దԽ͕ద༻͞ΕΔΑ͏ʹͳͬͨ Β͍͠

    View Slide

  91. *OUFSBDUJPOO
    ΠϯλϥΫγϣϯ

    View Slide

  92. JO.PCJMF
    ओʹϞόΠϧܥͷ࿩

    View Slide




  93. ஗Ԇϩʔυ࣌ͷ
    ௿ղ૾౓ϓϨʔεϗϧμʔ
    σϑΥϧτͰαΠζٯࢉ,#ͷ௿ղ૾౓
    εΫϩʔϧ஗ԆͰຊདྷͷߴղ૾౓ʹ͔͑͞͠
    !
    !
    ωοτϫʔΫతʹϦΫΤετ਺͸΋ͪΖΜ૿͑Δ
    ͚ͲɺମײΛ্͛ΒΕΔͱ͜Ͱ͸࢖͏΂͖

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  94. ϩʔσΟϯάදࣔ͸
    NT଴ͬͯग़͢
    ͦΕҎԼͰ͋Ε͹ɺϩʔσΟϯάද͕ࣔ໌໓ͯ͠
    ͠·͏͚ͩͰٯʹݟӫ͕͑ྑ͘ͳ͍
    ͜͏͍͏εϐφʔܥͷ΍ͭ

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  95. var timer;
    !
    $(document).on(‘ajaxSend’, function(){
    timer = setTimeout(function() {
    $(‘#loading’).show();
    }, 300);
    });
    !
    $(document).on(‘ajaxComplete’, function(){
    clearTimeout(timer);
    $(‘#loading').hide();
    });

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  96. λοϓ࣌ͷঢ়ଶදݱΛ
    పఈతʹ͚ͭΔ
    ϒϥ΢βඪ४ͷUBQIJHIMJHIUDPMPSͰ΋Α͍͠
    UPVDITUBSU_FOEͰDMBTTΛண୤ͯ͠΋Α͍
    !
    !
    UBQIJHIMJHIUDPMPSΛSHCB
    ʹ
    ઃఆͨ͠··ແ൓Ԡͳ6*ʹ͢Δͷ͸࠷ѱ

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  97. // λον։࢝࣌ʹɺis-activeΫϥεΛ෇༩͢Δ
    $(document).on('touchstart','a',function() {
    $(this).addClass('is-active');
    });
    !
    // λονऴྃ࣌ʹɺis-activeΫϥεΛղআ͢Δ
    $(document).on('touchend', 'a', function() {
    $(this).removeClass('is-active');
    });
    !
    // ݫີʹ͸ɺUIͷछྨʹΑͬͯɺΫϥεண୤ͷͱ͖ʹ
    // σΟϨΠΛ͔͚ͯνϡʔχϯά͠ͳ͍ͱࣗવʹͳΒͳ͍

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  98. ը໘શମͷτϥϯδγϣϯ͸
    ίεύѱ͍ͷͰආ͚Δ
    ΍Ε͹Ͱ͖Δ͕ɺ޿͍ൣғΛαϙʔτ͢Δʹ͸
    ݕূίετɾෆ۩߹ରԠίετ͕ߴ͍
    !
    !
    K2VFSZ.PCJMFͰ͢ΒͰ஍ຯʹͳΓ
    ͷσϞ͸ߋʹফۃతͳײ͡ʹͳ͍ͬͯΔ

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  99. ϞόΠϧʹ͓͚ΔDMJDLͷ
    NTσΟϨΠΛ஌Δ
    ϞόΠϧϒϥ΢β͸μϒϧλοϓͷ൑ఆͷͨΊ
    λοϓ͔ͯ͠ΒDMJDLͷൃੜ͕NT஗Ԇ͢Δ
    !
    ϥΠϒϥϦΛ࢖ͬͯվળ͢Δ͜ͱ͸Ͱ͖Δ
    ୯ͳΔUPVDITUBSU UPVDIFOEͰ͸աහ͗͢Δ

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  100. IUUQVQEBUFTIUNMSPDLTDPNNTUBQEFMBZHPOFBXBZ

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  101. IUUQXXXTJUFQPJOUDPNXBZTQSFWFOUNTDMJDLEFMBZNPCJMFEFWJDFT

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  102. IUUQTEFWFMPQFSTHPPHMFDPNTQFFEQBHFTQFFEJOTJHIUT

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  103. λοϓαΠζ͕খ͍͞ͱ͍͏ܯࠂ

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  104. $PODMVTJPO
    ·ͱΊ

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  105. ΤϯδχΞϦϯά
    ͇
    ΠϯλϥΫγϣϯ

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  106. ΤϯδχΞϦϯάͷ
    ͢΂ͯΛ஌Δ͜ͱ͸
    ೉͍͠

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  107. ΠϯλϥΫγϣϯͷ
    ͢΂ͯΛݕূ͢Δ͜ͱ΋
    ೉͍͠

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  108. ྆ऀͷྑ͍όϥϯεΛ
    ୳ΔϑϩϯτΤϯυ

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  109. 5IBOLT
    IUUQBIPNV
    !BIPNV
    HJUIVCDPNBIPNV
    !

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  110. 1IPUPTCZʜ
    ΫϨϤϯIUUQXXXGMJDLSDPNQIPUPTMBGGZL
    *OUSPEVDUJPOIUUQXXXGMJDLSDPNQIPUPTKJOUFSXBT
    /FUXPSLJOHIUUQXXXGMJDLSDPNQIPUPTLFXM
    3FOEFSJOHIUUQXXXGMJDLSDPNQIPUPTKEIBODPDL
    4DSJQUJOHIUUQXXXGMJDLSDPNQIPUPTOZVIVIVV
    *OUBSBDUJPOIUUQXXXGMJDLSDPNQIPUPTTUPLFENFEJBQIPUPHSBQIZ
    $PODMVTJPOIUUQXXXGMJDLSDPNQIPUPTTBBE

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