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マークアップの最適解を見つけ出す方法 in Frontrend Vol.9
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Kasumi Morita
April 28, 2017
Programming
10
9.5k
マークアップの最適解を見つけ出す方法 in Frontrend Vol.9
Frontrend Vol.9 でお話しした内容です。
動画配信もされています →
https://freshlive.tv/tech-conference/109133
Kasumi Morita
April 28, 2017
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Transcript
ϚʔΫΞοϓͷ࠷దղΛݟ͚ͭग़͢ํ๏ ༗ݶձࣾΞοϓϧοϓϧɹా͔͢Έ 'SPOUSFOE7PM - How to Find Best Practice of
Markup -
Question ͳΜͷͨΊʹϚʔΫΞοϓ͢Δͷ͔ ͝ଘͰ͔͢ʁ
“ ͜͜MJཁૉͰϚʔΫΞοϓ͠·͢ ͱ͋Δॳ৺ऀ͚ॻ੶ʹͯ
“ ͜͜MJཁૉͰϚʔΫΞοϓ͠·͢ ͱ͋Δॳ৺ऀ͚ॻ੶ʹͯ זד
Ͳ͏ͬͯϚʔΫΞοϓ͍ͯ͠·͔͢ʁ ͓Βͤ ͓Βͤ Q Q EJW EJW
͓Βͤ BSUJDMF BSUJDMF I I MJ MJ Q Q
༗ݶձࣾΞοϓϧοϓϧ ϚʔΫΞοϓΤϯδχΞ ా͔͢Έ !,BTVNJ.PSJUB ! ❖ डୗҊ݅ ❖ $.4ͷ։ൃ
‣ 8FC੍࡞ऀ͕)5.-ཁૉΛબఆ͢Δཧ༝ ‣ ࠷దղΛݟ͚ͭग़͢ํ๏ ‣ ͳͥMJཁૉͰϚʔΫΞοϓ͢Δͷ͔ʁ ‣ ·ͱΊ Agenda
8FCⵖ⡲罏ָ )5.-銲稆鼅㹀ׅ椚歋
EJWهࣄͷλΠτϧEJW EJWࠓ໊ݹ͔Β͖ͬͯ·ͨ͠ɻ໊ݹ#ڃ άϧϝ͕͍ͬͺ͍Ͱ৭͍͠ΐͬͺ͍৯Ͱ͍ͬͺ͍ Ͱ͕͢ɺͱͯॅΈ͍֗͢Ͱ͢ʂCSCSCS ؍ޫ໊ݹɺݘࢁɺৗ͞ΜΆಓ͕͓͢͢Ί Ͱ͢ɻCSBCMPHDNT5SBJOJOH$BNQ4QSJOHͰ ໊ݹͷதͰษڧձΛ։࠵͠·͢կؾʹͳͬͨํ ݄ɺ໊ݹʂʂEJW EJWͬͱΈΔEJW
EJWهࣄͷλΠτϧEJW EJWࠓ໊ݹ͔Β͖ͬͯ·ͨ͠ɻ໊ݹ#ڃ άϧϝ͕͍ͬͺ͍Ͱ৭͍͠ΐͬͺ͍৯Ͱ͍ͬͺ͍ Ͱ͕͢ɺͱͯॅΈ͍֗͢Ͱ͢ʂCSCSCS ؍ޫ໊ݹɺݘࢁɺৗ͞ΜΆಓ͕͓͢͢Ί Ͱ͢ɻCSBCMPHDNT5SBJOJOH$BNQ4QSJOHͰ ໊ݹͷதͰษڧձΛ։࠵͠·͢կؾʹͳͬͨํ ݄ɺ໊ݹʂʂEJW EJWͬͱΈΔEJW עׯֽֿה鎉ֲה
8FCⵖ⡲罏ׄׯזֻגֿךְֻ剅ֽ
Question ͳΜͰ)5.-ཁૉΛબఆ͢Δͷ͔ʁ MJ TQBO Q EJW TFDUJPO BSUJDMF ˘FUD
8FCαΠτ͕࣋ͭػೳΛ࠷େݶʹ׆͔ͨ͢Ί Answer
ཁૉΛબఆ͢Δͱ͖ʹؾΛ͚ͭΔ͜ͱ ‣ %0.ߏਖ਼͘͠ ‣ )5.-୯ಠදࣔ͢Δ߹ͳ͍Α͏ʹ ‣ εΫϦʔϯϦʔμʔͰཧղ͍͢͠Α͏ʹ ‣ ΩʔϘʔυૢ࡞Ͱ͖ΔΑ͏ʹ ‣
ϢʔβϏϦςΟʢૢ࡞ੑʣ
‣ %0.ߏਖ਼͘͠ ‣ )5.-୯ಠදࣔ͢Δ߹ͳ͍Α͏ʹ ‣ εΫϦʔϯϦʔμʔͰཧղ͍͢͠Α͏ʹ ‣ ΩʔϘʔυૢ࡞Ͱ͖ΔΑ͏ʹ ‣ ϢʔβϏϦςΟʢૢ࡞ੑʣ
ཁૉΛબఆ͢Δͱ͖ʹؾΛ͚ͭΔ͜ͱ
લʹߦ࣮ͬͨݧ
Question ҧ͏αʔϏεͳͷʹ͋Δఔಉ͡֎ݟɻ ͳΜͰʁ
ҧ͏αʔϏεͰ͍ͬͯΔϚʔΫΞοϓ͍ͬ͠ΐ͔ͩΒɻ Answer TUSPOHॏཁ TUSPOHॏཁ TUSPOHॏཁ TUSPOHॏཁ
)5.-ͷΈͰใ͕݁Ͱ͖Εʜ ‣ Ҿ༻͢Δ͜ͱ͕Ͱ͖Δ ‣ ίϐϖ͕Ͱ͖Δ ‣ ϖʔδݕࡧ͕Ͱ͖Δ ͋Εʁͱͬͯී௨ͷػೳ͡Όͳ͍ʁ
OFYU\ DPOUFOUˑ࣍˒ ^ $44 TQBOBSJBMBCFMˑ࣍˒TQBO )5.-
OFYU\ DPOUFOUˑ࣍˒ ^ $44 TQBOBSJBMBCFMˑ࣍˒TQBO )5.- 걾ֺׅךծتً ͘͘͝͝ී௨ͩͱࢥ͍ͬͯΔػೳ ͪΌΜͱ)5.-Ͱॻ͔Ε͍ͯΔ͔Βػೳ͍ͯ͠Δ
ϚʔΫΞοϓݴޠ͍ͬͯ͏ͷਓͱػցͷڞ௨ݴޠͷ͜ͱ ͭ·ΓϚʔΫΞοϓ͢ΔࢲͨͪਓͱػցΛͭͳ͙༁ऀͷׂΛ͍ͯ͠Δ ϚγϯϦʔμϒϧ ώϡʔϚϯϦʔμϒϧ ϚʔΫΞοϓԿΛఏڙͰ͖Δͷ͔ʁ
剑黝鍑鋅אֽ⳿ׅ倯岀
ϚʔΫΞοϓͷͩ͜ΘΓ͕ग़ͯ͘Δͱ ൈ͚ग़ͤͳ͍পʜ
“ ϚʔΫΞοϓʹਖ਼ղͳ͍ ۀքͷ͑Β͍ਓͨͪ
͕͑ͨ͘͞Μ͋Δ͚ͩ ҆৺͍ͯͩ͘͠͞ʂ
<ul> <li><a href="#">Home</a></li> <li><a href="/blog/">ϒϩά</a></li> <li><a href=“/blog/xxx.html">ϒϩάهࣄ</a></li> </ul> <nav> <ol>
<li><a href="#">Home</a></li> <li><a href="/blog/">ϒϩά</a></li> <li><a href="/blog/xxx.html">ϒϩάهࣄ</a></li> </ol> </nav>
<ul> <li><a href="#">Home</a></li> <li><a href="/blog/">ϒϩά</a></li> <li><a href=“/blog/xxx.html">ϒϩάهࣄ</a></li> </ul> <nav> <ol>
<li><a href="#">Home</a></li> <li><a href="/blog/">ϒϩά</a></li> <li><a href="/blog/xxx.html">ϒϩάهࣄ</a></li> </ol> </nav> ו麩גכְזְ
ͷσόΠεͷදࣔʹ ৼΓճ͞Εͳ͍Α͏ʹج४͕ཉ͍͠ ϚʔΫΞοϓͷج४ͬͯͳΜͩΖ͏ʁ Ұൠతͳج४Λ୳͢ ࠷దղΛݟ͚ͭΔͨΊʹߦͬͨ͜ͱ
ج४Λ୳͢ ͨͱ͑ϒϥβ༷Λͱʹ࡞ΒΕ͍ͯΔ
ϚʔΫΞοϓ͢Δ্Ͱඞཁͳࣝ ➬圫 8FC،ؙإءؽٔذ؍ 4&0 刿倜׃װְׅ $.4鏣鎘 &'0 ًٝذشٝأ䚍 ͔ͨ͠͠ΒਓʹΑͬͯͬͱ͍ͬͺ͍͋Δ͔͠Ε·ͤΜ
ϚʔΫΞοϓ͢Δ্Ͱج४ʹ͢Δͷͨͪ ϧʔϧܥ πʔϧܥ
ϚʔΫΞοϓ͢Δ্Ͱج४ʹ͢Δͷͨͪ ϧʔϧܥ ‣ 8$-4ͳͲͷ༷ ‣ +*4ن֨ ‣ ݕࡧΤϯδϯͷΞϧΰϦζϜ ‣ $.4ͷ༷
ϧʔϧܥҰܾ·ͬͨͷͳ͔ͳ͔มΘΒͳ͍ɻ কདྷͷ͜ͱߟ͑ͯେମϧʔϧܥΛج४ɻ
ϚʔΫΞοϓ͢Δ্Ͱج४ʹ͢Δͷͨͪ πʔϧܥ ‣ εΫϦʔϯϦʔμʔ ‣ ΩʔϘʔυૢ࡞ ‣ 344Ϧʔμʔ πʔϧܥϢʔβϏϦςΟΛݕূ͢ΔͨΊʹ͏ɻ ϧʔϧܥͰ0,ͰϢʔβϏϦςΟΛଛͳ͏ͳΒߟ͑
͢ඞཁग़ͯ͘Δɻ
ੈͷதͷ༷ͷҙ ҙɿ༷ਓ͕ؒ࡞ΔͷͰมΘΔ ‣ ༷มߋʹౖΒͳ͍ίπ ༷ੜ͖ͯΔͬͯࢥ͓ͬͯ͘ ৗʹվળ͠Α͏ͱಈ͍͍ͯΔ͜ͱ͍͍͜ͱ
ϚʔΫΞοϓͨ݁͠Ռ͕Ͳ͏ͳΔ͔Λ͓ͬͯ͘ Ͳ͏ͬͨΒମݧͰ͖ΔͩΖ͏ʁ ࣮ࡍʹମݧͯࣝ͠Λ͚ͭΔ ࠷దղΛݟ͚ͭΔͨΊʹߦͬͨ͜ͱ
࣮ࡍʹମݧ͢Δํ๏ ‣ εΫϦʔϯϦʔμʔ ‣ 344ϦʔμʔͳͲͷϦʔμʔදࣔ ‣ ΩʔϘʔυૢ࡞ ‣ ݕࡧΤϯδϯ ‣
ʜFUD
࣮ࡍʹମݧͯ͠Έͯमਖ਼ͨ͠ϚʔΫΞοϓྫ ‣ ͳʹ͔Λด͡ΔϘλϯ ‣ ಠࣗσβΠϯͷνΣοΫϘοΫε ‣ ҙຯΛ࣋ͭγϯϘϧϑΥϯτ ‣ σβΠϯʹҾ͖ͣΒΕͳ͍ %0.ߏΛอͭ
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ̍ TQBODMBTTˑKTDMPTF˒ด͡ΔTQBO ͳʹ͔Λด͡ΔϘλϯ CVUUPOUZQFˑCVUUPO˒DMBTTˑKTDMPTF˒ด͡ΔCVUUPO ꟗׄ
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ MBCFM JOQVUUZQFˑDIFDLCPY˒WBMVFˑBQQMF˒ΓΜ͝ MBCFM ಠࣗσβΠϯͷνΣοΫϘοΫε EJW JOQVUUZQFˑDIFDLCPY˒WBMVFˑBQQMF˒JEˑBQQMF˒ MBCFMGPSˑBQQMF˒ΓΜ͝MBCFM EJW ΓΜ͝
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ TQBODMBTTˑJDPOCFHJOOFS˒BSJBMBCFMˑॳ৺ऀՄೳ˒TQBO ҙຯΛ࣋ͭγϯϘϧϑΥϯτ TQBODMBTTˑJDPOCFHJOOFS˒BSJBIJEEFOˑUSVF˒TQBO TQBODMBTTˑTSPOMZ˒ʢॳ৺ऀՄೳʣTQBO 1. ਖ਼ࣾһ(த్) 2. ਖ਼ࣾһ(৽ଔ)
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ σβΠϯʹҾ͖ͣΒΕͣʹ%0.ߏΛอͭʢ)5.-ʣ MJDMBTTˑJUFN˒ EJWDMBTTˑJUFNGPPUFS˒ QهࣄͷλΠτϧ͕ೖΓ·͢Q EJW EJWDMBTTˑJUFNIFBEFS˒ VM MJϥϕϧ"MJ MJϥϕϧ#MJ
VM EJW MJ هࣄͷλΠτϧ͕ೖΓ·͢ ϥϕϧ" ϥϕϧ#
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ JUFN\ EJTQMBZUBCMF ^ JUFNIFBEFS\ EJTQMBZUBCMFIFBEFSHSPVQ ^ JUFNGPPUFS\ EJTQMBZUBCMFGPPUFSHSPVQ ^
σβΠϯʹҾ͖ͣΒΕͣʹ%0.ߏΛอͭ $44ͦͷ هࣄͷλΠτϧ͕ೖΓ·͢ ϥϕϧ" ϥϕϧ#
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ JUFN\ EJTQMBZGMFY GMFYEJSFDUJPODPMVNO ^ JUFNIFBEFS\ PSEFS ^ JUFNGPPUFS\ PSEFS
^ σβΠϯʹҾ͖ͣΒΕͣʹ%0.ߏΛอͭʢ$44ͦͷʣ هࣄͷλΠτϧ͕ೖΓ·͢ ϥϕϧ" ϥϕϧ#
ڍಈΛ͔ͬͯΒमਖ਼ͨ͠ϚʔΫΞοϓͦͷ JUFN\ EJTQMBZNTHSJE EJTQMBZHSJE ^ JUFNIFBEFS\ NTHSJESPX HSJESPX ^ JUFNGPPUFS\
NTHSJESPX HSJESPX ^ σβΠϯʹҾ͖ͣΒΕͣʹ%0.ߏΛอͭʢ$44ͦͷʣ هࣄͷλΠτϧ͕ೖΓ·͢ ϥϕϧ" ϥϕϧ#
ϚʔΫΞοϓΛΓ͍ͨͳΒ ମݧΛͯ͠ڍಈΛѲ͠Α͏ )5.-ͷཁૉΛબఆ͢Δཧ༝8FC͕࣋ͭػೳΛ ࠷େݶʹ׆͔ͨ͢Ίɻ ͪΌΜͱग़ྗઌͷσόΠεͰࢥͬͨ݁Ռ͕ ಘΒΕ͍ͯΔ͔֬ೝ͠Α͏ɻ
ͨ·ʹυΩϡϝϯτͨͪ՞͢Δ ՞ͨ͠ͱ͖ΫϥΠΞϯτ͕ͲΜͳػೳΛ Ұ൪ٻΊ͍ͯΔ͔Ұߟ͑ͯΈΑ͏ ϓϩδΣΫτ͝ͱʹ༏ઌॱҐΛܾΊΔ ࠷దղΛݟ͚ͭΔͨΊʹߦͬͨ͜ͱ
ߟྀ͢Δ͖༷ͨͪ ➬圫 8FC،ؙإءؽٔذ؍ 4&0 刿倜׃װְׅ $.4鏣鎘 &'0 ًٝذشٝأ䚍
➬圫 8FC،ؙإءؽٔذ؍ 4&0 刿倜׃װְׅ $.4鏣鎘 &'0 ًٝذشٝأ䚍 תח鄃הָֹ֮ ߟྀ͢Δ͖༷ͨͪ 秛劍הְֲせך植㹋
༏ઌॱҐͷྫ $.4ઃܭ ༷ 4&0ରࡦ&'0ରࡦ 8FCΞΫηγϏϦςΟ 8FCΞΫηγϏϦςΟ
༷ $.4ઃܭ &'0ରࡦ4&0ରࡦ $.4ߋ৽ॏࢹͷҊ݅ 8FCΞΫηγϏςΟॏࢹͷҊ݅ ‣ ͪΖΜɺͲΕେࣄ ͦΕͰɺ·ͣཉுΒͣʹ࠷༏ઌࣄ߲Λ࣮֬ʹ͜ͳͦ͏
ϓϩδΣΫτͷ͚͕ͩ͑͋Δ ϓϩδΣΫτ͝ͱʹඪΛܾΊͯɺඪʹ͔ͬͯୡ͢Δ ͦΕ͕ɺϚʔΫΞοϓͷ࠷దղ
זMJ銲稆ד و٦ؙ،حفׅךַ
“ ͜͜MJཁૉͰϚʔΫΞοϓ͠·͢ ͱ͋Δॳ৺ऀ͚ॻ੶ʹͯ
Ͳ͏ͬͯϚʔΫΞοϓ͍ͯ͠·͔͢ʁ ͓Βͤ ͓Βͤ ͓Βͤ Q Q EJW
EJW BSUJDMF BSUJDMF I I MJ MJ Q Q
Α͘ΈΔϚʔΫΞοϓͦͷ ‣ BSUJDMFཁૉΛ͏ͱɺඞવతʹݟग़͕͠ ͨ͘͞Μʹͳͬͯ͠·͏ʜ ‣ ಠཱͯ͠ͳ͍ͷʹBSUJDMFཁૉʁ ͜Εࣗମهࣄ͡Όͳ͍ʜ ͓Βͤ BSUJDMF
BSUJDMF I I
Α͘ΈΔϚʔΫΞοϓͦͷ ‣ ͠ϦϯΫઌ͕هࣄ͔ͩΒͱ͍͏ͰBSUJDMFཁૉΛબΜͰ͍ͨΒʜ ͓Βͤͷهࣄ ͓Βͤͷهࣄ ͓Βͤͷهࣄ ͓Βͤͷهࣄ BSUJDMF BSUJDMF BSUJDMF
BSUJDMF ݄ ݄ ݄ ͓Βͤͷهࣄ ͓Βͤͷهࣄ ͓Βͤͷهࣄ Χ ς ΰ Ϧ ʔ Χ ς ΰ Ϧ ʔ Χ ς ΰ Ϧ ʔ BSUJDMF BSUJDMF BSUJDMF αΠτλΠτϧ φϏɹφϏɹφϏ̏φϏ "ͷৄࡉͪ͜Β ∠ ∠ BSUJDMF
Α͘ΈΔϚʔΫΞοϓͦͷ ‣ EJWཁૉؒҧͬͯͳ͍͚ͲɺͦΕͧΕͷ ͓Βͤهࣄ͕ͭͷάϧʔϓͩͱ͍͑ͨʜ ͓Βͤ EJW EJW Q Q
Α͘ΈΔϚʔΫΞοϓͦͷ ‣ MJཁૉͰϚʔΫΞοϓ͍ͯ͠Ε ࢧԉٕज़ʹΑΔ͚Ͳ ʮϦετ˓߲ʯͬͯ࢝·ΓΛڭ͑ͯ͘ΕΔ ‣ ͠)5.-͚ͩʹͳͬͯ ಄ʹʮɾʯ͕େମ͔ͭ͘Βࢹ֮తʹ ά ϧʔϓͩͬͯཧղͰ͖Δ
͓Βͤ MJ MJ Q Q
͔ͩΒMJཁૉͳΜͩʂ ‣ ༷ΛΔ͜ͱ ‣ ͍Ζ͍Ζͳπʔϧ͔ΒϚʔΫΞοϓΛମݧͯ͠ΈΔ͜ͱ
תה
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