読んだ内容まとめてLT会「インクルーシブHTML+CSS&JavaScript」
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K.Akoarum
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ΠϯΫϧʔγϒ)5.-$44+BWB4DSJQU 5)6ಡΜͩ༰·ͱΊͯ-5ձEFNP
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גࣜձࣾαʔΩϡϨʔγϣϯΤϯδχΞ ଜԬɹ݈ਓʢ͚Μͯ͌ʣ 7VFKTɺ3FBDU3FEVYɺΞΫηγϏϦςΟɺ σβΠϯɺϒϩοΫνΣʔϯɺϥϯχϯά !"LPBSVN@, IUUQTXXXBLPBSVNOFU
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ΞΫηγϏϦςΟ͚ͩͰͳ͘ɺ શͯͷϢʔβʔΛࢹʹೖΕͨྑॻ 8FCΔਓΈΜͳʹಡΜͰ΄͍͠ɻ ΞΫηγϏϦςΟք۾ࡾେॻ੶ͷ
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ΠϯΫϧʔγϒͱ w แׅతͳɺแؚతͳ w ։์తͳ w ഉଞతʢFYDMVTJWFʣͷରٛޠ ͜͜ͰɺಛఆͷਓΛআ֎͠ͳ͍ͷҙຯɻ ˠશͯͷϢʔβʔΛड͚ೖΕΔ͜ͱΛΠϯΫϧʔγϒͰ͋Δͱ͢Δɻ
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ΠϯΫϧʔγϒΛֶͿʹຊʹྑॻ w ϑΟϧλʔΟδΣοτͳͲ۩ମతͳ6*ͷ࣮ྫΛհ w ༁ิͳͲ๛Ͱͱͯਂ͘ཧղͰ͖Δ
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WJTVBMMZIJEEFO
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Α͘ݟ͔͚ΔɺΑ͘Δ)5.-ϚʔΫΞοϓ Α͘ͳ͍ϚʔΫΞοϓ
ݟग़͠λΠτϧ
αϒηΫγϣϯ
ݟग़͠λΠτϧ ʙαϒηΫγϣϯʙ Α͘ΔϚʔΫΞοϓ
ݟग़͠λΠτϧ
αϒηΫγϣϯ
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WJTVBMMZIJEEFOͷ༻ͯ͠ΑΓ໌֬ʹ͢Δ
ݟग़͠λΠτϧ
αϒλΠτϧɿ
αϒηΫγϣϯ
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); } )5.- $44 ݟग़͠λΠτϧ ʙαϒηΫγϣϯʙ
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ແݶεΫϩʔϧͷՄ൱
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ແݶεΫϩʔϧઈର/( ͳͥʁ w εΫϩʔϧόʔͷϋϯυϧ͕Ҡಈͯ͠ɺͱͯෆշͳಈ͖Λ͢Δ w ແݶεΫϩʔϧͷԼʹ͋ΔίϯςϯπʹΞΫηεͰ͖ͳ͍ w ಛʹ5BCΩʔͰϝΠϯίϯςϯπΛൈ͚ΒΕͳ͘ͳͬͯඇৗʹෆշ ସҊ w ʮͬͱಡΈࠐΉʯϘλϯʹஔ͖͑Δ w ࣗಈಡΈࠐΈΛΦϯʹ͢Δ͔ΛϓϩϯϓτͰਘͶΔ
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ϑΥʔϜͷ࣮
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ϥϕϧ͚
ύεϫʔυ
ˣ
ύεϫʔυ
MBCFMཁૉΛͬͯϥϕϧͱϑΟʔϧυΛඥ͚ͮΔɻ ͨΓલͷ͜ͱ͚ͩͲɺͰ͖ͯͳ͍αΠτΛΑ͘ݟΔؾ͕͢Δʜ
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QMBDFIPMEFSଐੑ σϑΥϧτͩͱάϨʔͰίϯτϥετൺʹΛىͨ͜͢Ίɺ $44Λௐ͢Δɻ ʢݪஶͰΠλϦοΫʹ͢Δͱ͋Δ͕ɺຊޠͰಡΈʹ͍ͨ͘Ίɺ ผͷํ๏Λݕ౼͖͢ʣ ::-webkit-input-placeholder, ::-moz-placeholder, ::placeholder { color: #000; }
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ඞਢϑΟʔϧυ ඞਢΛද͢ʮʯʮ˞ʯBSJBIJEEFOʹ͢Δ ໊લ
※
ಡΈ্͛ͯ͠·͏͜ͱͰޡղΛ༩͔͑Ͷͳ͍ͨΊɺ ಡΈ্͛ͤ͞ͳ͍Α͏ʹ͢Δɻ BSJBSFRVJSFEଐੑΛ͏ ݪஶͰSFRVJSFEଐੑͷରԠ͕ෆेͳͨΊɺ BSJBSFRVJSFEଐੑΛ͏͜ͱΛਪ͍ͯͨ͠Α͏Ͱ͢ɻ
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ύεϫʔυදࣔͰ͖ΔΑ͏ʹ͢Δ දࣔΛͰ͖ΔΑ͏ʹ্ͨ͠Ͱɺύεϫʔυͷ֬ೝ༻ʹ͏Ұ ೖྗͤ͞ΔΠϯλʔϑΣΠεΛΊͤ͞Δɺͱ͍͏͜ͱɻ +BWB4DSJQUͰUZQFଐੑΛॻ͖͑Δ͜ͱͰදࣔͤ͞Δ͜ͱ͕ Ͱ͖ΔͨΊɺ͜ΕΛ࣮͢Δɻ ͳ͓ɺ*OUFSOFU&YQMPSFSͱ.JDSPTPGU&EHFʹ ඪ४ػೳͱ࣮ͯ͠͞Ε͍ͯΔͨΊɺ੍͓ͯ͘͠ඞཁ͕͋Δɻ
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ύϑΥʔϚϯεΛҡ࣋͢Δ
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ίϯςϯπΛૣ͘දࣔ͢Δ͜ͱΠϯΫϧʔγϒ w ը૾ͷ࠷దԽ w $44ɺ+BWB4DSJQUͷ࠷దԽɾϛχϑΝΠԽ w ϑΥϯτͷαϒηοτԽ (PPHMF'POUTͷαϒηοτ UFYUύϥϝʔλΛ༩͢Δ͜ͱͰඞཁͳจࣈͷϦετΛઃఆͰ͖Δ
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͜ͷຊΛಡΜͰࢥͬͨ͜ͱ
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w )5.-ηϚϯςΟοΫ͕ॏཁʂʂ w $44ʢσβΠϯʣσβΠϯੑ͚ͩͰݟͣɺՄಡੑͳͲҙ ࣝ͢Δ͜ͱ͕େࣄ w ͱʹ͔͋͘ΒΏΔϢʔβʔΛड͚ೖΕΒΕΔίʔσΟϯάΛ ҙࣝ͢Δʂ w ϑϩϯτΤϯυΔͳΒͬͺΓΠϯΫϧʔγϒ ΞΫηγϏϦςΟͳͲΛҙ͍͖͍ࣝͯͨ͠ʜʂ
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͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠