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ここ1~2年くらいで 使えるようになった(主要ブラウザーの最新版 がすべて対応した ) ウェブの新機能について ランダムに喋る!
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tebasaki
March 15, 2024
Programming
9
6.8k
ここ1~2年くらいで 使えるようになった(主要ブラウザーの最新版 がすべて対応した ) ウェブの新機能について ランダムに喋る!
2024.03.15 福岡フロントエンド勉強会 #1
tebasaki
March 15, 2024
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Transcript
͜͜1ʙ2͘Β͍Ͱ ͑ΔΑ͏ʹͳͬͨ Σϒͷ৽ػೳʹ͍ͭͯ ϥϯμϜʹΔ! 2024.03.15 ԬϑϩϯτΤϯυษڧձ #1 ओཁϒϥβʔͷ࠷৽൛ ͕ͯ͢ରԠͨ͠ (
)
ͳʹͳ͍ϖʔδ
CSS͕ωετʹରԠ CSS
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_nesting/Using_CSS_nesting 10લʹཉ͔ͬͨ͠ɻ
Ϗϡʔϙʔτͷछྨ͕૿͑ͨ CSS lvh / svh / dvh [new]
lvh ද͕ࣔಈతʹมԽ͢ΔϒϥβʔͷUIʢΞυϨεόʔɺπʔϧόʔʣͷྖ ҬΛؚΉϏϡʔϙʔτߴ͞
svh ද͕ࣔಈతʹมԽ͢ΔϒϥβʔͷUIʢΞυϨεόʔɺπʔϧόʔʣͷྖ ҬΛؚ·ͳ͍Ϗϡʔϙʔτߴ͞
dvh πʔϧόʔͷදࣔঢ়ଶʹ͋ΘͤͯಈతʹมԽ͢ΔϏϡʔϙʔτߴ͞
lvh ද͕ࣔಈతʹมԽ͢ΔϒϥβʔͷUIʢΞυϨεόʔɺπʔϧόʔʣͷྖ ҬΛؚΉϏϡʔϙʔτߴ͞ svh ද͕ࣔಈతʹมԽ͢ΔϒϥβʔͷUIʢΞυϨεόʔɺπʔϧόʔʣͷྖ ҬΛؚ·ͳ͍Ϗϡʔϙʔτߴ͞ dvh πʔϧόʔͷදࣔঢ়ଶʹ͋ΘͤͯಈతʹมԽ͢ΔϏϡʔϙʔτߴ͞ ※ ैདྷͷvhϒϥβʔͷʮσϑΥϧτͷߴ͞ʯͱͳΓɺϒϥβʔͷ࣮ґଘʢ͓ͦΒ͘lvhͱಉ͡ʹͳΔʣɻ
※ ͪΖΜlvw, svw, dvw͋Δͷ͕ͩɺ্هͷʮද͕ࣔಈతʹมԽ͢ΔϒϥβʔͷUIʯʹεΫϩʔϧόʔͷྖҬ ؚ·Εͳ͍ͷͰɺ͋·Γ࣮༻্ͷҙຯͳ͍Α͏ʹࢥ͏ ·ͱΊ
svmin / svmax / lvmin / lvmax / dvmin /
dvmax / vmin / vmax [new] Ϗϡʔϙʔτͷॎԣͷ͏ͪେ͖͍ or খ͍͞ΛऔΕΔ
transformػೳଟ͗͢ˠׂ CSS scale, rotate, translate͕ͦΕͧΕಠཱͨ͠ϓϩύςΟʹͳͬͨɻ ʢskewͳ͔ͥͳ͍ʣ ΞχϝʔγϣϯͰ͏ͱ͖ʹศརɻ
top, right, bottom, left ·ͱΊͯࢦఆͰ͖ΔΑ͏ʹͳͬͨ CSS →
accent-colorϓϩύςΟͰ ϥδΦϘλϯɾνΣοΫϘο Ϋεͷ৭͕؆୯ʹมߋՄೳʹ CSS CSS Render
range syntax CSS → ैདྷͷه๏ͩͱʮmax-widthͱҰக͢Δ߹Ͳ͚ͬͪͩͬʁʯͱͳΓ͕ͪͩͬͨͷͰɺͦ ͏͍͏؍ͰΘ͔Γ͘͢ͳͬͨɻ
container queries CSS ΟϯυαΠζͰͳ͘ҙͷཁૉͷαΠζʹجͮ͘CSSΓସ͕࣮͑ݱՄೳʹɻ https://developer.mozilla.org/en-US/docs/Web/CSS/container-type
ʢࢲݟʣ ίϯϙʔωϯτ͕ࣗͷදࣔྖҬʹԠͯ͡ܝग़߲ͷαΠζײΛௐ͢Δͱ͍࣮ͬͨ ͕JavaScriptͳ͠Ͱൺֱత؆୯ʹ࣮Ͱ͖ΔΑ͏ʹͳͬͨɻ ͨͩίϯςφʔίϯϙʔωϯτͷϧʔτཁૉʹݶఆ͢ΔͳͲԿΒ͔ͷنଇੑΛ࣋ͨͤ ͳ͍ͱϋΠίϯςΩετ͗͢Δ࣮ʹͳͬͯ͠·͏͔͠Εͳ͍ɻ
:has selector CSS ಛఆͷཁૉΛؚΜͰ͍Δ͜ͱΛ݅ʹελΠϧద༻͕Մೳʹ ※্هઆ໌ҰྫͰ͋Γɺ:hasηϨΫλʔͷػೳΛཏతʹઆ໌͍ͯ͠ͳ͍ https://developer.mozilla.org/en-US/docs/Web/CSS/:has imgΛแ͢Δh2ཁૉʹελΠϧΛద༻
ʢࢲݟʣ ෳࡶͳCSSηϨΫλʔͷ༻ՄಡੑΛԼͤ͞Δɻ :hasͷ༻͕ఆ͞ΕΔଟ͘ͷέʔεʹ͓͍ͯɺ۪ʹΫϥε͚͢Δ͔ɺReactίϯ ϙʔωϯτͰJavaScriptʹΑΔग़͚͠Λ͓͜ͳͬͨ΄͏͕Մಡੑͷ؍Ͱྑ͍ͱࢥ ͏ɻ
ྻͷඇഁյૢ࡞ Array.prototype.toSorted(); Array.prototype.toReverted(); Array.prototype.toSpliced(); Array.prototype.with(); ES
None
Promise.withResolvers ES ֎෦͔Β resolve / reject ͘͢͠ͳͬͨɻ
Object.groupBy() Map.groupBy() ES https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/groupBy
None
PopoverAPI HTML HTML͚ͩͰϙοϓΦʔόʔද͕࣮ࣔͰ͖Δ More examples: https://mdn.github.io/dom-examples/popover-api/ • popovertargetactionଐੑͰด͡ΔϘλϯ࡞ΕΔ • .togglePopover()
ͰJavaScript͔Βͷද੍ࣔޚՄೳ • ::backdropٙࣅཁૉͰഎܠΛ҉͘͢Δ͜ͱՄೳ
<dialog>ཁૉͱPopover APIͷҧ͍ʢ͋Δ͍ซ༻ʣʹ͍ͭͯѲ͓ͯ͘͜͠ͱΛਪ https://developer.mozilla.org/en-US/docs/Web/API/Popover_API#concepts_and_usage
ͳʹͳ͍ϖʔδ