knockout.jsの紹介（第六回 okayama-js 勉強会）

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knockout.js ୈ࿡ճ okayama-js ษڧձ 2016/11/19 ҳݟ ੣(@mako_wis)

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ࣗݾ঺հ w ҳݟ੣ ΁ΜΈ·͜ͱ w 5XJUUFS!NBLP@XJT w גࣜձࣾΫϨΦϑʔΨ w ϑϩϯταʔόʔαΠυΤϯδχ ΞɾจষνΣοΫ܎

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࠷ۙ࢖ͬͯΔJSपΓͷٕज़ • TypeScript • ੩తܕ෇͖ݴޠͬΆ͔͚͘Δ • knockout.js • ࠓ೔ͷ࿩

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JavaScriptͰ ໘౗͍͘͞ͳͱࢥ͏͜ͱ

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ೖྗ஋ʹԠͯ͡දࣔΛม͑Δ

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ͦͷଞ͕͋ΔϑΥʔϜ

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࡞Δͷ໘౗͍͘͞Ͱ͢ΑͶʁ

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knockout.jsͩͱ

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ͦͷଞϑΥʔϜ ɹ function viewModel() { var self = this; self.radioSelectedValue = ko.observable("okayama"); self.selectedOther= ko.computed(function() { return self.radioSelectedValue() == "other"; }); }; ko.applyBindings(new viewModel()); KBWB4DSJQU IUNM

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knockout.js ڵຯ෸͍͖ͯ·ͨ͠ΑͶʁ

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knockout.jsͱ͸

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ओͳಛ௃ ˞೔ຊޠυΩϡϝϯτ͔ΒҾ༻ w ΤϨΨϯτͳґଘτϥοΩϯά w σʔλϞσϧ͕มߋ͞ΕΔ౓ʹɺ6*ͷؔ࿈෇͚ΒΕͨ෦෼Λߋ৽͠·͢ɻ w એݴܕόΠϯσΟϯά w σʔλϞσϧͱ6*Λؔ࿈෇͚ΔɺγϯϓϧͰ໌֬ͳํ๏Ͱ͢ɻෳࡶͳಈత 6*΋ɺόΠϯσΟϯάɾίϯςΩετΛ֊૚Խͤ͞Δ͜ͱͰ؆୯ʹ࡞੒Ͱ ͖·͢ɻ w ֦ு͕༰қ w ৽ͨͳόΠϯσΟϯάͷ࢓૊ΈΛ࣮૷͢Δ͜ͱ΋ɺ࠷খݶͷίʔυྔͰ ࣮ݱͰ͖·͢ɻ

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ͦͷଞͷϝϦοτ ˞೔ຊޠυΩϡϝϯτ͔ΒҾ༻ w ७ਮͳ+BWB4DSJQUϥΠϒϥϦͰ͋Δ w αʔόαΠυ ɹΫϥΠΞϯταΠυͷٕज़Λબͼ·ͤ Μɻ w طଘͷ8FCΞϓϦέʔγϣϯʹ΋౤ೖͰ͖Δ w ΞʔΩςΫνϟʹେ͖ͳมߋΛඞཁͱ͠·ͤΜɻ w ϝΠϯετϦʔϜͷϒϥ΢βΛαϙʔτ w *&Ҏ߱ 'JSFGPYҎ߱ $ISPNF 4BGBSJ౳

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࢖͏ͱָͰ͖Δॴ

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ೖྗ஋Λಉظ͍ͨ͠

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ೖྗ஋Λಉظ͢Δ function TestappViewModel() { var self = this;   self.message = ko.observable("Hello World!!”); }; ko.applyBindings(new TestappViewModel()); KBWB4DSJQU IUNM

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σϞ https://makowis.github.io/okayamajs2016/

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ΫϦοΫʹରͯ͠Կ͔͍ͨ͠

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ΫϦοΫͰΧ΢ϯτΞοϓ   ΫϦοΫ͍ͯͩ͘͠͞ function TestappViewModel() { var self = this; self.numberOfClicks = ko.observable(0); self.incrementClickCounter = function() {  var previousCount = self.numberOfClicks();  self.numberOfClicks(previousCount + 1); }; };   ko.applyBindings(new TestappViewModel()); KBWB4DSJQU IUNM

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σϞ https://makowis.github.io/okayamajs2016/

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഑ྻʹೖͬͯΔσʔλΛදࣔ

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഑ྻͷσʔλΛग़ྗ

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σϞ https://makowis.github.io/okayamajs2016/

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ৄ͍͠৘ใ͸ ೔ຊޠυΩϡϝϯτͰ http://kojs.sukobuto.com/

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࣮ࡍ࢖ͬͯΈͯͲ͏ͳͷʁ

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ݸਓతʹ͍͍ͳͱࢥͬͯΔॴ w ը໘पΓͷ੍ޚʹಛԽͯ͠Δ w $44ͷ෇͚ସ͑ɺදࣔ੾Γସָ͕͑ w +BWBTDSJQU༻ͷΫϥεΛ෇͚ͳ͍͍ͯ͘ w 8FCϑϨʔϜϫʔΫͷྖҬͱ݌՞͠ͳ͍

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