MOPCON 2020 分享主題「打造資深實力 - 你該學好的 JavaScript」
ޒഒላӃ.01$0/ଧࢿਂመྗ你該學好的 JavaScriptҝ㟬ࣗݾላ
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a.k.a Eddie愛現! 喜歡冷門的玩具Ruby/Rails 開發者、講師Ruby 技術推廣、教育、諮詢台灣、日本等國內外 Ruby 技術研討會講者部落格:https://kaochenlong.com高見龍@eddiekao
ޒഒላӃ.01$0/第18刷 發售中 發售中發售中
ޒഒላӃ.01$0/Git小教室
ޒഒላӃ.01$0/已絕版
ޒഒላӃ.01$0/敬請期待
ޒഒላӃ.01$0/༗ᘋ㐸電子書
ޒഒላӃ.01$0/ʮላशෆधཁҝެ࢘ɺҝɼෆधཁҝผਓɼҝ你ࣗݾʯߴݟཾ
ޒഒላӃ.01$0/৬ೈᱪఔࢣʁ
ޒഒላӃ.01$0/ೖҎ্ɼதڃະᕝ
ޒഒላӃ.01$0/େߝ
ޒഒላӃ.01$0/େߝw+BWB4DSJQUతᢛෆwಹࠣ༗झత+BWB4DSJQUޠ๏എޙతނࣄw你ٕ֘ೳᴍᏐᴍࡏṜࠣํʂwኺ৽ख্࿏౸അ్ࣝ
ޒഒላӃ.01$0/DISCLAIMER本次分享內容可能隱含部份商業或課程置入訊息,請謹慎評估!
ޒഒላӃ.01$0/᪑ෆ
ޒഒላӃ.01$0/ʮՖऒᚙɼ+BWB4DSJQUಹॄኄᗞઃܭʂʯᢛෆ
ޒഒላӃ.01$0/ʮੈք্༗ၷछఔࣜޠݴɼҰछඃഃ౸ष಄ɼ另Ұछᔒਓ༻ʯ$೭#KBSOF4USPVTUSVQᢛෆ
ޒഒላӃ.01$0/+4-JOUᢛෆ
ޒഒላӃ.01$0/+4-JOUՄೳ။ᩋ你᧷ಘࣗݾෆ။ሜఔࣜʂᢛෆ
ޒഒላӃ.01$0/function hello() {return "world";}function hello(){return "world";}ᢛෆ
ޒഒላӃ.01$0/㑌छఔࣜޠݴ༗ᢛෆతҰ໘ᢛෆ
ޒഒላӃ.01$0/ෆཁੋ᪑ஶ鄉ຽҰىഃᢛෆ
ޒഒላӃ.01$0/༗झޠ๏എޙతނࣄ
ޒഒላӃ.01$0/你ಓએࠂੋዎኄҰճࣄ嗎ʁ༗झޠ๏
ޒഒላӃ.01$0/ᏓᏐએࠂ༗झޠ๏
ޒഒላӃ.01$0/var a = 1;console.log(a); // 會印出什什麼?༗झޠ๏1
ޒഒላӃ.01$0/console.log(a); // 會印出?var a = 1;༗झޠ๏undefined
ޒഒላӃ.01$0/ᏓᏐఏঢ7BSJBCMF)PJTUJOH༗झޠ๏
ޒഒላӃ.01$0/var a;console.log(a); // 所以印出 undefineda = 1;༗झޠ๏被拉到上面?
ޒഒላӃ.01$0/ฤᩄWTᩄ$PNQJMBUJPOWT*OUFSQSFUBUJPO༗झޠ๏
ޒഒላӃ.01$0/ݐཱظWTࣥߦظ$SFBUJPO1IBTFWT&YFDVUJPO1IBTF༗झޠ๏
ޒഒላӃ.01$0/ݐཱظḼ໊ʢ*EFOUJpFSʣਐߦॳ࢝Խ1A 1B༗झޠ๏
ޒഒላӃ.01$0/ࣥߦظࣥߦവᏐො值2༗झޠ๏
ޒഒላӃ.01$0/var a = 1;console.log(a);༗झޠ๏ݐཱظvar a;console.log(a);undefined1A1B
ޒഒላӃ.01$0/var a = 1;console.log(a);༗झޠ๏ࣥߦظa = 1;console.log(a);122
ޒഒላӃ.01$0/ၷ֊ஈ༗झޠ๏
ޒഒላӃ.01$0/console.log(a);var a = 1;༗झޠ๏ݐཱظconsole.log(a);var a; undefined1A1B
ޒഒላӃ.01$0/console.log(a);var a = 1;༗झޠ๏ࣥߦظconsole.log(a);a = 1;undefined122
ޒഒላӃ.01$0/খଌᱛ༗झޠ๏
ޒഒላӃ.01$0/var a = 1;var a;console.log(a); // 會印出什什麼?༗झޠ๏1
ޒഒላӃ.01$0/if (false) {var a = 1;}console.log(a); // 會印出什什麼?༗झޠ๏undefined
ޒഒላӃ.01$0/另ҰछᏓᏐએࠂ༗झޠ๏
ޒഒላӃ.01$0/console.log(a); // 會印出什什麼?let a = 1;༗झޠ๏ReferenceError
ޒഒላӃ.01$0/ҼҝMFUෆ။ᏓᏐఏঢʁ༗झޠ๏
ޒഒላӃ.01$0/console.log(a);let a = 1;༗झޠ๏ݐཱظconsole.log(a);let a;1ATDZ
ޒഒላӃ.01$0/console.log(a);let a = 1;༗झޠ๏ࣥߦظconsole.log(a);a = 1;ReferenceError2
ޒഒላӃ.01$0/࣌ࢮე5%;5FNQPSBM%FBE;POF༗झޠ๏
ޒഒላӃ.01$0/let a = 1;console.log(a); // 會印出什什麼?༗झޠ๏
ޒഒላӃ.01$0/let a = 1;console.log(a);༗झޠ๏ݐཱظlet a;console.log(a);1ATDZ
ޒഒላӃ.01$0/let a = 1;console.log(a);༗झޠ๏ࣥߦظa = 1;console.log(a);122
ޒഒላӃ.01$0/MFU৽൛తWBSҎޙ༻MFUबྃʁ༗झޠ๏
ޒഒላӃ.01$0/വᏐએࠂ༗झޠ๏
ޒഒላӃ.01$0/sayHello();function sayHello() {console.log('hello');}༗झޠ๏?
ޒഒላӃ.01$0/sayHello();function sayHello() {console.log('hello');}༗झޠ๏ݐཱظ1A 1BsayHello();function sayHello() {console.log('hello');}2
ޒഒላӃ.01$0/sayHello();function sayHello() {console.log('hello');}༗झޠ๏sayHello();function sayHello() {console.log('hello');}2ࣥߦظhello
ޒഒላӃ.01$0/{ }༗झޠ๏物件?Block?
ޒഒላӃ.01$0/{hello: '哈囉'}༗झޠ๏物件
ޒഒላӃ.01$0/{hello: for (var i = 0; i < 10; i++ ) {if (i % 2 === 0) {continue hello;}console.log(i);}}༗झޠ๏labellabelBlock
ޒഒላӃ.01$0/+ 加號?十字架?༗झޠ๏
ޒഒላӃ.01$0/DPFSDJPO<ˋkoʊˈɝː.ʃən>5IFVTFPGGPSDFUPQFSTVBEFTPNFPOFUPEPTPNFUIJOHUIBUUIFZBSFVOXJMMJOHUPEP༗झޠ๏
ޒഒላӃ.01$0/+'' // 0+[] // 0+{} // NaN+-1 // -1+true // 1+false // 0+undefined // NaN+null // 0༗झޠ๏
ޒഒላӃ.01$0/[] + [] // ?[] + {} // ?{} + [] // ?༗झޠ๏
ޒഒላӃ.01$0/[] + []༗झޠ๏
ޒഒላӃ.01$0/༗झޠ๏
ޒഒላӃ.01$0/[] + [][].toString() + [].toString()༗झޠ๏空字串空字串
ޒഒላӃ.01$0/[] + {}༗झޠ๏
ޒഒላӃ.01$0/[] + {}[].toString() + {}.toString()༗झޠ๏'[object Object]'字串串空字串
ޒഒላӃ.01$0/{} + []༗झޠ๏Block
ޒഒላӃ.01$0/[] + {}Block 後⾯面跟了了 +[]༗झޠ๏0
ޒഒላӃ.01$0/[] + [] // ''[] + {} // '[object Object]'{} + [] // 0༗झޠ๏
ޒഒላӃ.01$0//B//PU"/VNCFS༗झޠ๏
ޒഒላӃ.01$0/console.log(typeof NaN); // 會印出什什麼?number༗झޠ๏
ޒഒላӃ.01$0//B/ੋҰछᏐࣈୠሏ༻ိදࣔʮෆੋᏐࣈʯ༗झޠ๏
ޒഒላӃ.01$0/ʮݸᥒʯ᪑ʮݸᥒʯతࠩผʁ༗झޠ๏
ޒഒላӃ.01$0/ʮݸᥒෆ။ൺֱܕผʁʯ༗झޠ๏
ޒഒላӃ.01$0/ݸᥒ᪑ݸᥒతࠩผʁ༗झޠ๏
ޒഒላӃ.01$0/ཧղࡉઅ༗झޠ๏
ޒഒላӃ.01$0/你ٕ֘ೳᴍᏐᴍࡏṜࠣํʂਓੜۤ
ޒഒላӃ.01$0/ಓཧେՈಓɼୠೳ၏౸తᔒଟগਓੜᴍᏐ
ޒഒላӃ.01$0/ٕೳᴍᏐ༗ݶਓੜᴍᏐ
ޒഒላӃ.01$0/Ռཁࢿࡏ+BWB4DSJQUతਓੜᴍᏐ
ޒഒላӃ.01$0/ਂೖ+BWB4DSJQUw݅ಋwവᏐ$MPTVSFwUIJTwඇಉ㑊႔ཧw&4.PEVMF
ޒഒላӃ.01$0/֘ላલᐽՍ嗎ʁ֘ላ哪ҰݸʁਓੜᴍᏐ"
ޒഒላӃ.01$0/ؐཁෆཁላK2VFSZʁਓੜᴍᏐ
ޒഒላӃ.01$0/֘ላࢿྉ݁ߏɺԋࢉ๏嗎ʁਓੜᴍᏐ
ޒഒላӃ.01$0/ؐ༗ॄኄʁਓੜᴍᏐ
ޒഒላӃ.01$0/൛ຊ߇੍ਓੜᴍᏐ非業配
ޒഒላӃ.01$0/"TTFUଧแ۩ਓੜᴍᏐ
ޒഒላӃ.01$0/ཆจ݅తश׳ਓੜᴍᏐ
ޒഒላӃ.01$0/ӳจਓੜᴍᏐ
ޒഒላӃ.01$0/ࢿҰఆ༗෩ᯃɼٕज़ࢿ༗ᩲ༗ഛɼਃߪલጯৄ閱ެ։說໌ॻɻਓੜᴍᏐ
ޒഒላӃ.01$0/ኺ৽ख্࿏౸അ్ࣝ
ޒഒላӃ.01$0/ૉਓ৬ޭతՄೳੑʁ৽खᢛഅ
ޒഒላӃ.01$0/զෆੋՊ൝ඟۀత৽खᢛഅ
ޒഒላӃ.01$0/զཁઌላ哪Ұఔࣜޠݴʁ৽खᢛഅ
ޒഒላӃ.01$0/ઌ辦๏፤౸ථʂ৽खᢛഅ
ޒഒላӃ.01$0/ઌᏓʮ৽खʯ৽खᢛഅ
ޒഒላӃ.01$0/၏ላతํࣜ৽खᢛഅ
ޒഒላӃ.01$0/େ෦份తٕज़ඃᚙ໌ग़ိੋཁղܾಛఆత৽खᢛഅ
ޒഒላӃ.01$0/അ్ࣝ೭༌ೖἫ৽खᢛഅ
ޒഒላӃ.01$0/ॏᴍɿจ݅ن֨खࣗզ৽खᢛഅ
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ޒഒላӃ.01$0/ෆཁ࠶૬৴ᔒ༗ࠜᎦత說๏ྃ৽खᢛഅ
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ޒഒላӃ.01$0/ᩇॻʂ৽खᢛഅ
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ޒഒላӃ.01$0/ਪનॻw:PV%POU,OPX+4ܥྻw᮷阱ʂޡղʂఱॏ৽ೝࣝ+BWB4DSJQUʂw&MPRVFOU+BWB4DSJQUw&GGFDUJWF+BWB4DSJQU
ޒഒላӃ.01$0/閱ᩇݪ࢝ᛰ৽खᢛഅ
ޒഒላӃ.01$0/( function( global, factory ) {"use strict";// 略略} )( typeof window !== "undefined" ? window : this,function( window, noGlobal ) {// 略略IIFE৽खᢛഅ
ޒഒላӃ.01$0/അ్ࣝ೭༌ग़Ἣ৽खᢛഅ
ޒഒላӃ.01$0/ࢪൺडߋ༗ಘ৽खᢛഅ
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ޒഒላӃ.01$0/ሜจষෆੋҝྃߚɺࣕੋҝྃࢥߟᢛࣗզሣ৽खᢛഅ
ޒഒላӃ.01$0/J5)PNFਓᩱ৽खᢛഅ
ޒഒላӃ.01$0/4JEF1SPKFDU৽खᢛഅ
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ޒഒላӃ.01$0/ෆཁযྀɺෆཁᛇ
ޒഒላӃ.01$0/photo by redjar
ޒഒላӃ.01$0/photo by Quality & Style
ޒഒላӃ.01$0/Ҏ্Ͱ͢ʂ
ޒഒላӃ.01$0/歡迎加好友