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閱讀原始碼 - 再戰十年的 jQuery
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高見龍
July 31, 2022
Programming
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閱讀原始碼 - 再戰十年的 jQuery
- 檢視 jQuery 設計架構
- 欣賞一些有趣的寫法
- 理解設計原理後,試著復刻一個陽春版的 jQuery
高見龍
July 31, 2022
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Transcript
ޒഒላӃ ࠶ፌेɽK2VFSZ 高見龍
ޒഒላӃ ࣗզհ
ޒഒላӃ a.k.a Eddie 愛現! 喜歡冷門的玩具 開發者 / 講師 / 電腦書作者
技術推廣、教育、技術諮詢 台灣、日本等國內外技術研討會講者 部落格:https://kaochenlong.com 高見龍 @eddiekao
ޒഒላӃ 第25刷 發售中 發售中 發售中
ޒഒላӃ 已絕版
ޒഒላӃ 敬請 期待
ޒഒላӃ 歡迎加 好友
ޒഒላӃ ຊจ։࢝
ޒഒላӃ ฏৗ༗ࡏሜ+BWB4DSJQU嗎ʁ 🙋
ޒഒላӃ ᡒ說ݱࡏେՈࡏሜ7"3
ޒഒላӃ 7"37VF "OHVMBS 3FBDU
ޒഒላӃ ྃɼؐ༗ਓ
ޒഒላӃ ؐ༗ਓࡏሜK2VFSZ嗎ʁ 🙋
ޒഒላӃ શੈքࢢ佔࠷ߴతલ݅ʁ
ޒഒላӃ ૢ࡞ᖣ᧸ثత%0.݅
ޒഒላӃ ލᖣ᧸ثࢧԉʂ
ޒഒላӃ ஐܛ݁থ
ޒഒላӃ େᢇ၊ઃҰԼ w 你ಓᏓᏐత4DPQFੋॄኄ w 你ಓॄኄੋ'VODUJPO w ἦ಄വᏐ w **'&ʢ*OUFSNFEJBUF*OWPLF'VODUJPO&YQSFTTJPOʣ
w 你ಓ+BWB4DSJQUཫత݅ಋੋዎኄճࣄ w 1SPUPUZQF᪑OFXత᮫ w 你ಓUIJTዎኄ
ޒഒላӃ -JWFʂ
ޒഒላӃ ֢ॏᴍʂ
ޒഒላӃ (function(global, factory) { ...略... })(typeof window !== "undefined" ?
window : this, ...略... L14 ~ L40 IIFE 起⼿式
ޒഒላӃ ...略... ...略..., function(window, noGlobal) { ...略... return jQuery; });
L40 ~ L10880 jQuery 本體
ޒഒላӃ var version = "3.6.0", jQuery = function(selector, context) {
return new jQuery.fn.init(selector, context); }; L157 ~ L162 jQuery 定義
ޒഒላӃ var Sizzle = ( function( window ) { var
i, ...略... return Sizzle; } )( window ); L523 ~ L2978 Sizzle.js
ޒഒላӃ jQuery.find = Sizzle; jQuery.expr = Sizzle.selectors; L2982 ~ L2983
把 Sizzle 灌給 jQuery
ޒഒላӃ init = jQuery.fn.init = function( selector, context, root )
{ var match, elem; // HANDLE: $(""), $(null), $(undefined), $(false) if ( !selector ) { return this; } ...略... return jQuery.makeArray( selector, this ); }; L3137 ~ L3234 初始化在這裡!
ޒഒላӃ init.prototype = jQuery.fn; L3237 讓 new 出來的 jQuery 物件,享
有整個 jQuery 的 prototype
ޒഒላӃ jQuery.event = { global: {}, add: function( elem, types,
handler, data, selector ) { ...略... } ...略... }; L5190 ~ L5607 事件處理
ޒഒላӃ ajax: function( url, options ) { if ( typeof
url === "object" ) { options = url; url = undefined; } ...略... return jqXHR; }, L9378 ~ L9824 ajax
ޒഒላӃ var _jQuery = window.jQuery, _$ = window.$; jQuery.noConflict =
function(deep) { if (window.$ === jQuery) { window.$ = _$; } if (deep && window.jQuery === jQuery) { window.jQuery = _jQuery; } return jQuery; }; L10850 ~ L10868 如果有衝突的話...
ޒഒላӃ if ( typeof noGlobal === "undefined" ) { window.jQuery
= window.$ = jQuery; } L10850 ~ L10868 把 jQuery 放到全域變數
ޒഒላӃ 歡迎加 好友