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JSX Looks Like An Abomination
TL;DRJSX is like a healthy vegetable that tastes like decadent chocolate cake. You feel guilty, but it’s good for you. (Tweet this). What is JSX?For those unfamiliar with React, JSX is an inline markup that looks like HTML and gets transformed to JavaScript. A JSX expression starts with an HTML-like open tag, and ends with the corresponding closing tag. JSX tags support the XML self close syntax s
React.js ã« XSS 対ç–を求ã‚ã‚‹ã®ã¯é–“é•ã£ã¦ã„ã‚‹ã ã‚ã†ã‹
Transcript 1. React.js ã« XSS 対ç–ã‚’ 求ã‚ã‚‹ã®ã¯é–“é•ã£ã¦ã„ã‚‹ ã ã‚ã†ã‹ #edomaesec 2015 5/30 LT 2. @clariroid 3. ãらり㩠4. React.js 5. React.js 6. React.js é’ã„ç´ 7. React.js • UI を構築ã™ã‚‹ JavaScript ライブラリ 8. React.js • UI を構築ã™ã‚‹ JavaScript ライブラリ • Virtual DOM 9. React.js • UI を構築ã™ã‚‹ JavaScript ライブラリ • Virtual DOM • Component Composable 10. React.js • UI を構築ã™ã‚‹ JavaScript ライブラリ • Virtual DOM • Component Composable • Server-side R
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テスト駆動開発（TDD）ã®ä¸€èˆ¬åŒ–ã¨GitHubã®ç™»å ´ã«ã‚ˆã£ã¦ã€æ©Ÿèƒ½è¿½åŠ ã®éš›ã«ã‚³ãƒ¼ãƒ‰ã¨ãƒ†ã‚¹ãƒˆã‚’åŒæ™‚ã«å®Ÿè£…ã™ã‚‹ï¼ˆãã—ã¦ã€ä¸¡è€…を一括ã—ã¦masterã«mergeã™ã‚‹ï¼‰ã¨ã„ã†é–‹ç™ºæ‰‹æ³•ãŒä¸€èˆ¬åŒ–ã—ã¦ãã¾ã—ãŸã€‚ ã—ã‹ã—ã€ã€Œè‰¯ã„プãƒã‚°ãƒ©ãƒ ã€ã®è¦ç´ を構æˆã™ã‚‹ã®ã¯ã€ã‚³ãƒ¼ãƒ‰ã¨ãƒ†ã‚¹ãƒˆã®ã¿ã§ã¯ã‚ã‚Šã¾ã›ã‚“。動作ã™ã‚‹ã‚³ãƒ¼ãƒ‰ã¨ã€ãã®å“質を担ä¿ã™ã‚‹ãŸã‚ã®ãƒ†ã‚¹ãƒˆãŒã‚ã£ãŸã¨ã—ã¦ã‚‚ã€é©åˆ‡ãªãƒ‰ã‚ュメントãŒãªã‘ã‚Œã°ã€ãƒ¦ãƒ¼ã‚¶ãƒ¼ã¯ãã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ã©ã†ã‚„ã£ã¦ä½¿ã£ãŸã‚‰è‰¯ã„ã‹ã‚ã‹ã‚Šã¾ã›ã‚“。 ã¤ã¾ã‚Šã€ãƒ¦ãƒ¼ã‚¶ãƒ¼ã«ä½¿ã„ã‚„ã™ã„プãƒã‚°ãƒ©ãƒ を継続的ã«é–‹ç™ºï¼æä¾›ã—よã†ã¨æ€ã†ã¨ã€ コード テスト ドã‚ュメント ã®ï¼“点セットをæä¾›ã™ã‚‹å¿…è¦ãŒã‚ã‚‹ã®ã§ã™æ³¨1。 今日ã®JSXãŒæŠ±ãˆã¦ã„る最大ã®èª²é¡Œã¯ã€ãƒ‰ã‚ュメントãŒä¸è¶³ã—ã¦ã„ã‚‹ã¨ã„ã†ç‚¹ã«ã‚ã‚Šã¾ã™ã€‚ãã®åŽŸå› ã¯ã€ã€Œæ©Ÿèƒ½è¿½åŠ ã€ã®éš›ã«ã‚³ãƒ¼ãƒ‰ã¨ãƒ†ã‚¹ãƒˆã®ã¿ã‚’実装ã—ã¦masterã«mergeã™ã‚‹ã“ã¨ã‚’ç¹°ã‚Šè¿”ã™ä¸€æ–¹ã§ã€ãƒ‰ã‚ュメントã¯
JSX 速ã•ã®ç§˜å¯† - 高速ãªJavaScriptを書ã方法
JavaScript ã§é«˜é€Ÿãªã‚³ãƒ¼ãƒ‰ã‚’書ã“ã†ã¨ã™ã‚‹éš›ã«ã€ã¯ã¾ã‚ŠãŒã¡ãªç½ ã¨ã€JSX ã®ã‚³ãƒ³ãƒ‘イラã§ã©ã®ã‚ˆã†ã«å¯¾å‡¦ã—ã¦ã„ã‚‹ã®ã‹ã‚’紹介
JSX - 公開ã‹ã‚‰ï¼‘å¹´ã‚’è¿Žãˆã¦
2. 自己紹介 nï®â€¯åå‰ï¼šå¥¥ 一穂 nï®â€¯çµŒæ´ï¼š nï®â€¯ãƒ¢ãƒã‚¤ãƒ«ã‚¦ã‚§ãƒ–ブラウザ「Palmscapeã€ã€ŒXiinoã€ã®é–‹ç™º (1996-2003) nï®â€¯IPA未è¸ã‚¹ãƒ¼ãƒ‘ークリエータ (2004) nï®â€¯ã‚µã‚¤ãƒœã‚¦ã‚ºãƒ»ãƒ©ãƒœ (2005-2010) nï®â€¯Japanize, Pathtraq, Q4M, mycached, … nï®â€¯ãƒ‡ã‚£ãƒ¼ãƒ»ã‚¨ãƒŒãƒ»ã‚¨ãƒ¼ (2010-) nï®â€¯R&Dã«å¾“事 Aug 24 2013 JSX - 公開ã‹ã‚‰ï¼‘å¹´ã‚’è¿Žãˆã¦ 2 3. altJS ã¨ã¯? nï®â€¯JavaScript ã«å¤‰æ›ã—ã¦å®Ÿè¡Œã•ã‚Œã‚‹è¨€èªž nï®â€¯èƒŒæ™¯: JavaScript ã®æ™®åŠ nï®â€¯ã‚¦ã‚§ãƒ–ブラウザã§å‹•ãã®ã¯ JavaScript ã ã‘ nï®â€¯ãƒ™ãƒ³ãƒ€ãƒ¼é–“ã®ç«¶äº‰ã®çµæžœã€å®Ÿè¡Œé€Ÿåº¦ãŒé«˜é€Ÿã« nï®â€¯ã‚¦ã‚§ãƒ–ブラウザ以外ã§ã‚‚ JavaScript を使ã†ã‚ˆã†ã« nï®â€¯ã‚µãƒ¼ãƒã‚µã‚¤ãƒ‰: node.js nï®â€¯ã‚¯ãƒ©ã‚¤ã‚¢
JSX minifierã®åœ§ç¸®æ€§èƒ½ - Islands in the byte stream (legacy)
JSX compilerã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã§æ¤œè¨¼ã—ã¦ã¿ã¾ã—ãŸ*1。 Mode Size(KiB) Ratio original 1507 1.00 JSX minifier 277 0.18 Closure Compiler/D 602 0.40 Closure Compiler/A 301 0.20 対象ã«ã—ãŸã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ãŒJSXã‹ã‚‰å¤‰æ›ã—ãŸJSã¨ã„ã†ã‚„や特殊ãªçŠ¶æ³ã§ã™ãŒã€Closure Compilerã®ADVANCED_OPTIMIZATIONSよりもサイズãŒå°ã•ããªã‚Šã¾ã—ãŸã€‚ã¾ãŸã€ADVANCED_OPTIMIZATIONSã¨ç•°ãªã‚ŠJSX minifier*2ã¯ã‚³ãƒ¼ãƒ‰ã‚’ç ´å£Šã™ã‚‹åœ§ç¸®ã¯ä¸€åˆ‡è¡Œã‚ãªã„ã®ã§ã€åœ§ç¸®ã—ãŸã‚‰ã‚³ãƒ¼ãƒ‰ãŒå‹•ã‹ãªããªã‚‹ã¨ã„ã†ã“ã¨ãŒéžå¸¸ã«èµ·ã“ã‚Šã«ãããªã£ã¦ã„ã¾ã™ã€‚ã—ã‹ã—ãã‚Œã§ã‚‚ã€JSXã®è±Šå¯Œãªåž‹æƒ…å ±ã‚’ä½¿ã£ã¦åœ§ç¸®ã™ã‚Œã°ADVANCED_OPTIMIZATIONSよりもサイズをå°
ãªãœJSXをセルフホスティングã™ã¹ããªã®ã‹ - Islands in the byte stream (legacy)
JSX をセルフホスティングã—ã¦npm packageã¨ã—ã¦ãƒªãƒªãƒ¼ã‚¹ã—ã¾ã—ãŸã€‚ https://npmjs.org/package/jsx ã•ã¦JSXコンパイラをJSXã§æ›¸ããªãŠã—ãŸã‚ã‘ã§ã™ãŒã€ã“ã‚Œã¯ä¸»ã«JSXコンパイラã®è³ªã‚’高ã‚ã‚‹ãŸã‚ã§ã™ã€‚JSXã¯JavaScriptã¨æ¯”較ã™ã‚‹ã¨å¤§è¦æ¨¡ãªé–‹ç™ºã«å‘ã„ã¦ã„ã‚‹ã€ã¨ã„ã†ã®ãŒJSX開発ãƒãƒ¼ãƒ ã®ä¸»å¼µã§ã™ã€‚ã§ã‚ã‚Œã°ã€JSXコンパイラをJSXã§æ›¸ãã“ã¨ã«ã‚ˆã‚Šè³ªã‚’高ã‚られるã¯ãšã§ã™ã€‚事実ã€ä»Šå›žã®ã‚»ãƒ«ãƒ•ãƒ›ã‚¹ãƒ†ã‚£ãƒ³ã‚°ã§typoやリファクタ時ã®ã‚¨ãƒ³ãƒã‚°ã€é–¢æ•°ã®å¼•æ•°é–“é•ã„ãªã©ã«ã‚ˆã‚‹ãƒã‚°ãŒã„ãã¤ã‚‚見ã¤ã‹ã‚Šæ”¹ä¿®ã•ã‚Œã¾ã—ãŸã€‚セルフホスティングã¯ã‚³ãƒ³ãƒ‘イラã®å“質を高ã‚る一助ã«ãªã£ãŸã¨ã„ãˆã¾ã™ã€‚ ã¾ãŸã‚‚ã†ã²ã¨ã¤ã€ä»Šå›žã®JSXコンパイラã®é–‹ç™ºã¯JSXã«ã‚ˆã‚‹é–‹ç™ºã§ã‚ã‚Šã€ã“ã®éŽç¨‹ã§å¾—ãŸçŸ¥è¦‹ãŒæ•°å¤šãã‚ã‚Šã¾ã™ã€‚ã“ã‚Œã«ã‚ˆã‚Šã€ãŸã¨ãˆã°asã®å¤±æ•—ãŒnullã‚’è¿”ã™ã®ã§ã¯ãªã例外を返ã™ã‚ˆã†ã«ã™
JSXã®å¦ã³æ–¹ - Islands in the byte stream (legacy)
JSXã‚’ã©ã†ã‚„ã£ã¦å¦ã¹ã°ã‚ˆã„ã‹ã€ãƒ¡ãƒ¢ã—ã¦ãŠãã¾ã™ã€‚ 言語仕様 言語仕様㯠jsx.github.com ã«ãƒ‰ã‚ュメントãŒã‚ã‚‹ã»ã‹ã€å®Ÿä¾‹ã¨ã—ã¦ã¯è¨€èªžä»•æ§˜ã®ãƒ†ã‚¹ãƒˆã§ã‚ã‚‹ JSX/t/run/*.jsx ãŒå‚考ã«ãªã‚Šã¾ã™ã€‚特㫠JSX/t/run/*.jsx ã¯å®Ÿéš›ã«é–‹ç™ºã™ã‚‹ã¨ãªã‚‹ã¨é »ç¹ã«grep ã™ã‚‹ã“ã¨ã«ãªã‚‹ã¨æ€ã„ã¾ã™ã€‚ http://jsx.github.com/doc.html https://github.com/jsx/JSX/tree/master/t/run ã¾ãŸã€çµ„ã¿è¾¼ã¿é–¢æ•°ã®æŒ™å‹•ã¯JavaScriptã¨åŒã˜ãªã®ã§ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã¨ã—ã¦ã¯MDNãŒã„ã„ã§ã—ょã†ã—ã€å®Ÿéš›ã®ã‚·ã‚°ãƒãƒãƒ£ã¯ lib/built-in.jsx を見るã¨ã„ã„ã§ã—ょã†ã€‚ DOMæ“作 / ブラウザAPI DOM用APIã¯ã€"js/web.jsx" ã‚’importã™ã‚‹å¿…è¦ãŒã‚ã‚‹ã“ã¨ã€windowã‚„documentãŒã‚°ãƒ
Dartã§éŠã‚“ã§ã¿ã‚ˆã†.2 [vs JSX ãã®1] | Codelogy
ã“ã‚“ã°ã‚“ã¯ï¼ 第二回ã¯Dartã¨ä»–ã®è¨€èªžã¨ã®æ¯”較ã¨ã„ã†ã“ã¨ã§ã€DeNA発ã®JSXã¨ã„ã†ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã¨ã®æ¯”較を行ãªã£ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚vs JSXã§ã™ï¼ 1回ã§ã¯çºã¾ã‚Šãã†ã«ãªã„ã®ã§ã€è¤‡æ•°å›žã«åˆ†ã‘ã¦ã„ã“ã†ã¨æ€ã„ã¾ã™ã€‚ ãã‚Œã§ã¯ã€è»½ãJSXã®èª¬æ˜Žã‚’è¡Œã„ã¾ã™ã€‚Dartã«ã¤ã„ã¦ã¯å‰å›žã® Dartã§éŠã‚“ã§ã¿ã‚ˆã†.1 ã‚’ã”覧ãã ã•ã„ï¼ JSXã¨ã¯ã€DeNAã«ã‚ˆã£ã¦é–‹ç™ºã•ã‚ŒãŸã‚ªãƒ–ジェクト指å‘ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã§ã™ã€‚ Dartã¨åŒã˜ãJSXã®ã‚³ãƒ¼ãƒ‰ã¯JavaScriptã«ã‚³ãƒ³ãƒ‘イルã•ã‚Œã‚‹ãŸã‚ã€node.jsやブラウザ上ã§å‹•ä½œã•ã›ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ 文法ã¯JavaScriptã«ã¨ã¦ã‚‚è¿‘ã„ã®ã§ã€JavaScriptユーザーã¯ã™ãã«æ›¸ã始ã‚ã‚‹ã“ã¨ãŒå‡ºæ¥ã‚‹ã¯ãšã§ã™ã€‚ ãã—ã¦æœ€å¤§ã®å£²ã‚Šã¯ã€é™çš„型付ã‘ã§ã‚ã‚‹ã“ã¨ã ã¨æ€ã„ã¾ã™ã€‚ é™çš„型付ã‘ã¯ã€æ‰“ã¡é–“é•ãˆã«ã‚ˆã‚‹äº›ç´°ãªãƒŸã‚¹ã‚„ã€é–“é•ã£ãŸå€¤ã®ä»£å…¥ã€èª¤ã£ãŸåž‹
JSX 㧠Array#forEach ãŒï¼•å€ä»¥ä¸Šé€Ÿããªã£ãŸè©± - kazuhoã®ãƒ¡ãƒ¢ç½®ãå ´
JSX ã®é€²åŒ–速度ãŒåŠç«¯ãªã„ - ãã‚‹ãる～ ã§ç´¹ä»‹ã—ã¦ã„ãŸã ã„ã¦ã„ã‚‹ã¨ãŠã‚Šã€æœ€æ–°ã® JSX ã§ã¯ function expression ã®åž‹å®£è¨€ã‚’çœç•¥ã§ãるよã†ã«ãªã£ã¦ã„ã¾ã™ã€‚ã“れを利用ã—ã¦ã€ãŸã¨ãˆã°é…列ã®åˆè¨ˆã‚’求ã‚ã‚‹å ´åˆã€ var sum = 0; [ 1, 2, 3, 4, 5, 6, 7, 8 ].forEach(function (n) { sum += n; }); ã®ã‚ˆã†ã«ã€JavaScript 㨠100% åŒæ§˜ã«æ›¸ãã“ã¨ãŒã§ãるよã†ã«ãªã‚Šã¾ã—ãŸã€‚çœç•¥å½¢ã‚’利用ã—㦠[ ... ].forEach((n) -> { sum + n; }); ã§ã‚‚ã„ã„ã§ã™ã€‚ ã¨ã“ã‚ã§ã“ã®ã‚³ãƒ¼ãƒ‰ã€è¦‹ãŸç›®ã¯åŒã˜ãªã‚“ã§ã™ãŒã€å®Ÿã¯ JSX ã 㨠JavaScript よりも５å€ä»¥ä¸Šé€Ÿãå‹•ãã‚“ã§ã™ã€‚ã¾ã 最é©åŒ–ãŒã‚ã¾ã„ã¨ã“ã‚ãŒã‚ã‚‹ã®ã«ã€‚ ãªãœã‹ã€‚JavaScript ã® Array#forEach ã¯é…
JSXã«ãƒ†ãƒ³ãƒ—レート型サãƒãƒ¼ãƒˆå…¥ã‚Œå§‹ã‚㟠- kazuhoã®ãƒ¡ãƒ¢ç½®ãå ´
ã¾ã master ã«ã¯ãƒžãƒ¼ã‚¸ã—ã¦ãªã„ã§ã™ãŒ kazuho/user-defined-templates ブランãƒã®ã‚„ã¤ã‚’使ã†ã¨ã€ class Adder.<T> { static function f(x : T, y : T) : T { return x + y; } } class Test { static function run() : void { var n = Adder.<number>.f(1, 3); log n; var s = Adder.<string>.f("abc", "def"); log s; } } ãŒã€æœ€é©åŒ–オプション (--optimize inline,fold-const) ã§ã‚³ãƒ³ãƒ‘イル後㫠Test.run$ = function () { /** @type {!number} */ var n; /** @type {!string}
JSX - a faster, safer, easier JavaScript
JSX is a statically-typed, object-oriented programming language designed to run on modern web browsers. Being developed at DeNA as a research project, the language has following characteristics. faster JSX performs optimization while compiling the source code to JavaScript. The generated code runs faster than an equivalent code written directly in JavaScript. The gain may vary, but even the optimi
JSX
JSX is a strictly-typed object-oriented programming language that is compiled to JavaScript. It aims to provide higher productivity than JavaScript through strong typing while generating code that runs faster than plain JavaScript. Some key points: - JSX code is compiled to optimized JavaScript using type information for performance gains - It has classes and functions like Java but compiles to Ja
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javascript/react at master · airbnb/javascript
JSX ã®ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ãŒç´ 晴らã—ã„ï¼ - ã‚らã³ã日記
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