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ECMAScript 5: The Definitive Slides
ECMAScript 5: The Definitive Slides David Flanagan http://davidflanagan.com [email protected] Overview of ES5 Useful new APIs Mostly things that can already be done in ES3 Property and object attributes getters and setters, constants, non-enumerable methods, sealed and frozen objects partially implemented in latest Firefox and Chrome alphas. Strict semantics opt-in strict mode; not backward-
ECMAScript-262 5th Edition(ES5) 予約語一覧 㨠ãã®ä»²é–“é” - latest log
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Changes to JavaScript, Part 1: EcmaScript 5
Author: Mark S. Miller, Waldemar Horwat, Mike Samuel View presentation on YouTube. Download slides (OpenOffice) (PowerPoint) (PDF)
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最近ã€WebKitã«Object.definePropertyã€Object.definePropertiesã€Object.getOwnPropertyDescriptorç‰ã€ä»Šã¾ã§é–“接的ã«ã—ã‹ã„ã˜ã‚Œãªã‹ã£ãŸã‚Šã€JSã‹ã‚‰ã¯è¨å®šã™ã‚‹ã“ã¨ã®ã§ããªã‹ã£ãŸå†…部プãƒãƒ‘ティをæ“作ã™ã‚‹ãŸã‚ã®ãƒ¡ã‚½ãƒƒãƒ‰ãŒå…¥ã£ãŸã€‚ç¾æ™‚点ã®WebKitã«å…¥ã£ã¦ã„ã‚‹ECMAScript5ã®æ–°ã—ã„機能をã“ã“ã«ãƒ¡ãƒ¢ã—ã¦ãŠã。 const： const foo = "hello"; 定数を宣言ã™ã‚‹ãŸã‚ã®const文。ãŸã ã€ä½•æ•…ã‹fooã«å€¤ã‚’å†ä»£å…¥ã§ãã¦ã—ã¾ã†ï¼ˆï¼Ÿï¼‰ã‚ˆã†ã 。 Array#forEachã€Array#someç‰ï¼š [1, 2, 3, 4].forEach(function (v, i) { alert(v + ", " + i); }); 今ã¾ã§foræ–‡ãªã©ã‚’使ã£ã¦æ›¸ã„ã¦ã„ãŸç‰©ã‚’高階関数を使ã£ã¦æŠ½è±¡åŒ–ã—ãŸãƒ¡ã‚½ãƒƒãƒ‰é”。Ar
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