[B! Javascript][ECMAScript] justoneplanetã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

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Javascriptã¨ECMAScriptã«é–¢ã™ã‚‹justoneplanetã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (18)

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è©³ç´° ECMA-262-3 ç¬¬8ç« è©•ä¾¡æˆ¦ç•¥ - mixi engineer blog
å…¨å›½20äººã® ECMA ã‚»ã‚ªãƒªã‚¹ãƒˆã®ã¿ãªã•ã¾ã€ãŠã¤ã‹ã‚Œã•ã¾ã§ã™ã€‚å¤§å½¢å°šå¼˜ã§ã™ã€‚ ã¤ã„ã« Dmitry å…ˆç”Ÿã® ES3 ã‚·ãƒªãƒ¼ã‚ºã‚‚æœ€çµ‚ç« ã¨ãªã‚Šã¾ã—ãŸã€‚ã“ã®å¾Œã« ES5 ã‚·ãƒªãƒ¼ã‚ºãŒ5ç« ç¶šãã¾ã™ãŒã€ãã‚Œã‚‰ã¯åŸºæœ¬çš„ã«ä»Šã‚·ãƒªãƒ¼ã‚ºã®è£œè¶³ã¨ã—ã¦æ›¸ã‹ã‚ŒãŸã‚‚ã®ã§ã™ã®ã§ã€ã“ã“ã¾ã§ãŠèªã¿ã„ãŸã ã„ãŸã¿ãªã•ã¾ã¯ã€ã»ã¼ ECMAScript ã®ç†è«–çš„å´é¢ã‚’ç†è§£ã—ãŸã¨è¨€ãˆã¾ã™ã€‚ ã‚‚ã—ãã†ã§ãªã„éƒ¨åˆ†ãŒã‚ã£ãŸã¨ã—ã¦ã‚‚ã€å®Ÿéš›ã« ECMAScript ã®ä»•æ§˜æ›¸ã‚’ã”è¦§ã„ãŸã ã‘ã‚Œã°ã€ã“ã‚Œã¾ã§ã¨ã¯å…¨ãç†è§£åº¦ãŒé•ã£ã¦ã„ã¦ã€ã‚ã£ã¨ã„ã†é–“ã«è¶³ã‚Šãªã„çŸ¥è˜ã‚’è£œè¶³ã§ãã‚‹ã¨æ€ã„ã¾ã™ã€‚ç«¯çš„ã«ã€ã€Œä»•æ§˜ãŒèªã‚ã‚‹ã€ã‚ˆã†ã«ãªã£ã¦ã„ã‚‹ã¯ãšã§ã™ã€‚ ES5 ã§ã‚ã‚Œã°ã€æœ¬æ¥ PDF ã§ã‚ã‚‹ä»•æ§˜æ›¸ã‚’ã€æœ‰å¿—ã®æ–¹ãŒ es5.github.com ã«ã¦ã€Œæ³¨é‡ˆä»˜ãã®ã€ HTML å½¢å¼ã§å…¬é–‹ã—ã€é »ç¹ã«æ›´æ–°ã•ã‚Œã¦ã„ã¾ã™ã€‚æ³¨é‡ˆã®ä¸€ã¤ã¯ã‚‚ã¡ã‚ã‚“æˆ‘ã‚‰ãŒ Dmitry å…ˆç”Ÿã® ES ã‚·
justoneplanet 2012/01/31
Javascript

ECMAscript
ãƒªãƒ³ã‚¯
è©³ç´° ECMA-262-3 ç¬¬4ç« ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³ - mixi engineer blog
ã©ã†ã‚‚ãŠã¤ã‹ã‚Œã•ã¾ã§ã”ã–ã„ã¾ã™ã€‚å¤§å½¢å°šå¼˜ã§ã”ã–ã„ã¾ã™ã€‚å…ˆæ—¥ã€ tumblr developer meetup 2011 ã«å‚åŠ ã•ã›ã¦ã„ãŸã ãã€ã€Œãƒªãƒ–ãƒã‚°ã®ã“ã®å¿«æ„Ÿã‚’ã©ã®ã‚ˆã†ã«ã‚µãƒ¼ãƒ“ã‚¹ã«å–ã‚Šå…¥ã‚Œã‚‹ã‹ã€ã«ã¤ã„ã¦ã”å‚åŠ ã®çš†æ§˜ã¨ç†±ã„è°è«–ã‚’äº¤ã‚ã—ãŸã®ã§ã™ãŒã€20æ™‚ã‚’éŽãŽãŸè¾ºã‚Šã§å…¨å“¡ã€Œãã‚ãã‚æ—©ãå¸°ã£ã¦ãƒªãƒ–ãƒã‚°ã—ãŸã„ãª...ã€ã¨ã„ã†æ°—æŒã¡ã«ãªã‚Šã¾ã—ãŸãŸã‚ã‚¹ãƒƒã¨è§£æ•£ã«ãªã£ãŸã®ãŒå°è±¡çš„ã§ã—ãŸã€‚ ã¡ãªã¿ã«ã€ã€ŒãŸã‚“ã½ã½ã‚°ãƒ«ãƒ¼ãƒ—ã€ã¯å®Ÿåœ¨ã„ãŸã—ã¾ã™ã€‚ã¿ãªã•ã‚“ã®å¿ƒã®ä¸ã«...ã€‚ ã¨ã„ã†ã‚ã‘ã§ã€ Dmitry å…ˆç”Ÿã® ECMA-262-3 ã‚·ãƒªãƒ¼ã‚ºã‚‚ã„ã‚ˆã„ã‚ˆä¸ç›¤ã€ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³ã«ã¤ã„ã¦ã”ä¸€ç·’ã«å‹‰å¼·ã•ã›ã¦ãã ã•ã„ã€‚ è©³ç´° ECMA-262-3 ã‚·ãƒªãƒ¼ã‚º ç¬¬1ç« å®Ÿè¡Œã‚³ãƒ³ãƒ†ã‚ã‚¹ãƒˆ ç¬¬2ç« å¤‰æ•°ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆ ç¬¬3ç« this ç¬¬4ç« ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³ ç¬¬5ç« é–¢æ•° ç¬¬6ç« ã‚¯ãƒãƒ¼ã‚¸ãƒ£ ç¬¬7ç« 1ç¯€ OOP: æ¦‚èª¬ ç¬¬7ç« 2
justoneplanet 2011/12/25
mixi

ECMAScript

JavaScript

ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³
ãƒªãƒ³ã‚¯
è©³ç´° ECMA-262-3 ç¬¬3ç« this - mixi engineer blog
ã©ã†ã‚‚ãŠã¤ã‹ã‚Œã•ã¾ã§ã”ã–ã„ã¾ã™ã€‚ãŸã‚“ã½ã½ã‚°ãƒ«ãƒ¼ãƒ—ã®å¤§å½¢å°šå¼˜ã§ã”ã–ã„ã¾ã™ã€‚å¥½ããªè¨€èªžã¯ Dylan ã§ã™ã€‚å¥½ããªå£°å„ªã¯äº”ååµè£•ç¾Žã•ã‚“ã§ã™ã€‚ ã•ã¦ã€é€±åˆŠã®ã¯ãšãŒæœˆåˆŠã«ãªã£ã¦ã—ã¾ã£ãŸã€ Dmitry å…ˆç”Ÿã® ECMA-262-3 ã‚·ãƒªãƒ¼ã‚ºã®ç¬¬3ç« ã‚’ãŠé€ã‚Šã—ã¾ã™ã€‚æ–‡ä¸ã€æœªã è¨³å‡ºã®çµ‚ã‚ã£ã¦ã„ãªã„ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³ã‚„é–¢æ•°ã®ç« ã¸ã®å‚ç…§ãŒã‚ã‚Šã¾ã™ãŒã€ç‰¹ã«ã‚¹ã‚³ãƒ¼ãƒ—ãƒã‚§ãƒ¼ãƒ³ã«ãŠã„ã¦ã“ã®æ™‚ç‚¹ã§ã‚ã‚‹ç¨‹åº¦ç†è§£ã—ã¦ãŠããŸã„ã¨ãŠæ„Ÿã˜ã«ãªã‚‹æ–¹ã‚‚ã„ã‚‰ã£ã—ã‚ƒã‚‹ã‹ã¨æ€ã„ã¾ã™ã€‚ãã®è¾ºã‚Šã¯ã€ä»¥å‰ç§å€‹äººã®ãƒ–ãƒã‚°ã§ç¿»è¨³ãƒ»å…¬é–‹ã•ã›ã„ãŸã ã„ãŸã‚³ã‚¢ãƒ»JavaScript ( JavaScript. The Core. )ã§ã‚‚ç°¡å˜ã«è§¦ã‚Œã‚‰ã‚Œã¦ãŠã‚Šã¾ã™ã®ã§ã€é©å®œã”å‚ç…§ãã ã•ã„ã€‚ ã¾ãŸã€æœ¬ç« ã¨ã¯å…¨ç„¶é–¢ä¿‚ãªã„ã®ã§ã™ãŒã€å…ˆæ—¥ JavaScript Advent Calendar 2011 (ã‚ªãƒ¬æ¨™æº–ã‚³ãƒ¼ã‚¹)ã«å‚åŠ ã•ã›ã¦ã„ãŸã ãã€ ECMAScript
justoneplanet 2011/12/24
ECMAscript

javascript

mixi
ãƒªãƒ³ã‚¯
ECMAScript ã¨ OOP ãƒ‘ãƒ©ãƒ€ã‚¤ãƒ ã€ãã‚Œã« ES.next ã®è°è«–ä¸ OOP å‘¨ã‚Šã®ã‚·ãƒ³ã‚¿ãƒƒã‚¯ã‚¹ - oogatta ã®ãƒ–ãƒã‚°
JavaScript Advent Calendar 2011 (ã‚ªãƒ¬æ¨™æº–ã‚³ãƒ¼ã‚¹)4æ—¥ç›®ã® id:oogatta ã§ã™ã€‚ã©ã†ã‚‚ã©ã†ã‚‚ã€ã„ã‚„ã©ã†ã‚‚ã€‚ æœ€è¿‘ä¸åº¦ ES Wiki ã‚’çœºã‚ã¦ã„ã¦ã€é¢ç™½ã„ã“ã¨ã«ãªã£ã¦ã‚‹ãªã‚ã€‚å¤‰æ…‹çš„ãªã“ã¨ã«ãªã£ã¦ã‚‹ãªã‚ã€‚ã¨æ¥½ã—ãè¦‹ã¦ã„ãŸ OOP ãƒ‘ãƒ©ãƒ€ã‚¤ãƒ å‘¨ã‚Šã®ã„ãã¤ã‹ã®æ‰‹æ³•ï¼ˆå®šç¾©ã€ç¶™æ‰¿ã€ mixin ã€ trait ï¼‰ã«ã¤ã„ã¦ã€ ES.next ã¾ãŸã¯ Harmony ã§è°è«–ã•ã‚Œã¦ã„ã‚‹ã‚‚ã®ã‚’ã”ä¸€ç·’ã«èª¿ã¹ãªãŒã‚‰ã”ç´¹ä»‹ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ECMAScript3 ã•ã¦ã€å¾©ç¿’ã¨ã—ã¦ã¾ãšã¯ ES3 ã§ã® OOP ãƒ‘ãƒ©ãƒ€ã‚¤ãƒ ã®å®Ÿè£…ã«ã¤ã„ã¦ã§ã™ãŒã€ã“ã‚Œã¯ã‚‚ã† Dmitry å…ˆç”Ÿã® ECMA-262-3 in detail. Chapter 7.1. OOP: The general theory. ã‚’èªã‚“ã§ãã ã•ã„ã¨ã„ã†ã‹ã€æ°—æŒã¡ã‚ˆãä¸¸æŠ•ã’ã—ãŸã„ã¨ã“ã‚ã§ã™ãŒã€ç¿»è¨³ã™ã‚‹ã¨è¨€ã£ã¦ã¾ã
justoneplanet 2011/12/11
ECMAscript

javascript
ãƒªãƒ³ã‚¯
ECMAScript 6ã«å‘ã‘ã€ã‚ˆã£ã¦ãŸã‹ã£ã¦é€²åŒ–ãŒç¶šãJavaScript
JavaScriptã¯Ecma Internationalã¨å‘¼ã°ã‚Œã‚‹æ¨™æº–åŒ–å›£ä½“ã«ã‚ˆã£ã¦è¨€èªžä»•æ§˜ã®æ¨™æº–åŒ–ãŒè¡Œã‚ã‚Œã¦ã„ã¾ã™ã€‚æœ€æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ã€2009å¹´12æœˆã«ç–å®šã•ã‚ŒãŸECMAScript 5th Editonã€‚ã“ã‚ŒãŒæ˜¨å¹´4æœˆã«ISO/IEC 16262 3rd Editionã¨ã—ã¦å›½éš›æ¨™æº–ã«ã‚‚ãªã‚Šã¾ã—ãŸã€‚ãã®å¾Œã€æ˜¨å¹´ã®6æœˆã«ã¯ä¿®æ£ç‰ˆã®ECMAScript 5.1ãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ ç¾åœ¨ã®Webãƒ–ãƒ©ã‚¦ã‚¶ãŒJavaScriptã®ä»•æ§˜ã¨ã—ã¦å‚ç…§ã—ã¦ã„ã‚‹ã®ãŒã€ã“ã®ECMAScriptä»•æ§˜ã§ã™ã€‚ ãã—ã¦æ¬¡æœŸç‰ˆECMAScriptã¨ã—ã¦ã€ECMAScript 6th Editionã‚‚ã—ãã¯ES.nextã‚‚ã—ãã¯Project Harmonyãªã©ã¨å‘¼ã°ã‚Œã‚‹ä»•æ§˜ç–å®šä½œæ¥ãŒé€²è¡Œä¸ã§ã™ã€‚2013å¹´æœ«ã®ç–å®šå®Œäº†ã‚’äºˆå®šã—ã¦ã„ã‚‹ã‚ˆã†ã§ã™ã€‚ ãã‚Œã¾ã§ã¾ã 2å¹´ã‚ã‚Šã¾ã™ãŒã€ã™ã§ã«æ¬¡æœŸç‰ˆECMAScriptã«é–¢ã™ã‚‹æƒ…å ±ãŒ
justoneplanet 2011/11/30
ECMAscript

javascript
ãƒªãƒ³ã‚¯
IPAã€æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚¹ãƒšã‚·ãƒ£ãƒªã‚¹ãƒˆè©¦é¨“ã®å¯¾è±¡è¨€èªžã«JavaScriptã‚’è¿½åŠ ã€Perlã‚’å¤–ã™
IPAï¼ˆç‹¬ç«‹è¡Œæ”¿æ³•äººæƒ…å ±å‡¦ç†æŽ¨é€²æ©Ÿæ§‹ï¼‰ã¯10æœˆ26æ—¥ã€æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£æŠ€è¡“ã®å°‚é–€å®¶ã¨ã—ã¦æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ç®¡ç†ã‚’æ”¯æ´ã™ã‚‹äººã‚’å¯¾è±¡ã¨ã—ãŸã€Œæƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚¹ãƒšã‚·ãƒ£ãƒªã‚¹ãƒˆè©¦é¨“ã€ã«ãŠã„ã¦ã€ã“ã‚Œã¾ã§å‡ºé¡Œå¯¾è±¡ã¨ã—ã¦ã„ãŸC++ã€Javaã€Perlã®3ç¨®é¡žã®è¨€èªžã‹ã‚‰Perlã‚’å¤–ã—ã€JavaScriptã‚’è¿½åŠ ã™ã‚‹ã“ã¨ã‚’ç™ºè¡¨ã—ã¾ã—ãŸã€‚ JavaScriptã€JScriptãªã©ã‚’æ¨™æº–åŒ–ã™ã‚‹ç›®çš„ã§ä½œæˆã•ã‚ŒãŸã€ŒECMAScriptã€ã‚’è¿½åŠ ã—ã€ã€ŒPerlã€ã‚’å‰Šé™¤ã™ã‚‹ã€‚ ä¸Šè¨˜ã®å¤‰æ›´ã¯å¹³æˆ24å¹´åº¦æ˜¥æœŸè©¦é¨“ã‹ã‚‰å®Ÿæ–½ã•ã‚Œã¾ã™ã€‚ JavaScriptã®åˆ©ç”¨ãŒä¸€èˆ¬çš„ã« æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚¹ãƒšã‚·ãƒ£ãƒªã‚¹ãƒˆè©¦é¨“ã¯ã€ã€Œæƒ…å ±ã‚·ã‚¹ãƒ†ãƒ ã®ä¼ç”»ãƒ»è¦ä»¶å®šç¾©ãƒ»é–‹ç™ºãƒ»é‹ç”¨ãƒ»ä¿å®ˆã«ãŠã„ã¦ã€æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãƒãƒªã‚·ã«æº–æ‹ ã—ã¦ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£æ©Ÿèƒ½ã®å®Ÿç¾ã‚’æ”¯æ´ã—ã€åˆã¯æƒ…å ±ã‚·ã‚¹ãƒ†ãƒ åŸºç›¤ã‚’æ•´å‚™ã—ã€æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£æŠ€è¡“ã®å°‚é–€å®¶ã¨ã—ã¦æƒ…å ±ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ç®¡ç†ã‚’æ”¯æ´ã™ã‚‹è€…ã€ã‚’å¯¾è±¡
justoneplanet 2011/11/04
perl

ECMAScript

javascript
ãƒªãƒ³ã‚¯
Let's WeakMap - æž•ã‚’æ¬¹ã¦ã¦è´ã
ES.nextã¨ã—ã¦å…¥ã£ã¦ã„ã¦, ECMAScript 6ã«ã‚‚å…¥ã‚Šãã†ãªæ°—é…ãŒã™ã‚‹WeakMap. ã¨ã„ã†è¨³ã§. WeakMapã¨ã¯ WeakMapã¨ã¯, harmony:weak_maps [ES Wiki] keyã¸ã®å‚ç…§ãŒå¼±å‚ç…§ keyãŒä»»æ„ã®Object valueã¯ãªã‚“ã§ã‚‚ã‚ã‚Š ã¨ã„ã†ã‚‚ã®ã§ã™. å¼±å‚ç…§ã§ã‚ã‚‹ãŸã‚, WeakMapã®keyã«æŒ‡å®šã•ã‚ŒãŸObjectãŒ, weakãªreferenceã‹ã‚‰ã—ã‹å‚ç…§ã•ã‚Œã¦ã„ãªã‹ã£ãŸå ´åˆ, GCã«å›žåŽã•ã‚Œã¾ã™. ã¾ãŸ, WeakMapã¨ã„ã†åå‰ãŒéš ã—ãŒã¡ã§ã™ãŒ, ã©ã¡ã‚‰ã‹ã¨è¨€ã†ã¨ä¸»æ©Ÿèƒ½ã¯ä»»æ„ã®ObjectãŒkeyã¨ã—ã¦å–ã‚Œã‚‹ã¨ã„ã†ã“ã¨ã§ã—ã‚‡ã†. var map = new WeakMap(); var obj = {}; map[obj] = "OK"; // ã“ã®ã¨ã, toString()ã•ã‚ŒãŸã‚Šã—ãªã„. Objectã‚’ã¨ã‚Œã‚‹ å¾“æ¥ã®O
justoneplanet 2011/10/10
JavaScript

WeakMap

ECMAScript
ãƒªãƒ³ã‚¯
Lightweight Language Planets : å…¬é–‹è³‡æ–™
å½“æ—¥ä½¿ã‚ã‚ŒãŸã‚¹ãƒ©ã‚¤ãƒ‰ã®ã†ã¡ã€è¨±å¯ã„ãŸã ã„ãŸã‚‚ã®ã‚’å…¬é–‹ã—ã¦ã„ã¾ã™ã€‚ åŸºèª¿è¬›æ¼” ã€ŒJavaScriptãƒ—ãƒã‚°ãƒ©ãƒžã®ãŸã‚ã®å…¨æ–¹ä½çš„å®Œå…¨æ¦è£…ã‚¬ã‚¤ãƒ‰ã€mala ãƒ¡ã‚¿ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã®å…‰ã¨é—‡ ã‚¤ãƒ³ãƒˆãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³ï¼šæŸ´ç”°æ·³ Perlï¼šç‰§å¤§è¼” Rubyï¼šè§’å¾å…¸ Pythonï¼šå°æ³‰å®ˆç¾© Haskellï¼šå±±æœ¬å’Œå½¦ Node.jsã¨ã¯ä½•ã ã£ãŸã®ã‹ ã‚¤ãƒ³ãƒˆãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³: ã€ŒNode.jsã¨ã¯ä½•ã ã£ãŸã®ã‹ï¼Ÿã€ç«¹è¿«è‰¯ç¯„ Perl: ã€ŒAnyEvent ã¨ Coro ã®å¾©ç¿’ã€ç«¹è¿«è‰¯ç¯„ JavaScript: ã€Œ10åˆ†ã§ã‚ã‹ã‚‹Node.jsã€æ¸…æ°´ä¿Šåš Python: ã€ŒTwistedã¨ã‹geventã¨ã‹ã€ãŠãŠãŸã« Ruby: ã€ŒEventMachineã¨ã¯ä½•ã ã£ãŸã®ã‹ã€ ãªã² ã€Œå¸¸è˜ã‚’è¦†ã™ã‚½ãƒ¼ãƒˆã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ Sleep sortã€ç«¹è¿«è‰¯ç¯„ ã€ŒNode.jsã§å¦ã¶ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã€ç«¹è¿«è‰¯ç¯„ JavaScriptå…«é¢å…
justoneplanet 2011/08/23
haskell

ECMAscript

programming

ruby

llplanets

javascript
ãƒªãƒ³ã‚¯
ES5 and use strict
My JavaScript book is out! Don't miss the opportunity to upgrade your beginner or average dev skills. Update There was another article about it which has less examples but more complementary points or descriptions. Moreover, that page links to a specific use strict compatibility page, right now green only with Firefox Aurora and Google Chrome Canary. However, another page shows more use strict cas
justoneplanet 2011/08/02
ECMAScript

ECMAScript 5

javascript

strict

use strict
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æ¬¡ä¸–ä»£JavaScriptã‚’â€œã„ã¾â€å®Ÿç¾ã™ã‚‹ã‚°ãƒ¼ã‚°ãƒ«ã®ã€ŒTraceurã€
ç¾åœ¨ä»•æ§˜ç–å®šä¸ã®æ¬¡ä¸–ä»£JavaScriptãŒå‚™ãˆã‚‹ã§ã‚ã‚ã†ã‚¯ãƒ©ã‚¹ã®ç¶™æ‰¿ã‚„ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«åŒ–æ©Ÿèƒ½ã‚’ã€ã„ã¾ã®JavaScriptã§å®Ÿç¾ã™ã‚‹ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã€ŒTraceurã€ã‚’ã‚°ãƒ¼ã‚°ãƒ«ãŒå…¬é–‹ã—ã¾ã—ãŸã€‚ traceur-compiler - Google's vehicle for Javascript Language Design Experimentation - Google Project Hosting Traceurã¯JavaScriptã§è¨˜è¿°ã•ã‚ŒãŸã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã¨ã—ã¦å®Ÿè£…ã•ã‚Œã¦ãŠã‚Šã€ã‚ªãƒ³ã‚¶ãƒ•ãƒ©ã‚¤ã§Traceurå¯¾å¿œJavaScriptã‚’ç¾åœ¨ã®JavaScriptã«å¤‰æ›ã€å®Ÿè¡Œã—ã¾ã™ã€‚ å…·ä½“çš„ã«ã¯ã€HTMLã®å…ˆé ã§ã€Œtraceur.jsã€ã‚’èªã¿è¾¼ã‚“ã§ãŠãã¨ã€ãã®Webã‚µã‚¤ãƒˆã§ã¯ãã‚Œä»¥å¾Œã€Traceurå¯¾å¿œã®ã‚¯ãƒ©ã‚¹ã‚„ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«åŒ–æ©Ÿèƒ½ã‚’å‚™ãˆãŸæ¬¡ä¸–ä»£JavaScriptã‚’ãã®ã¾ã¾å®Ÿè¡Œã§ãã‚‹ã€ã¨ã„ã†ã“ã¨ã«ãªã‚Š
justoneplanet 2011/05/09
javascript

ECMAscript

Traceur
ãƒªãƒ³ã‚¯
Restrict Mode
"use restrict"; // restrict mode for JavaScript Restrict mode for JavaScript (ECMAScript) is a proper subset of the language. Conform to it and enjoy more robust programs. The case for restrict mode (announcement) Discuss restrict mode in the JSShaper google group Try restrict mode directly in your browser Restrict mode is simple to learn. The rules are: === and !== are already strict by default,
justoneplanet 2011/04/02
JavaScript

æ¼”ç®—å

ECMAscript

Restrict mode
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use strict æ€–ã„ - hogehoge @teramako
Perlã®è©±ã§ã¯ãªã„ã€JavaScriptã®è©±ãªã®ã§ã‚ã‚‹ã€‚ ã‚ã¨ã€ã‚¿ã‚¤ãƒˆãƒ«ã¯ã¾ã‚“ã˜ã‚…ã†æ€–ã„çš„ãªæ„å‘³ãªã®ã§ã‚ã‚‹ ECMAScript 5 strict mode in Firefox 4 ? Mozilla Hacks ? the Web developer blog Firefox4.0b10pre ã« ECMAScript5 ã® Strict ãƒ¢ãƒ¼ãƒ‰ãŒå®Ÿè£…ã•ã‚Œã¾ã—ãŸãƒ¼ãƒ‘ãƒãƒ‘ãƒãƒ¼ ã§ã€è‡ªåˆ†ãŒã¯ã¾ã£ãŸç½ ã«ã¤ã„ã¦æ›¸ã„ã¦ãŠãã‚ˆã€‚ã¾ã‚ä¸Šè¨˜ãƒšãƒ¼ã‚¸ã«æ›¸ã‹ã‚Œã¦ã„ã‚‹ã“ã¨ãªã‚“ã ã‘ã©ãã€‚ "caller", "callee" in arguments ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆ ä½¿ã†ã¨ã‚¨ãƒ©ãƒ¼ (function() { "use strict"; return arguments.callee; })(); TypeError: 'caller', 'callee', and 'arguments' properties
justoneplanet 2011/02/02
strict

ECMAScript

javascript
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Harmony Of My Dreams â€“ Brendan Eich
Continuing in the vein of paren-free, Iâ€™d like to present a refreshed vision of JavaScript Harmony. This impressionist exercise is of course not canonical (not yet), but itâ€™s not some random, creepy fanfic either. Something like this could actually happen, likelier and better if done with your help (more on how at the end). Iâ€™m blurring the boundaries between Ecma TC39â€™s current consensus-Harmony,
justoneplanet 2011/01/28
JavaScript

ECMAScript

programming
ãƒªãƒ³ã‚¯
ECMAScript 5 strict mode in Firefox 4 â€“ Mozilla Hacks - the Web developer blog
Editorâ€™s note: This article is posted by Chris Heilmann but authored by Jeff Walden â€“ credit where credit is due. Developers in the Mozilla community have made major improvements to the JavaScript engine in Firefox 4. We have devoted much effort to improving performance, but weâ€™ve also worked on new features. We have particularly focused on ECMAScript 5, the latest update to the standard underlyin
justoneplanet 2011/01/26
ECMAscript

ECMAScript 5

JavaScript

strict
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John Resig - ECMAScript 5 Strict Mode, JSON, and More
Previously I analyzed ECMAScript 5â€™s Object and Property system. This is a huge new aspect of the language and deserved its special consideration. There are a number of other new features and APIs that need attention, as well. The largest of which are Strict Mode and native JSON support. Strict Mode is a new feature in ECMAScript 5 that allows you to place a program, or a function, in a â€œstrictâ€ o
justoneplanet 2011/01/26
ECMAscript

ECMAScript 5

strict

javascript
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DeNA Technology Seminar #2 ã®ã‚¹ãƒ©ã‚¤ãƒ‰åŠã³å‹•ç”»ã‚’å…¬é–‹ã—ã¾ã™ | BLOG - DeNA Engineering
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justoneplanet 2011/01/16
DeNA

javascript

html5

ECMAscript

canvas

game
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ECMAScript 5ãƒªãƒªãƒ¼ã‚¹
åŽŸæ–‡(æŠ•ç¨¿æ—¥ï¼š2009/12/09)ã¸ã®ãƒªãƒ³ã‚¯ ECMAScript 5ã®ä»•æ§˜ãŒãŒä»Šé€±ã€ãƒªãƒªãƒ¼ã‚¹ã•ã‚ŒãŸ(pdf)ã€‚ECMAScriptã¯ä¸€èˆ¬çš„ã«ã¯JavaScriptâ„¢ã¨ã—ã¦çŸ¥ã‚‰ã‚Œã¦ã„ã‚‹ã€‚æœ€æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã¯ã€åŸºæœ¬ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«æ”¹å–„ãŒåŠ ãˆã‚‰ã‚Œã¦ã„ã‚‹ä¸€æ–¹ã€ä¸€èˆ¬çš„ã§ã‚ã‚ŠãŒã¡ãªã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ãƒŸã‚¹ã‚’ç‰¹å®šã—ã€é™¤åŽ»ã™ã‚‹ãŸã‚ã«ã‚ˆã‚ŠåŽ³æ ¼ãªãƒ©ãƒ³ã‚¿ã‚¤ãƒ ãƒ¢ãƒ¼ãƒ‰ãŒå°Žå…¥ã•ã‚ŒãŸã€‚ ECMAScript 4ã‚’åˆç†åŒ–ã—ã‚ˆã†ã¨ã„ã†åˆæœŸã®è©¦ã¿ã¯å¤§å¤±æ•—ã«çµ‚ã‚ã£ãŸã€‚çµå±€ã€Adobeç¤¾ã®ActionScriptã ã‘ãŒææ¡ˆã•ã‚ŒãŸå¤‰æ›´ç‚¹ã«å¯¾å¿œã—ãŸã ã‘ã ã£ãŸã€‚ECMAã¯ãƒãƒ¼ã‚¸ãƒ§ãƒ³4ã®ä»•æ§˜ã‚‚ãƒªãƒªãƒ¼ã‚¹ã§ããªã‹ã£ãŸã€‚ãƒãƒ¼ã‚¸ãƒ§ãƒ³4ã®ä»•æ§˜ã§ã¯ã€æ§˜ã€…ãªã‚°ãƒ«ãƒ¼ãƒ—ã®å®Ÿè£…ã«æ‚ªå½±éŸ¿ã‚’ä¸Žãˆã¦ã—ã¾ã†ã‹ã‚‰ã ã€‚ã¾ãŸã€ãã®ã‚ˆã†ãªå•é¡ŒãŒã‚ã‚‹é™ã‚Šã€ãƒ–ãƒ©ã‚¦ã‚¶ã‚‚ã‚µãƒãƒ¼ãƒˆã§ããªã„ã€‚ ã“ã“æ•°å¹´ã«ã‚ãŸã£ã¦ã€JavaScriptã®ã‚¨ãƒ³ã‚¸ãƒ³ã«å¤§è¦æ¨¡ãªæ”¹å–„ãŒåŠ ãˆã‚‰ã‚ŒãŸã€‚ä¾‹ãˆã°ã€Nitroã‚„T
justoneplanet 2010/12/24
ECMAScript 5

javascript

ECMAscript
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justoneplanet 2010/11/16
ecma

javascript

ecmascript

os0x
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