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uupaa looper 見ã£ã‘ãŸã‚ˆãƒ¼ - latest log
(ε・◇・)з hasOwnProperty を使ã£ãŸ for in ループより 20%～84% 低コストãªã€ã†ãƒ¼ã±ãƒ¼å¼ ループã®ã”紹介ã よ～ Object.keys を使ã„ã€key を列挙ã™ã‚‹ã“ã¨ã§ã€hasOwnProperty を使ã£ãŸ for in ループよりも速ããªã‚Šã¾ã™ã€‚ var keys = Object.keys(obj), i = 0, iz = keys.length; for (; i < iz; ++i) { var key = keys[i]; var value = obj[key]; ... ベンãƒãƒžãƒ¼ã‚¯ http://jsperf.com/perf-for-in-loop-vs-pre-enum-keys-for-loop/8 Browser for_in_hasOwnProperty loop uupaa-looper Chrome 16.0.912.77
[iOS]第1回 JavaScript実行開発環境MyScriptsã®é…力を全力ã§ä¼ãˆã¦ã¿ã‚‹
MyScriptsã®åŸºæœ¬ MyScriptsã¯ã€è¤‡æ•°ã®ã‚¨ãƒ³ãƒˆãƒªã‚’登録ã€ç®¡ç†å¯èƒ½ãªã‚¨ãƒ‡ã‚£ã‚¿ã«ã€JavaScript実行機能ãŒä»˜ã„ãŸã‚¢ãƒ—リã¨ã„ãˆã¾ã™ã€‚ JavaScriptエンジンã«ã¯ã€UIWebViewを使ã£ã¦ã„ã¾ã™ã€‚ UIWebViewã¯MyScripts起動時ã«åˆæœŸåŒ–ã•ã‚Œã€MyScriptsãŒçµ‚了ã•ã‚Œã‚‹ã¾ã§ç¶æŒã•ã‚Œã¾ã™ã€‚ ã“ã‚Œã¯ã€XMLHttpRequestã®å®‰å®šçš„動作ã®ãŸã‚ã®ä»•æ§˜ã§ã™ã€‚ 従ã£ã¦ã€ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã€ã‚°ãƒãƒ¼ãƒãƒ«é–¢æ•°ã¯å–り扱ã„ã«æ³¨æ„ãŒå¿…è¦ã§ã™ã€‚ 変数ã¯éƒ½åº¦varã§å®£è¨€ã—ç›´ã—ãŸæ–¹ãŒã„ã„ã§ã—ょã†ã€‚（続ãã¯[Read More]ã‹ã‚‰ï¼‰ MyScriptsã®ç‰¹å¾´: 入力ã¨å‡ºåŠ› MyScriptsã®ç‰¹å¾´ã¨ã—ã¦æœ€åˆã«æŒ™ã’られるã®ã¯ã€å…¥åŠ›ã¨å‡ºåŠ›ã§ã™ã€‚ iOS用ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã¯ãŸãã•ã‚“ã‚ã‚Šã¾ã™ãŒã€ã‚¢ãƒ—リã®å¤–ã®ä¸–ç•Œã¨ã®é€£æºãŒè€ƒæ…®ã•ã‚ŒãŸã‚‚ã®ã¯ä¸€ã¤ã¨ã—ã¦ã‚ã‚Šã¾ã›ã‚“。 MyScriptsã¯ã€ã‚¯ãƒª
uncurryThis 関数 - hogehoge @teramako
http://wiki.ecmascript.org/doku.php?id=conventions:safe_meta_programming ã«ã¦å¤§å¤‰æœ‰ç”¨ãªæ›¸ã方を身ã«ç€ã‘ãŸã€‚ Function.prototype.bindã¨Function.prototype.callã®é»’é”è¡“çš„ãªã‚‚ã®ã€‚ obj.hasOwnProperty("prop"); ã¨æ›¸ãã¨ã“ã‚ã‚’callã§æ›¸ã㨠var func = Object.prototype.hasOwnProperty; func.call(obj, "prop"); ã¨æ›¸ã‘る。ã•ã‚‰ã«callã‚’bindã—ã¦ã¿ã‚‹ã¨ var func2 = func.call.bind(func); func2(obj, "prop"); ã¨ãªã‚‹ã€‚ã•ã‚‰ã«ã€bindã‚’bindã™ã‚‹ã¨ var func3 = func.bind.bind(func.call)(func
:visitedセレクタを使ã‚ãªã„閲覧履æ´ã®æŠ½å‡ºæ–¹ - karasuyamatenguã®æ—¥è¨˜
ã“ã®ã‚¿ã‚¤ãƒˆãƒ«è¦‹ã‚‹ã¨æŠ½è±¡çš„ã§ãƒ”ンã¨ã“ãªã„ãŒã“れを見ã¦ã»ã—ã„： ã“れ見ãŸã¨ãã¯ãƒ“ビã£ãŸã€‚全部的ä¸ã€‚ ã“ã‚Œã¯ãŸã£ãŸ30è¡Œã®JavaScriptã§å®Ÿè£…ã•ã‚Œã¦ã„る。 http://oxplot.github.com/visipisi/visipisi.html ã“ã®ãƒªãƒ³ã‚¯å…ˆã®ãƒšãƒ¼ã‚¸ã®ä¸‹ã®ã€ŒDo the magicã€ã¨ã„ã†ãƒœã‚¿ãƒ³ã‚’押ã™ã¨è‡ªåˆ†ã®å±¥æ´ãŒè¦‹ã‚Œã‚‹ã€‚ å„サイトã®ç”»åƒãŒãƒ–ラウザã«ã‚ャッシュã•ã‚Œã¦ã„ã‚‹ã‹ã©ã†ã‹ã‚’ãƒãƒ¼ãƒ‰æ‰€è¦æ™‚é–“ã‹ã‚‰æŽ¨æ¸¬ã—ã¦ã„る。 :visitedセレクタã«ã‚ˆã‚‹è¨ªå•å±¥æ´æ¼ã‚Œã¯ãƒ–ラウザベンダーãŒå¯¾å¿œã—ã¦ã„るよã†ã ã‘ã©ã€ç”»åƒã®ãƒãƒ¼ãƒ‰ã‚¹ãƒ”ードã¯ãƒ¦ãƒ¼ã‚¶ã®ä½“感スピードをæã‚ãšã«éš ã™ã“ã¨ã¯ã§ããªã„よã†ãªæ°—ãŒã™ã‚‹ã€‚ç”»é¢ã«ã¯ç´ æ—©ã見ã›ã¦ã€JavaScriptã®APIã«ã¯ã‚†ã£ãり見ã›ã‚‹ãªã‚“ã¦ã“ã¨ã—ãŸã‚‰ã€ä½•ãŒå£Šã‚Œã‚‹ã‹ã‚ã‹ã‚‰ãªã„ã—。 ã‚‚ã—ã‹ã—ã¦ãƒ–ラウザã®è¨ªå•å±¥æ´æ¼ã‚Œã®é˜»æ¢ã£ã¦ã®ã¯ä¸å¯èƒ½ãªã®ã‹ã‚‚ã—ã‚Œãªã„。
Lawnchair
Sorta like a couch except smaller and outside, also, a client side JSON document store. Perfect for webkit mobile apps that need a lightweight, simple and elegant persistence solution. Features micro tiny storage without the nasty SQL: pure and delicious JSON clean and simple oo design with one db table per store key/value store.. specifying a key is optional happily and handily will treat your st
Native Fullscreen JavaScript API (plus jQuery plugin) - John Dyer
HTML5 <video> is great, but when it was first released, one of the big complaints was that it couldn’t do true FullScreen like Flash. Thankfully, this is changing and native FullScreen support is coming to most browsers in the next few months (no word from the Internet Explorer team Update on IE below #5)) The API is still heavily in flux especially since the W3C joined in this week. I spent some
List.js
List.js v2.3.1 Tiny, invisible and simple, yet powerful and incredibly fast vanilla JavaScript that adds search, sort, filters and flexibility to plain HTML lists, tables, or anything. Hi! I'm Jonny and the author of List.js. I hope you like the lib. I’ve put a lot of hours into it! Feel free to follow me on Twitter and GitHub for news and donate a coffee for good karma ;) Follow @javve Donate a c
Music SoftSynth
README.md Music SoftSynth On September 26, 2011 Viznut released the Experimental music from very short C programs video on Youtube. Soon people started playing with various formulas and building tools to test them. The time has come for this project and 140byt.es to have a tiny baby. Behold the 140bytes Music SoftSynth in JavaScript! See more information and a live demo of the 140bytes Music SoftS
140bytes Music SoftSynth | www.p01.org
releases 140bytes Music SoftSynth 13 October 2011 140bytes softsynth music sound javascript audio HTML5 This year has kept people busy crafting little things. It started on May 23, 2011 when Jed Schmidt created the 140byt.es master GIST thus throwing the ball for a tweet-sized, fork-to-play, community-curated collection of JavaScript. Later, on September 26, 2011 Viznut released the Experimental m
jQuery Mobileã§ã®ã‚¢ãƒ—リケーション開発ã«Backbone.jsã‚’å°Žå…¥ã—よㆠ| Lab by [email protected]
ã“ã‚“ã«ã¡ã¯ã€2011年度新å’エンジニアã®å¤ç›®ã§ã™ï¼çªç„¶ã§ã™ãŒã¿ãªã•ã‚“JavaScript書ã„ã¦ã¾ã™ã‹ï¼Ÿ 最近ã¯jQuery Mobileãªã©ã‚’利用ã—ãŸã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³å‘ã‘アプリ開発ã«ãŠã„ã¦ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚µã‚¤ãƒ‰ã§ã‚‚ヘビーãªJavaScriptã®ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã‚’ã™ã‚‹æ©Ÿä¼šãŒã‚ã‚‹ã¨æ€ã„ã¾ã™ã€‚ãã®ã‚ˆã†ãªã¨ãコードã®ã„ãŸã‚‹ã¨ã“ã‚ã«HTMLãŒæ··å…¥ã—ãŸã‚Šã€ã©ã“ã§ã©ã®ãƒ‡ãƒ¼ã‚¿ã‚’扱ã£ã¦ã„ã‚‹ã®ã‹åˆ†ã‹ã‚‰ãªããªã‚‹ã¨ã„ã†ã“ã¨ã«ãªã‚ŠãŒã¡ã§ã™ã€‚ 今回ã¯ãã‚“ãªæ‚ªå¤¢ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ç”Ÿæ´»ã«ä¸€ç‹ã®å¸Œæœ›ã®å…‰ã‚’照らã™Backbone.jsを紹介ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ 対象èªè€… JavaScriptã§ã®é–‹ç™ºçµŒé¨“ãŒã‚ã‚‹æ–¹ Backbone.jsã¨ã¯ Backbone.jsã¯DocumentCloudãŒé–‹ç™ºã‚’ã—ã¦ã„ã‚‹ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚µã‚¤ãƒ‰ã®JavaScriptコードをModelã€Viewã€Controllerã§æ§‹ç¯‰ã™ã‚‹ãŸã‚ã®ãƒ•ãƒ¬ãƒ¼ãƒ ワークã§ã™ã€‚b
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