Integrated Terminal Performance Improvements
October 3, 2017 Daniel Imms, @Tyriar The rendering engine of the Integrated Terminal has been completely re-written with performance in mind for the upcoming version 1.17 of Visual Studio Code. In this version, we move away from a DOM-based rendering system to using the HTML canvas element. DOM Rendering It's somewhat surprising, but rendering an interactive terminal was possible in a system desig
NodeList object is finally an Iterable
Can’t be more excited about the new feature currently available in Chrome Beta (currently 51), which is nothing else but the built-in support for NodeList iteration 🎉 It might be so obvious for people coming from outside the web world that whenever you select a list of UI elements, let’s say this one: and you want to do some action on each of them, you might expect something like this: to output
What is the DOM? | CSS-Tricks
Get affordable and hassle-free WordPress hosting plans with Cloudways — start your free trial today. A reader recently wrote in asking me what the DOM was. They said they’ve heard it mentioned and alluded to, but aren’t sure they really understand it. We can fix that. But the HTML you write is parsed by the browser and turned into the DOM. View Source just shows you the HTML that makes up that pag
JavaScriptã®DOM Core基礎 - 三ç‰å…µ
Coreã®ç°¡æ˜“リファレンス。Coreã¯è¦ç´ ã‚’å‚ç…§ã—ãŸã‚Šã€ç›¸å¯¾ä½ç½®ã‹ã‚‰å‘¨ã‚Šã®ãƒŽãƒ¼ãƒ‰ã‚’å‚ç…§ã—ãŸã‚Šã€è¦ç´ を生æˆã™ã‚‹ã¨ã„ã£ãŸéƒ¨åˆ†ã€‚主ã«åˆ©ç”¨ã™ã‚‹ã§ã‚ã‚ã†ãƒ—ãƒãƒ‘ティやメソッドã¯ã‚«ãƒãƒ¼ã—ã¦ã„ã‚‹ã¤ã‚‚ã‚Šã§ã™ã‘ã©ã€ã“れも入れã¨ã‘ã£ã¦ã®ã‚ã£ãŸã‚‰æ•™ãˆã¦ãã ã•ã„。 ã“ã®ã‚ãŸã‚Šã¯åœ°å‘³ã§ä½¿ã„ã¥ã‚‰ããã®ä¸Šç†è§£ã—ã«ãã„ã¨ã„ã†æ®‹å¿µãªéƒ¨åˆ†ã€‚ãµã¨å¿˜ã‚ŒãŸã¨ãã«ä½¿ã†å€‹äººçš„ãªã‚‚ã®ã§ã™ãŒã€æ…¢æ€§jQuery拒絶症候群ãªäººã‚ˆã‹ã£ãŸã‚‰ã©ã†ãžã€‚ãã‚Œã«ã—ã¦ã‚‚æš‘ã„。ガリガリå›ãŠã„ã—ã„ã。 DOMã¨ã¯ã€‚ Document Object Model (DOM) ã¯ã€HTML ãŠã‚ˆã³ XML ドã‚ュメントã®ãŸã‚ã® API ã§ã™ã€‚ã“ã‚Œã¯ãƒ‰ã‚ュメントã®æ§‹é€ çš„ãªè¡¨ç¾ã‚’æä¾›ã—ã€å†…容や表示形態ã®å¤‰æ›´ã‚’å¯èƒ½ã«ã—ã¾ã™ã€‚端的ã«è¨€ãˆã°ã€Web ページをスクリプトやプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã¨ã¤ãªãよã†ãªæ©Ÿæ§‹ã§ã™ã€‚ https://developer.mozilla.org/ja/
HTMLDocument ã®å‹•çš„ãªä½œæˆ: Days on the Moon
ブラウザ上ã§ã€JavaScript を使ã£ã¦ HTML ã®ã‚½ãƒ¼ã‚¹ã‹ã‚‰ HTML 文書を生æˆã™ã‚‹ã®ã«ã€ã©ã‚“ãªæ–¹æ³•ãŒã‚ã‚‹ã®ã‹èª¿ã¹ã¾ã—ãŸã€‚ãªãŠã€ä»¥ä¸‹ã®ã‚¹ã‚¯ãƒªãƒ—ト㯠HTML 文書上ã§å®Ÿè¡Œã™ã‚‹ã“ã¨ãŒå‰æã§ã™ã€‚ 表ã®è¦‹æ–¹ XSLT ã® HTML 出力 createHTMLDocument メソッド createDocument メソッド createDocument メソッドã¨åå‰ç©ºé–“ã®æŒ‡å®š createDocument メソッドã¨æ–‡æ›¸åž‹å®£è¨€ã®æŒ‡å®š createDocument メソッドã¨æ–‡æ›¸åž‹å®£è¨€åŠã³åå‰ç©ºé–“ã®æŒ‡å®š cloneNode メソッド iframe è¦ç´ ActiveXObject CID ã‹ã‚‰ã®ä½œæˆ ã¾ã¨ã‚ 表ã®è¦‹æ–¹ 以下ã®è¡¨ã«ãŠã„ã¦ã€å„é …ç›®ã®æ„味ã¯æ¬¡ã®é€šã‚Šã§ã™ã€‚ doc HTML 文書を作æˆã§ãã‚Œã°â—‹ã€XML 文書を作æˆã§ãã‚Œã°â–³ã€ãれ以外ãªã‚‰Ã—ã§ã™ã€‚HTML 文書ã‹ã©ã†ã‹ã¯ã€cre
James Mc Parlane's Blog - IE, Closures, Leaks
[UPDATE] I have updated this with information gleaned from http://jibbering.com/faq/faq_notes/closures.html on the true nature of closures and performed an experiment. Its worse than I thought. The 'shotgun' nature of scope closure in JavaScript means that its very easy to write leaky code. One of the problems with JavaScript is that you can make an effective closure over objects that are not expl
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Internet Explorer リーク パターンをç†è§£ã—ã¦è§£æ±ºã™ã‚‹
Justin Rogers Microsoft Corporation June 2005 日本語版最終更新日 2006 å¹´ 2 月 3 æ—¥ Web 開発者ã®é€²åŒ– 以å‰ã¯ã€ãƒ¡ãƒ¢ãƒª リーク㯠Web 開発者ã«ã¨ã£ã¦å¤§ããªå•é¡Œã§ã¯ã‚ã‚Šã¾ã›ã‚“ã§ã—ãŸã€‚ページã¯æ¯”較的å˜ç´”ã«ä¿ãŸã‚Œã€ã‚µã‚¤ãƒˆå†…ã®ç•°ãªã‚‹ãƒã‚±ãƒ¼ã‚·ãƒ§ãƒ³é–“ã®ãƒŠãƒ“ゲーションã¯è§£æ”¾ã•ã‚ŒãŸãƒ¡ãƒ¢ãƒªã‚’クリーンアップã™ã‚‹ã†ãˆã§å„ªã‚ŒãŸæ–¹æ³•ã§ã—ãŸã€‚リークãŒã‚ã£ãŸå ´åˆã‚‚ã€ãŸã„ã¦ã„ã¯æ°—付ã‹ãªã„ã»ã©å°ã•ãªã‚‚ã®ã§ã—ãŸã€‚ æ–°ã—ã„ Web アプリケーションã¯ã€ã‚ˆã‚Šé«˜ã„標準ã«å¾“ã„ã¾ã™ã€‚ページã¯ãƒŠãƒ“ゲートã•ã‚Œãšã«ä½•æ™‚間も実行ã•ã‚Œã€Web サービスを通ã˜ã¦æ›´æ–°æƒ…å ±ã‚’å‹•çš„ã«å–å¾—ã™ã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ã€‚複åˆã‚¤ãƒ™ãƒ³ãƒˆ スã‚ームã€ã‚ªãƒ–ジェクト指å‘ã® JScriptã€ãŠã‚ˆã³ã‚¢ãƒ—リケーション全体を生æˆã™ã‚‹ãŸã‚ã®ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã‚’組ã¿åˆã‚ã›ã‚‹ã“ã¨ã§ã€è¨€èªžæ©Ÿèƒ½ãŒé™ç•Œç‚¹ã«é”ã—ã¾ã™ã€‚ã“れらã®å¤‰æ›´ãŠã‚ˆã³ãã®ä»–
IT戦記 - 一行㧠IE ã® JavaScript を高速化ã™ã‚‹æ–¹æ³•
以下ã®ä¸€è¡Œã‚’ã™ã¹ã¦ã® JavaScript ã®å‰ã«èªã¿è¾¼ã‚€ /*@cc_on _d=document;eval('var document=_d')@*/ ã“ã®ä¸€è¡Œã‚’èªã¿è¾¼ã‚€ã“ã¨ã«ã‚ˆã£ã¦ IE ã§ã® document ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ãŒ 5 å€é€Ÿããªã‚Šã¾ã™ã€‚ ãŸã¨ãˆã° 以下ã®ã‚ˆã†ã«ã€èªã¿è¾¼ã‚€å‰ã¨èªã¿è¾¼ã‚“ã 後を比較ã—ã¦ã¿ã¾ã™ã€‚ // Before var date = new Date; for (var i = 0; i < 100000; i++) document; alert(new Date - date); // 643 /*@cc_on _d=document;eval('var document=_d')@*/ // After date = new Date; for (var i = 0; i < 100000; i++) document; alert(new Date -
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ブラウザã”ã¨ã«ç•°ãªã‚‹ãƒ‰ã‚ュメントツリー ã“ã‚Œã¾ã§Firefoxを使ã£ã¦ã€ã‚µãƒ³ãƒ—ルHTMLã®ãƒ‰ã‚ュメントツリーを見ã¦ãã¾ã—ãŸãŒã€æ®‹å¿µãªãŒã‚‰ã€ã™ã¹ã¦ã®ãƒ–ラウザãŒã¾ã£ãŸãåŒã˜ãƒ‰ã‚ュメントツリーを構æˆã™ã‚‹ã‚ã‘ã§ã¯ã‚ã‚Šã¾ã›ã‚“。Firefoxã€Operaã€Safariã§ã‚‚ã€ãƒ›ãƒ¯ã‚¤ãƒˆã‚¹ãƒšãƒ¼ã‚¹ã®æ‰±ã„ã«ã¤ã„ã¦ã¯å¾®å¦™ãªé•ã„ãŒã‚ã‚Šã¾ã™ã€‚ã¾ãŸã€Internet Explorer6ã€7ã«ã„ãŸã£ã¦ã¯ã€ãƒ›ãƒ¯ã‚¤ãƒˆã‚¹ãƒšãƒ¼ã‚¹ãƒŽãƒ¼ãƒ‰ã¯ç„¡è¦–ã•ã‚Œã€ãƒ‰ã‚ュメントツリー上ã«ç¾ã‚Œã¾ã›ã‚“。ã“ã®ã‚ˆã†ã«ã€ãƒ–ラウザã«ã‚ˆã£ã¦ãƒ›ãƒ¯ã‚¤ãƒˆã‚¹ãƒšãƒ¼ã‚¹ãƒŽãƒ¼ãƒ‰ã®æ‰±ã„ãŒé•ã†ã¨ã„ã†ã“ã¨ã¯ã€DOMスクリプティングã«ãŠã„ã¦ã¯éžå¸¸ã«ã‚„ã£ã‹ã„ãªç¾è±¡ã¨ã„ãˆã¾ã™ã€‚ã“ã“ã§ã¯å…·ä½“çš„ã«ã€ãƒ–ラウザã”ã¨ã«ã©ã®ã‚ˆã†ãªãƒ‰ã‚ュメントツリーを構æˆã™ã‚‹ã®ã‹ã‚’見ã¦ã„ãã¾ã—ょã†ã€‚ Internet Explorer 6ã€7ã®å ´åˆ Internet Explorerã¯å›³ã®é€šã‚Šã§ã™ï¼ˆå›³2）。
jmblog.jp - preventDefault() 㨠stopPropagation()
先日公開ã—ãŸã€ŒæŠ•ç¨¿ã‚¹ãƒ©ãƒƒã‚°ï¼ˆPost slug）ãŒç©ºç™½ãªã‚‰è¦å‘Šã—ã¦ãれるWordPress用Greasemonkeyスクリプトã€ã‚’開発ã—ã¦ã„ã‚‹ã¨ãã«ã€JavaScriptã§ã®ã‚¤ãƒ™ãƒ³ãƒˆã®ã‚ャンセルã¾ã‚ã‚Šã§è¦‹äº‹ã«ãƒãƒžã£ã¦ã—ã¾ã„ã¾ã—ãŸã€‚ãã®ã¨ãã«èª¿ã¹ã¦ã‚ã‹ã£ãŸã“ã¨ã‚’ã¾ã¨ã‚ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚（間é•ã„ãŒã‚ã‚Œã°æ˜¯éžã”指摘ãã ã•ã„ï¼ï¼‰ ã‚„ã‚ŠãŸã‹ã£ãŸã“㨠WordPressã®æŠ•ç¨¿ç”»é¢ã§ã€Œå…¬é–‹ï¼ˆPublish）ã€ãƒœã‚¿ãƒ³ã‚’クリックã—ãŸã¨ãã«ã€ã€ŒæŠ•ç¨¿ã‚¹ãƒ©ãƒƒã‚°ï¼ˆPost slug）ã€ã®ãƒ†ã‚ストボックスã«å€¤ãŒå…¥ã£ã¦ã„ãªã‘ã‚Œã°ã€ç¢ºèªãƒ€ã‚¤ã‚¢ãƒã‚°ã‚’出ã™ã€‚ãã“ã§ã€Œã‚ャンセルã€ãƒœã‚¿ãƒ³ãŒæŠ¼ã•ã‚ŒãŸã‚‰ã€ãƒ•ã‚©ãƒ¼ãƒ ã® submit ã‚’ä¸æ¢ã™ã‚‹ã€‚ 最åˆã«æ€ã„ã¤ã„ãŸæ–¹æ³• ã¾ãšé ã«æµ®ã‹ã‚“ã ã®ã¯ã€submit ボタンã«å¯¾ã—㦠HTML ã§ã‚¤ãƒ™ãƒ³ãƒˆãƒãƒ³ãƒ‰ãƒ©ã‚’記述ã™ã‚‹ã¨ã„ã†ã€ã¨ã¦ã‚‚å¤å…¸çš„ãªæ–¹æ³•ã§ã—ãŸã€‚
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GitHub - github/query-selector: Query the document tree by selector, filtering by element type.
Experimentation Harness
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