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The console object crops up everywhere. But what is it, and what can it do? Most people seem to use it without realising the sheer convenience it can provide. Let’s take a look at where it comes from, and how to use it correctly. Built-in vs. Host The console object is what’s known as a host object in ECMAScript. Host objects are supplied by the host environment. Node’s documentation refers to con
Notable features Support of the Zip64 format Support of WinZIP AES and PKWare ZipCrypto encryption Support of simultaneous reads and writes to one or more zip files Integrated worker pool manager No third-party dependencies This library depends on the Promise, the TypedArray, the Streams APIs and these ones optionally: Web Workers Compression Streams Web Crypto Compatibility This library works ful
Backbone.js (annotated source code) のソースコードを読んだ。単なる趣味です。全体的に読みやすくて読んでて楽しかった。他人が読んで役に立つものでもないので、そういうのをお探しの方は Backbone.js Advent Calendar 2011 あたりをどうぞ。以下、読んで書いたブログ記事へのリンク集です。 Backbone.Events Backbone.Events (2) Backbone.Model Backbone.Collection Backbone.Router Backbone.History Backbone.View Backbone.sync Backbone.js Helpers 他
If you are a web developer, you surely must know how handy it is to dynamically change the class attribute on an element. The benefits this technique are quite a few: You leave any changes in the look and feel to the CSS You avoid having to loop lots of elements as you can allow CSS to do that job for you by assigning a class on a parent element You can trigger CSS transitions and avoid having to
当初の期待としては、CoffeeScriptをコンパイルしたJavaScriptにSourceMapで元のCoffeeScriptヒモ付てそのままデバッグ出来るようになんないのかなー??て思ったんだけどなんか無理そうでした(結論)。 で、調査しはじめてみたんだけど全然情報なくてビビった。 CSS Selector Profiler, Source Mapping and Software Rendering « Peter Beverloo に情報がだいぶまとまってて超助かりました。 なんかWebKitの中の人なんじゃないのレベルで色々書かれててびっくりします。 Source Map Revision 3 Proposal - Google ドキュメント をざらーっと眺めてみたところで、JavaScript以外の言語にはなんか対応してなさそうだなーっていうのが分かってがっくり。字句解析した
Node’s module system is deceptively clever. On the surface it seems like it provides just enough functionality to get by, but it can go a long way towards helping to structure an application elegantly. Node’s official documentation covers all of the major features, yet many modules sent in for review at DailyJS don’t use these techniques where they could. For this article I’ll be using Express app
Firefox 10 は 01/31 のリリースに向けて開発が進められています。可能な限り互換性を維持するよう開発されていますが、他のブラウザとの相互運用性や最新 Web 標準仕様への準拠のため、後方互換性に関わる修正も含まれます。そのような修正点をまとめましたので、動作検証時などにご参照ください。 ここでは後方互換性に影響し得る修正のみ解説します。その他の新機能や変更点については次のページをご覧ください: ユーザ向けも含めた新機能: Firefox 10 の主な新機能を紹介します 開発者向けの新機能や変更点: Firefox 10 for developers UserAgent 文字列のバージョン番号が 2 桁になります Firefox 10 は初めてメジャーバージョン番号が 2 桁になる Firefox です。UserAgent 文字列でブラウザ判別を行っており、そのスクリプトのバー
It's an exciting milestone day for Kendo UI today! We just released the public beta for Kendo UI Mobile, the third piece of the Kendo UI story (joining already released Kendo UI Web and Kendo UI DataViz). We know a lot of you are very excited about doing mobile development with HTML5, so we're stoked to deliver this beta and get your feedback. If you don't need to know anything else, go download t
THE CULMINATION BACKBONECONF III DEC 15 & 16, 2014 - CAMBRIDGE, MA ABOUT THE EVENT BackboneConf is conference about building applications on the web, with a focus on the Backbone.js library. BackboneConf III will be an informative but laid-back two days at the Kendall Square Cinema, featuring 18 speakers from around the web (and the world), along with all trappings of being at the movies: unlimite
A recent project has us using spine.js as well as a few other JavaScript libraries. Though spine.js comes with its own routing, it conflicts with pjax. The solution was to roll our own. The requirements are simple, we should be able to give it a set of routes and their corresponding callbacks and we should be able to process the browsers url upon request. The CoffeeScript for that looks like this:
Resumable.js is a JavaScript library providing multiple simultaneous, stable and resumable uploads via the HTML5 File API. The library is designed to introduce fault-tolerance into the upload of large files through HTTP. This is done by splitting each file into small chunks. Then, whenever the upload of a chunk fails, uploading is retried until the procedure completes. This allows uploads to autom
Badass JavaScriptA showcase of awesome JavaScript that pushes the boundaries of what's possible on the web, by @devongovett. Mike Kamermans has been working on a little font toolkit for your JavaScript that is kind of akin to the built-in Image object but for Fonts. It gives you font loading events using a technique perfected in Mozilla’s pdf.js project, metrics information, and a better version
This is an archived page. It's not actively maintained. ECMAScript 2015 is the sixth edition of the ECMAScript Language Specification standard. It defines the standard for the JavaScript implementation in SpiderMonkey, the engine used in Firefox and other Mozilla applications. Code-named "ES.next", "Harmony", or "ECMAScript 6", the first working draft (based on ECMAScript 5.1) was published on Jul
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