Post by @0-9Object.prototype.__defineSetter__を使ったAndroidでのJSON Hijackingに関して こないだShibuya.XSSで徳丸さんが紹介されてたObject.prototype.__defineSetter__を使ったJSON Hijackingに関して「Fx3系とAndroid 2系で動作する」とのことだったので検証してみた。
jsでTDD！MochaとChaiとsinon.js入門 - lxyuma BLOG
※この記事は社内勉強会向けの資料の下書きです。書きなぐりの下書きで見直すと最後の方の文書がヤバいので、いつか書き直します。読み辛い所は申し訳ないです。 概要 TDD テスト自動化とTDDを整理 TDDとBDDの違い Test Framework in javascript QUnit/jasmine/mochaについて、違いやメリデメを知る mocha 基本的な書き方 アサーションライブラリのメリデメを整理する chai 記述形式の違い整理 基本文法 sinonjs spy stubs mock TDD Test Driven Development テスト駆動開発 by ケントベック 特徴 xUnit系/BDD系のテストフレームワーク使う テストするコードも実装 テストファースト 実装の後にテストするのではなく、テストを先に書いて実装する サイクル Red(失敗) => Green(通過
HTML FormにPUT/DELTEは必要なのか、あるいはJSer界の分断 #桜JS - teppeis blog
先日、都内某所で開催された#桜JSに参加したので、個人の日記レベルの感想を書いてみる。 #桜JS - Togetterまとめ 桜JSでご飯を食べながらLT大会をした | Web scratch 細かいことはazuさんのまとめを見てもらうとして、個人的におもしろかったのがHTML FormのPUT/DELETEについての議論。 なぜ html の form は PUT / DELETE をサポートしないのか？ - Block Rockin’ Codes Jxckさんの経緯まとめを踏まえて、じゃあこれからHTML FormにPUT/DELETEを追加する必要あるの？っていう点で意見が割れた。 個人的には、この話を聞いたとき、確かに仕様としては欠けてる感じがするけど、いまさら実装されても自分はForm PUT/DELETE使うことはないだろうなと思っていた。理由は、FormでPUT/DELETE
HTML Imports: Discussion over Async/Progressive Loading
gistfile1.md HTML Imports: Discussion over Async/Progressive Loading There are concerns around HTML Imports that does sync or blocking loading as the default. I’d like to address these concerns. Especially I’d like to understand the actual use cases that “sync” loading hurts. This document aims to be a portal of that effort. What to Block Before discussing use cases, let’s clarify which part of pa
Release JSHint 2.5.0 · jshint/jshint
Yesterday, we pushed a new version of JSHint. We decided to label it 2.5.0 because—while it's backwards compatible—there are a few major changes. The following options were removed: nomen, onevar, passfail, white, gcl, smarttabs, trailing. In addition to that, indent no longer provides warnings about indentation levels. You can still use it to set your tab-width but it will be used only for charac
Why CoffeeScript Isn't the Answer
CoffeeScript is an open source project that provides a new syntax for JavaScript. I have to say that I have a lot of respect for CoffeeScript and it got a lot of things right. The “golden rule” of CoffeeScript is “It’s just JavaScript”. That means there is a straightforward equivalent to every line of CoffeeScript. Consequently, there aren’t as many issues with JavaScript interop as there are with
Writing Fast JavaScript For Games & Interactive Applications
Recent versions of JavaScript engines are designed to execute large bodies of code very fast but if you don't know how JavaScript engines work internally you could easily degrade your application's performance. It's specially true for games that need every drop of performance they can get. In this article I will try to explain some common optimization methods for JavaScript code that I picked up d
Blog
Unlocking Success in Tech Education: Why Code Fellows Leads the WayBy Mitchell Robertson on September 29, 2023 In today's fast-paced digital world, technical skills have become the currency of success. Whether you're a recent high school graduate looking to kickstart your career, a seasoned professional seeking a change, or an employer searching for top talent, the choice of who to partner with fo
Introduction | Learn Javascript
Interactive online course for learning Javascript.Learn Javascript This book will teach you the basics of programming and Javascript. Whether you are an experienced programmer or not, this book is intended for everyone who wishes to learn the JavaScript programming language. JavaScript (JS for short) is the programming language that enables web pages to respond to user interaction beyond the basic
String repeat のアルゴリズムとパフォーマンス - hogehoge @teramako
ES6になると、String.prototype.repeatのメソッドが追加されるわけだが、そのアルゴリズムとパフォーマンスを追ってみている。 ES6 String.prototype.repeat の仕様では以下の様な感じでシンプルな書き方をしている。 countが 0 より小さい、または 無限大である場合は RangeError count 0 ならば、空文字列 そうでない場合は、count回、文字列を繰り返して連結する 単純に実装すれば、以下の様な感じで済む。 String.prototype.repeat = function (count) { if (count < 0 || !Number.isFinite(count)) throw new RangeError(); var result = "", str = this; for (var i = 0; i < cou
Browser Support in jQuery 1.12 and Beyond | Official jQuery Blog
With Microsoft ending Windows XP support this month, we’re giving the jQuery community some long-lead-time notice on changes to browser support. First of all, don’t panic! Nothing is really changing with respect to the browsers that can run jQuery for at least six more months. Our goal is to let everyone in the web development community know what the jQuery team intends to do over the next year, s
Debugging asynchronous JavaScript with Chrome DevTools | Blog | Chrome for Developers
Introduction A powerful feature that makes JavaScript unique is its ability to work asynchronously via callback functions. Assigning async callbacks let you write event-driven code but it also makes tracking down bugs a hair pulling experience since the JavaScript is not executing in a linear fashion. Luckily, now in Chrome DevTools, you can view the full call stack of asynchronous JavaScript call
Moonshine - A lightweight Lua VM for the browser
A lightweight Lua VM for the browser Try it Get started Source available on GitHub. About Moonshine allows you to execute compiled Lua bytecode in a JavaScript environment, such as a web browser. Moonshine's debug engine allows you to add breakpoints, step through code and interrogate variables. At just 19kB gzipped, Moonshine is suitable for mobile connections and is compatible with older browser
Jumping the hurdles with the Gamepad API | Articles | web.dev
Introduction Let the novices keep their keyboards for adventure games, their precious multi-touchy-feely fingertips for fruit cutting, and their fancy newfangled motion sensors for pretending they can dance like Michael Jackson. (Newsflash: They can't.) But you're different. You're better. You're a pro. For you, the games begin and end with a gamepad in your hands. But wait. Aren't you out of luck
Re: Single Page Application ではない場合 JavaScript コードのエントリポイントはどこにあるべきか？ - Webtech Walker
Single Page Application ではない場合 JavaScript コードのエントリポイントはどこにあるべきか？ - @kyanny's blog Backbone.Routerは基本的にhistory APIやhashchangeを使ったSPAのためのルーティングをしてくれるものなので、SPAじゃない場合に使うのはあんまりオススメできない。 方法は色々だと思うけど、自分の場合はそういうケースでは次のような簡易的なURL Dispatcherを書いて対応することが多い。 dispatcher.js これをこんな感じで使う。 // main.js new Dispatcher() .route('.*', 'Common') .route('/', 'Top') .route('/user/([^/]+)', 'User') .dispatch({ path: locatio
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
Migrating from 3.x to 4.x
New features in 4.x
http://jsw.tndra.com/
Optimization killers
GitHub - winjs/winjs: A UI toolkit for modern browsers
