kelly norton: innerText vs. textContent
Why does innerText require layout? I ended with that question in my previous post about layout thrashing. Just to recap briefly, there are very common patterns of use in the DOM APIs that cause terrible performance due to unnecessary layout. These posts highlight some of the oddities that I’ve found working on web performance for several years. As with many other things in browsers, innerText’s be
javascriptoo - Tentang Bahasa Computer Java Scrypt - javascriptoo Memberikan Informasi Seputar Bahasa Computer Java Scrypt
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Sinon.JS
jQuery#triggerのテスト describe('jQuery#trigger', function() { it('イベントハンドラに値を渡せること', function(done) { var $el = $('<div>'); $el.bind('foo', function(event, val) { expect(val).to.be('bar'); done(); }); $el.trigger('foo', 'bar'); }); }); コールバックが2回呼ばれるかをテスト describe('jQuery#trigger', function() { it('イベントハンドラに値を渡せること', function(done) { var $el = $('<div>'); var count = 0; $el.bind('foo', function(event,
Unit Testing Backbone.js Applications — SitePoint
Stay Relevant and Grow Your Career in TechPremium ResultsPublish articles on SitePointDaily curated jobsLearning PathsDiscounts to dev toolsStart Free Trial7 Day Free Trial. Cancel Anytime. After spending hours, maybe days, putting the finishing touches on an awesome new feature for your web application, you’re finally ready to see it in action. You add the new code to your JavaScript base, build
フロントエンドJavaScriptにおける設計とテスト
今日話さないこと JavaScriptの基礎知識、jQueryの導入 気持ちいいUIやUXがうんちゃら CanvasやWebGLを使ったリッチでイケてるゲームの作り方
jQueryプラグインのテストを複数のjQueryのバージョンで実行する - Webtech Walker
Travis CIは language: node_js node_js: - 0.10 - 0.8 - 0.6 とか書けば複数のバージョンでテスト実行してくれてマジすごいんだけど、同じことをjQueryのバージョンでもやってみた。 主にjQueryのプラグインを書いてる場合などに便利だと思う。1.9で非互換な変更があったんでバージョン違うとプラグイン動かないとかけっこうあるからね。 まずmocha-phantomjsを使ってmochaで書いたテストをphantomjsで動くようにする。 jQueryのバージョンはmocha-phantomjsに環境変数で渡したいんだけど、mocha-phantomjsは環境変数をブラウザに渡せるようになってなかったので、パッチ書いたのでひとまずそっちを使う。（Pull Requestは送っといたので取り込まれたらそっち使いましょう） （追記：取り込まれた
Getting started with Mocha and Chai
Since I was previously doing so much RSpec I want to try to bring some of that over to my JavaScript work. Lately I've been working with the Backbone Boilerplate which is a wonderful jump-start for folks who want to get up and running with AMD and Backbone. Today I'm going to see if I can get a working BDD setup going which will run some very basic tests. In a future post I'll use this new setup t
Toward Modern Web Apps with ECMAScript 6
ECMAScript, the official name for the language we all know as JavaScript, has enjoyed tremendous success over the last couple of years. With convergent standard support, performance boosts from modern JavaScript engines, as well as its foray into the server-side stack, ECMAScript has gained significant traction and redefined the scope of HTML5 applications. The final requirement for world dominati
HTML(.js) - Befriend the DOM!
Intuitive HTML lets you navigate, manipulate and use the DOM with intuitive, readable, consistent code. Powerful HTML's functions enable you to flexibly use all native DOM features with brevity, clarity, and more power than ever. HTML document.documentElement The global HTML is the actual document root element and all element tags queried via the dot operator are descendants. HTML.tag... Element|A
JavaScript Remove Element: A Step-by-Step Guide for 2025
In the ever-evolving world of web development, staying updated with the latest JavaScript techniques is essential. In this guide, we will not only walk you through the process of removing an element from a web page using the JavaScript Remove Method but also provide you with the most current information for the year 2023. Whether you’re a seasoned developer or just starting your coding journey, th
Writing Testable JavaScript
We’ve all been there: that bit of JavaScript functionality that started out as just a handful of lines grows to a dozen, then two dozen, then more. Along the way, a function picks up a few more arguments; a conditional picks up a few more conditions. And then one day, the bug report comes in: something’s broken, and it’s up to us to untangle the mess. As we ask our client-side code to take on more
PhotoSwipe
What’s new in v5Code quality and rewrite in ES6The script is now distributed as an ES module and does not require a build step to use. The documentation is also updated and now includes more examples. Simpler initialization and dynamic import supportPhotoSwipe now supports dynamic import and does not block page rendering. <script type="module"> import Lightbox from './photoswipe-lightbox.esm.js';
機密情報を含むJSONには X-Content-Type-Options: nosniff をつけるべき - 葉っぱ日記
WebアプリケーションにおいてJSONを用いてブラウザ - サーバ間でデータのやり取りを行うことはもはや普通のことですが、このときJSON内に第三者に漏れては困る機密情報が含まれる場合は、必ず X-Content-Type-Options: nosniff レスポンスヘッダをつけるようにしましょう(むしろ機密情報かどうかに関わらず、全てのコンテンツにつけるほうがよい。関連:X-Content-Type-Options: nosniff つかわないやつは死ねばいいのに! - 葉っぱ日記)。 例えば、機密情報を含む以下のようなJSON配列を返すリソース(http://example.jp/target.json)があったとします。 [ "secret", "data", "is", "here" ] 攻撃者は罠ページを作成し、以下のようにJSON配列をvbscriptとして読み込みます。もちろ
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http://flippinawesome.org/2013/08/12/introduction-to-animating-in-html/
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GitHub - jakiestfu/Snap.js: A Library for creating beautiful mobile shelfs in Javascript (Facebook and Path style side menus)
GitHub - CSS-Tricks/Equalizer: Equalize column heights across multiple rows
Unit-Testing With Jasmine
