Why I Won’t Use JSDOM
If you’ve been testing anything front-end related in the past 10 years, you’ve likely used JSDOM. In itself, JSDOM is not an environment or runtime. It’s a polyfill library, containing implementations for a bunch of WHATWG standards, like HTML and DOM, for Node.js. Why Node.js? Well, because the library’s goal is to execute browser-oriented code without paying the cost of spawning the actual brows
The 3 Ways JavaScript Frameworks Render the DOM
That's right, there are only 3. There may have been dozens of JavaScript frameworks over the years, but how they render the DOM is almost always identical. In this video, we will look at the approaches all Declarative JavaScript frameworks update the DOM to better understand how they work and their pros and cons. [0:00] Introduction [0:51] Anatomy of a Template [1:39] Render by Replacement [3:23
Release Version 26.0.0 · jsdom/jsdom
Breaking change: canvas peer dependency requirement has been upgraded from v2 to v3. (sebastianwachter) Other changes: Added AbortSignal.any(). (jdbevan) Added initial support for form-associated custom elements, in particular making them labelable and supporting the ElementInternals labels property. The form-associated callbacks are not yet supported. (hesxenon) Updated whatwg-url, adding support
Exploring the DOMPurify library: Bypasses and Fixes (1/2). Tags:Article - Article - Web - mXSS
title: Exploring the DOMPurify library: Bypasses and Fixes (1/2) date: Nov 17, 2024 tags: Article Web mXSS 📜 Introduction 🔍 How does client-side HTML sanitizer works? ❓ Why are mutation XSS (mXSS) possible? ▶️ DOMPurify 3.1.0 bypass (found by @IceFont 👑) Node flattening HTML Parsing states Proof Of Concept ⏩ DOMPurify 3.1.1 bypass DOMPurify 3.1.0 fix DOM Clobbering issue Proof Of Concept ⏭️ DOM
A virtual DOM in 200 lines of JavaScript
In this post I’ll walk through the full implementation of a Virtual DOM in a bit over 200 lines of JavaScript. The result is a full-featured and sufficiently performant virtual DOM library (demos). It’s available on NPM as the smvc package. The main goal is to illustrate the fundamental technique behind tools like React. React, Vue and the Elm language all simplify the creation of interactive web
HTML attributes vs DOM properties
Attributes and properties are fundamentally different things. You can have an attribute and property of the same name set to different values. For example: <div foo="bar">…</div> <script> const div = document.querySelector('div[foo=bar]'); console.log(div.getAttribute('foo')); // 'bar' console.log(div.foo); // undefined div.foo = 'hello world'; console.log(div.getAttribute('foo')); // 'bar' consol
HTML DOM — Phuoc Nguyen
Web development moves at lightning speed. I still remember when I first started using libraries like jQuery, Prototype, script.aculo.us, Zepto, and many more. Even with modern tools like Angular, VueJS, React, Solid and Svelte, we still have to deal with the Document Object Model (DOM). While these frameworks encapsulate and hide direct DOM management, they still give us access to work with the DO
testing-library でユーザの気持ちになって書くフロントエンドのテスト
TL;DR フロントエンドのテストが壊れやすく要因の一つは、ユーザがどのようにソフトウェアを使うかをクエリに反映できていないからかも testing-library はソフトウェアを使うユーザの気持ちを反映させやすいようにクエリの優先度をつけていて、それに従うほうがいい 優先度の低いクエリも役に立つことがある 運用しているアクセシビリティなどの実装のガイドラインに沿うようなテストを作るとき アクセシビリティの低い実装をリファクタリングするためのテストを作るとき はじめに フロントエンドのテストに用いるツールとして testing-library が知られています。testing-library は提供しているクエリに優先度をつけています。この優先度は、どういう基準でつけられているのでしょうか。 この記事では、 testing-library のガイドを読みながら、クエリの優先度を「ユーザの
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Release Version 27.0.0 · jsdom/jsdom
CVE-2024-51757 - GitHub Advisory Database
Release Version 25.0.0 · jsdom/jsdom
GitHub - mozilla/readability: A standalone version of the readability lib
Release v13.0.0 · capricorn86/happy-dom
Release Version 23.2.0 · jsdom/jsdom
GitHub - WICG/observable: Observable API proposal
observable/README.md at master · WICG/observable
"macrotask" isn't a thing by jakearchibald · Pull Request #74 · WICG/scheduling-apis
TAG Review Request: queueMicrotask · Issue #294 · w3ctag/design-reviews
jsdom/Changelog.md at e5b8e8afdebee816862584cb7d45bdc6f86d54af · jsdom/jsdom
FocusEvent.relatedTarget
