Deep-copying in JavaScript using structuredClone | Articles | web.dev
Deep-copying in JavaScript using structuredClone Stay organized with collections Save and categorize content based on your preferences. The Platform now ships with structuredClone(), a built-in function for deep-copying. For the longest time, you had to resort to workarounds and libraries to create a deep copy of a JavaScript value. The Platform now ships with structuredClone(), a built-in functio
JavaScript eventing deep dive | Articles | web.dev
Event.stopPropagation() and Event.preventDefault() JavaScript event handling is often straightforward. This is especially true when dealing with a simple (relatively flat) HTML structure. Things get a bit more involved though when events are traveling (or propagating) through a hierarchy of elements. This is typically when developers reach for stopPropagation() and/or preventDefault() to solve the
@open-wc/semantic-dom-diff
Testing >> Semantic Dom Diff ||40 semantic-dom-diff allows diffing chunks of dom or HTML for semantic equality: whitespace and newlines are normalized tags and attributes are printed on individual lines comments are removed style, script and SVG contents are removed tags, attributes or element's light dom can be ignored through configuration Manual Setup Chai Plugin While semantic-dom-diff can be
Don't attach tooltips to document.body
TL;DR Instead of attaching tooltips directly to document.body, attach them to a predefined div in document.body. BAD <body> <!-- temporary div, vanishes when tooltips vanishes --> <div>my tooltip</div> <body> GOOD <body> <!-- this div stays forever, just for attaching tooltips --> <div id="tooltips-container"> <!-- temporary div, vanishes when tooltips vanishes --> <div>my tooltip</div> </div> <bo
Building A Dynamic Header With Intersection Observer — Smashing Magazine
Have you ever needed to build a UI where some component on the page needs to respond to elements as they’re scrolled to a certain threshold within the viewport — or perhaps in and out of the viewport itself? In JavaScript, attaching an event listener to constantly fire a callback on scroll can be performance-intensive, and if used unwisely, can make for a sluggish user experience. But there is a b
Using AbortController As An Alternative For Removing Event Listeners | CSS-Tricks
Using AbortController as an Alternative for Removing Event Listeners The idea of an “abortable” fetch came to life in 2017 when AbortController was released. That gives us a way to bail on an API request initiated by fetch() — even multiple calls — whenever we want. Here’s a super simple example using AbortController to cancel a fetch() request: const controller = new AbortController(); const res
Vanilla Hooks (outside React)
Photo by Vishal Jadhav on UnsplashHooks are a pattern, not something usable with React library only, and this post would like to explain, and walk through, some interesting possibility. What are hooks?Hooks are nothing more, and nothing less, than a wrap around a generic callback. The callback itself is not a hook, unless it’s being handled by a hook-helper, in this case provided by µhooks library
Document: characterSet プロパティ - Web API | MDN
ドキュメントオブジェクトモデル (DOM)DocumentコンストラクターDocument()インスタンスプロパティactiveElementadoptedStyleSheetsalinkColor 非推奨; all 非推奨; anchors 非推奨; applets 非推奨; bgColor 非推奨; bodycharacterSetchildElementCountchildrencompatModecontentTypecookiecurrentScriptdefaultViewdesignModedirdoctypedocumentElementdocumentURIdomain 非推奨; embedsfeaturePolicy Experimental fgColor 非推奨; firstElementChildfontsformsfragmentDirectivefullscr
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Release v1.5.0 - Batch to the Future · solidjs/solid
Release v6.0.0 · capricorn86/happy-dom
Release Version 20.0.0 · jsdom/jsdom
Release Inferno v8.0.0 · infernojs/inferno
display-locking/explainers/isvisible.md at main · WICG/display-locking
GitHub - capricorn86/happy-dom: A JavaScript implementation of a web browser without its graphical user interface
Cloning DOM nodes and handling attached events | pawelgrzybek.com
GitHub - google/safevalues
Release Version 16.7.0 · jsdom/jsdom
Define self.structuredClone() · whatwg/html@1b5099f
GitHub - WebReflection/linkedom: A triple-linked lists based DOM implementation.
javascriptでShift-JISになった文字列をデコード