What's New In DevTools (Chrome 96) | Blog | Chrome for Developers
Preview feature: New CSS Overview panel Use the new CSS Overview panel to identify potential CSS improvements on your page. Open the CSS Overview panel, then click on Capture overview to generate a report of your page’s CSS. You can further drill down on the information. For example, click on a color in the Colors section to view the list of elements that apply the same color. Click on an element
Web Interface Guidelines
Interfaces succeed because of hundreds of choices. This is a living, non-exhaustive list of those decisions. Most guidelines are framework-agnostic, some specific to React/Next.js. Feedback is welcome. Interactions Keyboard works everywhere. All flows are keyboard-operable & follow the WAI-ARIA Authoring Patterns. Clear focus. Every focusable element shows a visible focus ring. Prefer :focus-visib
Bootstrap 5
The Bootstrap Blog News and announcements for all things Bootstrap, including new releases, Bootstrap Themes, and Bootstrap Icons. Bootstrap 5 has officially landed! After three alphas, three betas, and several months of hard work, we’re shipping the first stable release of our new major version. It’s been a wild ride made possible by our maintainers and the amazing community that uses and contrib
What's New In DevTools (Chrome 94) | Blog | Chrome for Developers
Use DevTools in your preferred language Chrome DevTools now supports more than 80 languages, allowing you to work in your preferred language! Open Settings, then select your preferred language under the Preferences > Language dropdown and reload DevTools. Preferences" width="800" height="494"> Chromium issue: 1163928 New Nest Hub devices in the Device list You can now simulate the dimensions of Ne
Sublime Text 4
The first stable release of Sublime Text 4 has finally arrived! We've worked hard on providing improvements without losing focus on what makes Sublime Text great. There are some new major features that we hope will significantly improve your workflow and a countless number of minor improvements across the board. A huge thanks goes out to all the beta testers on discord and all the contributors to
What's New In DevTools (Chrome 95) | Blog | Chrome for Developers
New CSS length authoring tools DevTools added an easier yet flexible way to update lengths in CSS! In the Styles pane, look for any CSS property with length (e.g. height, padding). Hover over the unit type, and notice the unit type is underlined. Click on it to select a unit type from the dropdown. Hover over the unit value, and your mouse pointer is changed to horizontal cursor. Drag horizontally
WebKit Features in Safari 17.0
Sep 18, 2023 by Jen Simmons and the Safari / WebKit Team Today’s the day for Safari 17.0. It’s now available for iOS 17 and iPadOS 17. [Update September 26th] And now, Safari 17.0 is available for macOS Ventura, and macOS Monterey, and macOS Sonoma. Safari 17.0 is also available in the vision OS Simulator, where you can test your website by downloading the latest beta of Xcode 15, which supports t
09 Mar, 2021 TL;DRInstead 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> <body> <!-- this div stays forever, just for attaching tooltips --> <div id="tooltips-container"> <!-- temporary div, vanishes when tooltips vanishes --> <div>my tooltip</div> </d
What's New In DevTools (Chrome 100) | Blog | Chrome for Developers
Chrome 100 Here’s to the 100th Chrome version! Chrome DevTools will continue to provide reliable tools for developers to build on the web. Take a moment to click around in the What’s New tab to celebrate the milestones. As usual, you can watch the latest What’s New in DevTools video by clicking on the image. View and edit @supports at rules in the Styles pane You can now view and edit the CSS @sup
mermaidチート表｜ききよ
あちこち調べまわるのに疲れたので自分用に作成します。 (7/10更新[途中上げ) mermaidとはmd(マークダウン)形式の時、図が描けるやつ(ざっくり) githubがこれに対応したので、readme.mdが画期的になったとかなんとか。 左に打ち込んだコードが右みたいな図になる mermaidの導入VScodeの拡張機能ですべて済む。 Markdown Preview Mermaid最低限これだけあればおｋ。 Markdown Preview Enhancedも加えるとGithubとかmermaid公式の色合いになるぞ。 書き方.mdに書くのが前提。 ```mermaid 【この間に書く】 ````(Shift+@)で上のように囲むとその間だけその言語対応になる。 場合から使い分けるmermaid いくつか種類があるので、使い分けに。 なお、 ```mermaid ```は省略する。
Version 1.108 is now available! Read about the new features and fixes from December. Release date: May 8, 2025 Update: Enable Next Edit Suggestions (NES) by default in VS Code Stable (more...). Update 1.100.1: The update addresses these security issues. Update 1.100.2: The update addresses these issues. Update 1.100.3: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Univers
What's New in DevTools (Chrome 117) | Blog | Chrome for Developers
Network panel improvements Override web content locally even faster The local overrides feature is now streamlined, so you can easily mock response headers and web content of remote resources from the Network panel without access to them. To override web content, open the Network panel, right-click a request, and select Override content. If you have local overrides set up but disabled, DevTools en
What's New In DevTools (Chrome 92) | Blog | Chrome for Developers
CSS grid editor A highly requested feature. You can now preview and author CSS Grid with the new CSS Grid editor! When an HTML element on your page has display: grid or display: inline-grid applied to it, you can see an icon appear next to it in the Styles pane. Click the icon to toggle the CSS grid editor. Here you can preview the potential changes with the on screen icons (e.g. justify-content:
Perfectly Pointed Tooltips: A Foundation – Frontend Masters Blog
At the time of writing, only Chrome and Edge have full support of the features we will be using. Let’s start with a demo: Click-and-drag the anchor and see how the tooltip behaves. It will try to position itself in a way to remain visible and avoid any overflow. Cool, right? No JavaScript is used to position the tooltip (except the one for dragging the anchor, which is irrelevant to the trick). Th
Modern CSS Tooltips And Speech Bubbles (Part 1) — Smashing Magazine
Tooltips are a very common pattern used in CSS for years. There are a lot of ways to approach tooltips in CSS, though some evoke headaches with all the magic numbers they require. In this article, Temani Afif presents modern techniques to create tooltips with the smallest amount of markup and the greatest amount of flexibility. In a previous article, we explored ribbon shapes and different ways to
Version 1.108 is now available! Read about the new features and fixes from December. Update 1.75.1: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the January 2023 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Profiles -
Intro ここまでで <dialog> 要素が標準化され、Modal/non-Modal な Dialog がネイティブで出せるようになった。 今まで自前で実装していた z-index の指定や、フォーカスの管理、非活性化、キーボードでの処理、スタイルなども、細かい仕様がほぼ標準によってカバーされた。 Top Layer inert :modal / ::backdrop CloseWatcher Focusable Scrollers etc しかし、<dialog> はあくまで「ユーザのインタラクションを求める」という用途で使うものであり、role=dialog ではない、例えばちょっとしたメッセージの通知などに使うものではない。 そこで、これらの資産を活用し、より汎用的な UI を標準化しようという話が、<dialog> の標準化の裏で並行して行われた。 Toast 最初の目立った
WebKit Features for Safari 26.2
Safari 26.2 is a big release. Packed with 62 new features, this release aims to make your life as a web developer easier by replacing long-standing frustrations with elegant solutions. You’ll find simpler ways to create common UI patterns with just a few lines of HTML or CSS, and no JavaScript — like auto-growing text fields with CSS field-sizing, and buttons that open/close dialogs and popovers w
What's New In DevTools (Chrome 98) | Blog | Chrome for Developers
Preview feature: Full-page accessibility tree The new Full-page accessibility tree makes it easier for you to get an overview of the full-page accessibility tree and help you better understand how your web content is exposed to assistive technology. In the Elements panel, open the Accessibility pane and select Enable full-page accessibility tree checkbox. Then, reload DevTools and you will see a n
Try Mastering Emacs for free! Are you struggling with the basics? Have you mastered movement and editing yet? When you have read Mastering Emacs you will understand Emacs. It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes. Notable features include the formal inclusion of native compilation, a technique that will greatly speed up y
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.57.1: The update addresses these issues. The Workspace Trust feature addresses CVE-2021-34529. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the May 2021 release of Visual Studio Code. There are a number of updates in this version that we ho
Web Interface Guidelines
IntroductionWeb Interface Guidelines This document outlines a non-exhaustive list of details that make a good (web) interface. It is a living document, periodically updated based on learnings. Some of these may be subjective, but most apply to all websites. The WAI-ARIA spec is deliberately not duplicated in this document. However, some accessibility guidelines may be pointed out. Contributions ar
Why Mesop? - Mesop
Why Mesop?¶ Mesop is a new UI framework that enables Python developers to quickly build delightful web apps in a scalable way. Many Python UI frameworks are easy to get started with, but customizing beyond the defaults often requires diving into JavaScript, CSS, and HTML — a steep learning curve for many developers. Mesop provides a different approach, offering a framework that's both easy to lear
Announcing Interop 2025
ContentsIntroducing Interop 2025Focus Areas for 2025Investigation Efforts Look Ahead Exciting news for web developers, designers, and browser enthusiasts alike — Interop 2025 is here, continuing the mission of improving cross-browser interoperability. For the fourth year in a row, we are pleased to collaborate with Bocoup, Igalia, Google, Microsoft, and Mozilla to smooth out inconsistencies betwee
Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Update 1.72.1: The update addresses these security issues. Update 1.72.2: The update addresses these issues. Welcome to the September 2022 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Tool bar customization - Hide/show
We are thrilled to announce the release of Quill 2.0! Please check out the announcement post. Major Improvements Quill is now a valid ESM package for better ecosystem (e.g. bundlers) and tree-shaking support Nested Quill support #3590 Improved IME and spell corrector support #3807 Semantic cleanups for TEXT_CHANGE event #3778 History: Record selection in history module #3823 Auto detect scrolling
What's New in DevTools (Chrome 111) | Blog | Chrome for Developers
Debugging HD color with the Styles pane New CSS color types and spaces are coming to the web! It is equally exciting that DevTools introduced new tools to help developers create, convert and debug High Definition color. The Styles pane now supports 12 new color spaces and 7 new gamuts as outlined in the CSS Color Level 4 specification. See High Definition CSS Color Guide for a comprehensive unders
Intro ここまで解説した仕様を踏まえ、いくつかの代表的なユースケースの実装について考えていく。 あくまで仕様の組み合わせ方についての解説であり、実装そのものの推奨ではない。 また、ここで紹介する仕様はまだ変更の可能性があり、かつ実装も揃っていないものがある点に注意 Tooltip 今回は、Menu の実装を考えてみる。GitHub でいうとこの部分だ。 元となるボタンによって表示され、このボタンからの相対位置で調整されるため、Anchor Positioning を活用することになる。非常によくある実装パターンだ。 HTML の仕様にも、類似の実装が Example として掲載されている。 6.12 The popover attribute https://html.spec.whatwg.org/multipage/popover.html#the-popover-attribut
What's New In DevTools (Chrome 101) | Blog | Chrome for Developers
Import and export recorded user flows as a JSON file The Recorder panel now supports importing and exporting user flow recordings as a JSON file. This addition makes it easier to share user flows and can be useful for bug reporting. For example, download this JSON file. You can import it with the import button and replay the user flow. Apart from that, you can export the recording as well. After r
Let’s talk about disabled buttons. Specifically, let’s get into why we use them and how we can do better than the traditional disabled attribute in HTML (e.g. <button disabled> ) to mark a button as disabled. There are lots of use cases where a disabled button makes a lot of sense, and we’ll get to those reasons in just a moment. But throughout this article, we’ll be looking at a form that allows
Web platform concepts can sometimes be quite different, yet seem very similar. Semantics, behaviours and characteristics can be tricky to distinguish. In addition to the <dialog> element, HTML now has a popover attribute. This post goes into the differences between dialogs, popovers, overlays and disclosure widgets. We'll also look at what it means when an element is modal. All somewhat related co
What's New In DevTools (Chrome 99) | Blog | Chrome for Developers
Throttling WebSocket requests The Network panel now supports throttling web socket requests. Previously, the network throttling didn't work on web socket requests. Open the Network panel, click on a web socket request and open the Messages tab to observe the message transfers. Select Slow 3G to throttle the speed. Chromium issue: 423246 New Reporting API pane in the Application panel Use the new R
Clarifying the Relationship Between Popovers and Dialogs | CSS-Tricks
The difference between Popovers (i.e., the popover attribute) and Dialogs (i.e., both the <dialog> element and the dialog accessible role) is incredibly confusing — so much that many articles (like this, this, and this) have tried to shed some light on the issue. If you’re still feeling confused, I hope this one clears up that confusion once and for all. Distinguishing Popovers From Dialogs Let’s
Migrating to v5
Track and review changes to the Bootstrap source files, documentation, and components to help you migrate from v4 to v5. Dependencies Dropped jQuery. Upgraded from Popper v1.x to Popper v2.x. Replaced Libsass with Dart Sass as our Sass compiler given Libsass was deprecated. Migrated from Jekyll to Hugo for building our documentation Browser support Dropped Internet Explorer 10 and 11 Dropped Micro
What's New In DevTools (Chrome 97) | Blog | Chrome for Developers
Preview feature: New Recorder panel Use the new Recorder panel to record, replay and measure user flows. Open the Recorder panel. Follow the instructions on screen to start a new recording. For example, you can record the coffee checkout process with this coffee ordering demo application. After adding a coffee and filling out payment details, you can end the recording, replay the process or click
What's New In DevTools (Chrome 107) | Blog | Chrome for Developers
Customize keyboard shortcuts in DevTools You can now customize keyboard shortcuts for your favorite commands in DevTools. Go to Settings > Shortcuts, hover over a command and click the Edit button (pen icon) to customize the keyboard shortcut. You can create chords (a.k.a multi-key press shortcuts) as well. Chromium issues: 1335274, 174309 Toggle light and dark themes with keyboard shortcut Config
JupyterLab Changelog — JupyterLab 4.6.0a1 documentation
JupyterLab Changelog# v4.5# JupyterLab 4.5 includes a number of new features (described below), bug fixes, and enhancements. This release is compatible with extensions supporting JupyterLab 4.0. Extension authors are encouraged to consult the Extension Migration Guide which lists deprecations and changes to the public API. Performance and windowing# The default windowing mode is now contentVisibil
What's New in DevTools (Chrome 112) | Blog | Chrome for Developers
Recorder updates Replay extensions support The Recorder introduces support for custom replay options that you can embed into DevTools with an extension. Try out the example extension. Select the new custom replay option to open the custom replay UI. To customize the Recorder to your needs and integrate it with your tools, consider developing your own extension: explore the chrome.devtools.recorder
ASP.NET Core – 業務プログラムの実践学習
スタートアップ .NET ASP.NET Core入門 簡単なページを作ってみる - ウマヤディア 意識低めのASP.NET Core MVC入門（２）簡単なフォームを作る 意識低めのASP.NET Core MVC入門（３）モデルを使ってみる 概要 はじめてのASP.NET MVC5 連載：ASP.NET MVC入門【バージョン3対応】 - ＠IT 第1回 Controller－View開発のキモを押さえる（1/3） - ＠IT 第7回 レイアウト／部分ビューでアプリ共通のデザインを定義（1/4） - ＠IT ASP.NET MVC 開発を始める前に理解しておきたいこと - Qiita ASP.NET の機能 - ASP.NET 入門 【Visual Studio 2019】ASP.NET MVCでHello,Worldを出力！初心者でもわかりやすい画像付き | フライテック ASP.N
Style Guide • Angular
Introduction This guide covers a range of style conventions for Angular application code. These recommendations are not required for Angular to work, but instead establish a set of coding practices that promote consistency across the Angular ecosystem. A consistent set of practices makes it easier to share code and move between projects. This guide does not cover TypeScript or general coding pract
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Don't attach tooltips to document.body
April 2025 (version 1.100)
January 2023 (version 1.75)
Dialog と Popover #4 | blog.jxck.io
What's New in Emacs 28.1?
May 2021 (version 1.57)
September 2022 (version 1.72)
Release Version 2.0.0 · slab/quill
Dialog と Popover #10 | blog.jxck.io
Making Disabled Buttons More Inclusive | CSS-Tricks
Dialogs and popovers seem similar. How are they different?