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Use HTTPS for local development Stay organized with collections Save and categorize content based on your preferences. Most of the time, http://localhost behaves like HTTPS for development purposes. However, there are some special cases, such as custom hostnames or using secure cookies across browsers, where you need to explicitly set up your development site to behave like HTTPS to accurately rep
Sign-in form best practices Stay organized with collections Save and categorize content based on your preferences. Use cross-platform browser features to build sign-in forms that are secure, accessible and easy to use. If users ever need to log in to your site, then good sign-in form design is critical. This is especially true for people on poor connections, on mobile, in a hurry, or under stress.
テストの学習へようこそ！ コレクションでコンテンツを整理 必要に応じて、コンテンツの保存と分類を行います。 このコースでは、ウェブ用のテストの概要と探索について説明します。 このコースで学習する内容は次のとおりです。 テストの基礎 自動テストと手動テスト テストを実施する場所と方法 ベスト プラクティス 何をテストすべきか、誰に責任があるのか、目的そのものとしてではなく、目的を達成するために手段をテストすることを検討する方法など、テストの理念。 このコースには、学習に役立つ簡潔で実用的なサンプルコードも含まれています。 コースのスコープには、Node.js などの環境で実行される、フロントエンドの JavaScript とドキュメント モデル、バックエンドでのライブラリ テストが含まれます。テストの経験はありませんが、JavaScript の基礎知識と Node.js などに関する経験が必
GitHub - microsoft/Web-Dev-For-Beginners: 24 Lessons, 12 Weeks, Get Started as a Web Developer
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序文 WebKit と Gecko の内部オペレーションに関するこの包括的な入門情報は、イスラエルのデベロッパー Tali Garsiel 氏による多くの研究の成果です。数年にわたり、ブラウザ内部に関するすべての公開データを確認し、ウェブブラウザのソースコードを読むことに多くの時間を費やしました。彼女は次のように書いています。 ウェブ デベロッパーは、ブラウザ操作の内部構造を学ぶことで、より的確な意思決定を行い、開発のベスト プラクティスの背後にある理由を知ることができます。これはかなり長いドキュメントですが、時間をかけてじっくり読むことをおすすめします。やったら嬉しいよ。 Chrome デベロッパー リレーションズ、Paul Irish はじめに ウェブブラウザは、最も広く使用されているソフトウェアです。この入門編では その仕組みを解説しますアドレスバーに「google.com」と入力し
Web Vitals Stay organized with collections Save and categorize content based on your preferences. Web Vitals is a Google initiative to provide unified guidance for web page quality signals that are essential to delivering a great user experience on the web. It aims to simplify the wide variety of available performance-measuring tools, and help site owners focus on the metrics that matter most, the
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Browser compatibility A primary reason so many CSS features are set to cooperatively release is due to the efforts of Interop 2022. Before studying the Interop efforts, it's important to look at Compat 2021’s efforts. Compat 2021 The goals for 2021, driven by developer feedback via surveys, were to stabilize current features, improve the test suite and increase passing scores of browsers for five
フロントエンドエキスパートチームが選ぶ web.dev Live2020 オススメセッション - Cybozu Inside Out | サイボウズエンジニアのブログ
こんにちは、フロントエンドエキスパートチームです。 フロントエンドエキスパートチームでは、フロントエンドに関する情報共有会を社内向けに行っています。 2017年から2020年までに10回開催しており、「Web ページのパフォーマンス」、「React の今とこれから」、「Google I/O セッションまとめ」などフロントエンドに関する情報を社内に共有してきました。 今回行ったのは、2020年6月30日から7月2日にかけて3日間オンラインで開催された web.dev Live2020 のセッションについての情報共有です。各セッションはYouTubeにて視聴できます。 今回は各チームメンバーが視聴したセッションの中から、それぞれ2つのセッションを選んで内容と感想を紹介します。 まだ web.dev Live2020 を見ていない方が興味を持つきっかけになれば幸いです。 BaHoのオススメ Ba
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"Same-site" and "same-origin" Stay organized with collections Save and categorize content based on your preferences. "Same-site" and "same-origin" are frequently cited but often misunderstood terms. For example, they're used in the context of page transitions, fetch() requests, cookies, opening popups, embedded resources, and iframes. This page explains what they are and how they're different from
Stay organized with collections Save and categorize content based on your preferences. Layout patterns built using modern CSS APIs to help you build common interfaces such as cards, dynamic grid areas, and full-page layouts. Pc0 �U p\g �U We want to help you build beautiful, accessible, fast, and secure websites that work cross-browser, and for all of your users. This site is our home for content
今年はコロナの影響でいろんなイベントがオンラインになったり、中止になったりしてますが、 web.dev live 2020 が7月初頭にやっていたので、聴講してきました。 web.dev その中でも面白かったものについていくつか紹介します。 Day 1 ほぼ Core Web Vitals についての話でした。 以下のトークが面白かったです。 What's new in speed tooling Optimize for Core Web Vitals Core Web Vitals についてはもう既にたくさん資料があると思いますが、一応解説しておきます。 Core Web Vitals 初期表示の新しい指標です。去年くらいからずっと Chrome Dev Summit とかでは言われていて、既にLighthouse をはじめとして、色々なツールでサポートされています。Largest C
When to use HTTPS for local development Stay organized with collections Save and categorize content based on your preferences. Using http://localhost for local development is fine most of the time, except in some special cases. This post explains when you need to run your local development site with HTTPS. Also see: How to use HTTPS for local development. In this post, statements about localhost a
Optimize long tasks Stay organized with collections Save and categorize content based on your preferences. Commonly available advice for making your JavaScript apps faster often includes "Don't block the main thread" and "Break up your long tasks." This page breaks down what that advice means, and why optimizing tasks in JavaScript is important. What is a task? A task is any discrete piece of work
Back and forward cache Stay organized with collections Save and categorize content based on your preferences. Back/forward cache (or bfcache) is a browser optimization that enables instant back and forward navigation. It significantly improves the browsing experience, especially for users with slower networks or devices. This page outlines how to optimize your pages for bfcache across all browsers
Yahoo! JAPAN's password-free authentication reduced inquiries by 25%, sped up sign-in time by 2.6x Stay organized with collections Save and categorize content based on your preferences. Yahoo! JAPAN is one of the largest media companies in Japan, providing services such as search, news, e-commerce, and e-mail. Over 50 million users log in to Yahoo! JAPAN services every month. Over the years, there
Sign-up form best practices Stay organized with collections Save and categorize content based on your preferences. Help your users sign up, log in and manage their account details with a minimum of fuss. If users ever need to log in to your site, then good sign-up form design is critical. This is especially true for people on poor connections, on mobile, in a hurry, or under stress. Poorly designe
This article lists the most important security headers you can use to protect your website. Use it to understand web-based security features, learn how to implement them on your website, and as a reference for when you need a reminder. Security headers recommended for websites that handle sensitive user data: Content Security Policy (CSP) Trusted Types Security headers recommended for all websites
Stay organized with collections Save and categorize content based on your preferences. This collection includes patterns that are often tricky to implement without hurting your Core Web Vitals scores. Use the code in these examples to help ensure your projects stay on the right track. � ��JV We want to help you build beautiful, accessible, fast, and secure websites that work cross-browser, and for
意味不明な内容によるハッキングを解決する コレクションでコンテンツを整理 必要に応じて、コンテンツの保存と分類を行います。 このガイドは、大量のキーワードを含む意味不明なコンテンツをサイトに追加するタイプのハッキング（Google では「意味不明な内容によるハッキング」と呼びます）を対象としています。一般的なコンテンツ マネジメント システム（CMS）のユーザーを対象としていますが、CMS を利用していなくてもこのガイドは役立ちます。 このガイドがお役に立てば幸いです。 フィードバックをお寄せください。機能の改善に役立てさせていただきます。 このタイプのハッキングを特定する 意味不明な内容によるハッキングでは、キーワードが埋め込まれた意味不明なページがサイト内に大量に自動生成されます。これらは、自分で作成していないものの、ユーザーがクリックしたくなる可能性のある URL を持つページです。
Stay organized with collections Save and categorize content based on your preferences. This course is designed for those new to web performance, a vital aspect of the user experience. It covers key web performance concepts and techniques for improving performance. Go back
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Building a dialog component Stay organized with collections Save and categorize content based on your preferences. A foundational overview of how to build color-adaptive, responsive, and accessible mini and mega modals with the <dialog> element. In this post I want to share my thoughts on how to build color-adaptive, responsive, and accessible mini and mega modals with the <dialog> element. Try th
Efficiently load third-party JavaScript Stay organized with collections Save and categorize content based on your preferences. Avoid the common pitfalls of using third-party scripts to improve load times and user experience. If a third-party script is slowing down your page load, you have two options to improve performance: Remove it if it doesn't add clear value to your site. Optimize the loading
content-visibility: the new CSS property that boosts your rendering performance | Articles | web.dev
The content-visibility property, launching in Chromium 85, might be one of the most impactful new CSS properties for improving page load performance. content-visibility enables the user agent to skip an element's rendering work, including layout and painting, until it is needed. Because rendering is skipped, if a large portion of your content is off-screen, leveraging the content-visibility proper
Web-Dev-For-Beginners/1-getting-started-lessons/1-intro-to-programming-languages/translations/README.ja.md at main · microsoft/Web-Dev-For-Beginners
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PWAs in app stores Stay organized with collections Save and categorize content based on your preferences. PWAs can be accessed through a web browser, but they can also be installed on a user's home screen as outlined in the articles in the section Provide an installable experience. One of the challenges with PWAs, however, is distributing them to app stores. This is where PWABuilder comes in. PWAB
Push notifications are now supported cross-browser Stay organized with collections Save and categorize content based on your preferences. Push notifications were standardized in 2016 with the release of the Push API and the Notification API, which are part of the W3C's Web Applications Working Group. These APIs provide the necessary functionality for web developers to incorporate push notification
Help users change passwords easily by adding a well-known URL for changing passwords Stay organized with collections Save and categorize content based on your preferences. Set a redirect from /.well-known/change-password to the change password page of your website. This will enable password managers to navigate your users directly to that page. Introduction As you may know, passwords are not the b
CSS subgrid Stay organized with collections Save and categorize content based on your preferences. CSS grid is a very powerful layout engine, but the row and column tracks created on a parent grid can only be used to position direct children of the grid container. Any author defined named grid areas and lines were lost on any other element than a direct child. With subgrid, track sizing, templates
CSS accent-color Stay organized with collections Save and categorize content based on your preferences. Today's HTML form elements are difficult to customize. It feels as if it's a choice between few or no custom styles, or resetting input styles and build it up from scratch. Building it up from scratch ends up being much more work than anticipated. It can also lead to forgotten styles for element
Browser-level image lazy loading for the web Stay organized with collections Save and categorize content based on your preferences. You can use the loading attribute to lazy-load images without the need to write custom lazy-loading code or use a separate JavaScript library. Here's a demo of the feature: Lazy-loaded images load as the user scrolls through the page. This page walks through the detai
SMS OTP form best practices Stay organized with collections Save and categorize content based on your preferences. Asking a user to provide the OTP (one time password) delivered via SMS is a common way to confirm a user's phone number. There are a few use cases for SMS OTP: Two-factor authentication. In addition to username and password, SMS OTP can be used as a strong signal that the account is o
Building a sidenav component Stay organized with collections Save and categorize content based on your preferences. In this post I want to share with you how I prototyped a Sidenav component for the web that is responsive, stateful, supports keyboard navigation, works with and without JavaScript, and works across browsers. Try the demo. If you prefer video, here's a YouTube version of this post: O
JavaScript eventing deep dive Stay organized with collections Save and categorize content based on your preferences. preventDefault and stopPropagation: when to use which and what exactly each method does. 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
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Core Web Vitals workflows with Google tools Stay organized with collections Save and categorize content based on your preferences. Combine Google tools to audit, improve and monitor your website effectively. Core Web Vitals are a set of metrics that assess the user experience on criteria such as load performance, responsiveness to user input, and layout stability. A workflow for improving Core Web
JavaScript: What is the meaning of this? Stay organized with collections Save and categorize content based on your preferences. Figuring out the value of this can be tricky in JavaScript, here's how to do it… JavaScript's this is the butt of many jokes, and that's because, well, it's pretty complicated. However, I've seen developers do much-more-complicated and domain-specific things to avoid deal
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Use HTTPS for local development | Articles | web.dev
Sign-in form best practices | Articles | web.dev
テストの学習へようこそ！ | web.dev
ブラウザの仕組み | Articles | web.dev
Web Vitals | Articles | web.dev
Learn JavaScript | web.dev
State of CSS 2022 | Blog | web.dev
Learn CSS | web.dev
"Same-site" and "same-origin" | Articles | web.dev
Layout patterns | Patterns | web.dev
web.dev live 2020 を聴講した - from scratch
When to use HTTPS for local development | Articles | web.dev
Optimize long tasks | Articles | web.dev
Back and forward cache | Articles | web.dev
Yahoo! JAPAN's password-free authentication reduced inquiries by 25%, sped up sign-in time by 2.6x | web.dev
Sign-up form best practices | Articles | web.dev
Security headers quick reference | Articles | web.dev
Web Vitals patterns | Patterns | web.dev
意味不明な内容によるハッキングを解決する | Articles | web.dev
Learn Performance | web.dev
Learn Images | web.dev
Building a dialog component | Articles | web.dev
Efficiently load third-party JavaScript | Articles | web.dev
PWAs in app stores | Articles | web.dev
Push notifications are now supported cross-browser | Blog | web.dev
Help users change passwords easily by adding a well-known URL for changing passwords | Articles | web.dev
CSS subgrid | Articles | web.dev
CSS accent-color | Articles | web.dev
Browser-level image lazy loading for the web | Articles | web.dev
SMS OTP form best practices | Articles | web.dev
Building a sidenav component | Articles | web.dev
JavaScript eventing deep dive | Articles | web.dev
Learn Testing | web.dev
Core Web Vitals workflows with Google tools | Articles | web.dev
JavaScript: What is the meaning of this? | Articles | web.dev
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