KV Storage - the Web's First Built-in Module  | Blog  | Chrome for Developers
Browser vendors and web performance experts have been saying for the better part of the last decade that localStorage is slow, and web developers should stop using it. To be fair, the people saying this are not wrong. localStorage is a synchronous API that blocks the main thread, and any time you access it you potentially prevent your page from being interactive. The problem is the localStorage AP
Page Lifecycle API  | Web Platform  | Chrome for Developers
Modern browsers today will sometimes suspend pages or discard them entirely when system resources are constrained. In the future, browsers want to do this proactively, so they consume less power and memory. The Page Lifecycle API provides lifecycle hooks so your pages can safely handle these browser interventions without affecting the user experience. Take a look at the API to see whether you shou
PWACompat - the Web App Manifest for all browsers  | Blog  | Chrome for Developers
You've designed a web app, wrote its code and service worker, and finally added the Web App Manifest to describe how it should behave when 'installed' on a user's device. This includes things like high-resolution icons to use for e.g. a mobile phone's launcher or app switcher, or how your web app should start when opened from the user's home screen. And while many browsers will respect the Web App
Web Animations in WebKit
Over the last 8 months we have been working on adding support for Web Animations, a W3C standard offering Web developers a JavaScript API to create, query and controls animations. While there is work left to do to ship this experimental feature to the Web at large, we feel our implementation has matured enough that, with the release of Safari Technology Preview 59, we can turn Web Animations on by
Enhancing automated testing in Microsoft Edge with new WebDriver capabilities, W3C protocol support, and automatic updates
Enhancing automated testing in Microsoft Edge with new WebDriver capabilities, W3C protocol support, and automatic updates Just last week, the WebDriver specification officially became a W3C Recommendation, defining a standard way for web developers and browser engineers to automate the browser. This is a major step forward for web site and web app testing, as well as cross-browser interoperabilit
Feature Policyã€ãƒ–ラウザã®ç‰¹å®šæ©Ÿèƒ½ã‚’無効ã«ã™ã‚‹ä»•æ§˜ - ASnoKaze blog
W3Cã§Feature Policyã¨ã„ã†ä»•æ§˜ãŒè°è«–ã•ã‚Œã¦ã„ã¾ã™ã€‚仕様ã¯è‘—者ã§ã‚ã‚‹Googleã®Ilya Grigorikæ°ã®ãƒªãƒã‚¸ãƒˆãƒª(URL)より確èªã§ãã¾ã™ã€‚ ã“ã®ãƒ‰ã‚ュメントã¯ã¾ã W3Cå…¬å¼ã®ãƒ‰ã‚ュメントã¨ã¯ãªã£ã¦ã¯ã„ã¾ã›ã‚“ãŒã€å…ˆæœˆè¡Œã‚ã‚ŒãŸFace-to-Faceã®ãƒŸãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã§ã‚‚è°è«–ãŒã•ã‚Œã¦ã„ã¾ã™(è°äº‹éŒ²) Feature Policy ã‚»ã‚ュリティやパフォーマンスã®è¦³ç‚¹ã§ã€Webデベãƒãƒƒãƒ‘ーãŒãƒ–ラウザã®ç‰¹å®šã®API（機能）を無効ã«ã—ãŸã„å ´åˆã‚‚ã‚ã‚Šã¾ã™ã€‚ ãã“ã§ã€ Feature-Policyヘッダを用ã„ã¦ä»¥ä¸‹ã®ã‚ˆã†ã«ãƒ–ラウザã®æ©Ÿèƒ½ã‚’制é™ã§ãるよã†ã«ã™ã‚‹ã®ãŒã“ã®ä»•æ§˜ã§ã™ã€‚ ã¾ãŸã€ã“ã®Feature-Policyヘッダã¯ç¾åœ¨IETFã§è°è«–ãŒè¡Œã‚ã‚Œã¦ã„ã‚‹"A JSON Encoding for HTTP Header Field Values"(URL)ã¨ã„ã†HTTPヘッダ値ã«jso
Layered APIs 㨠High Level API ã®æ¨™æº–åŒ–æŒ‡é‡ | blog.jxck.io
Intro Extensible Web Manifest 以é™ã€æ¨™æº–化作æ¥ã¯ Low Level API ã«ãƒ•ã‚©ãƒ¼ã‚«ã‚¹ã—ã€ä¸€å®šã®æˆæžœãŒå‡ºã¦ã„る。 ãã“ã§ã€ã“れらをベースã¨ã—ã€ã‚ˆã‚Šã‚¢ãƒ—リレイヤã®éœ€è¦ã‚’満ãŸã™ãŸã‚ã® High Level API ã‚’ã©ã†æ¨™æº–化ã™ã‚‹ã‹ã€ã¨ã„ã†ç‚¹ã«ã¤ã„ã¦æŒ‡é‡ãŒæ案ã•ã‚ŒãŸã€‚ 基本ã¯ã€Low Level API を元㫠Polyfill を作りã€ãã“ã‹ã‚‰ã®ãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã«ã‚ˆã‚Šç–定を進ã‚ã‚‹ã¨ã„ã†æ–¹é‡ã 。 åˆã‚ã›ã¦ ES Modules ã® Import を用ã„ã¦ã€polyfill ã¨ãƒã‚¤ãƒ†ã‚£ãƒ–実装をスムーズã«åˆ‡ã‚Šæ›¿ãˆã‚‹æ‹¡å¼µãŒæ案ã•ã‚Œã¦ã„る。 本記事ã§ã¯ Layered APIs (LAPIs) ã¨å‘¼ã°ã‚Œã‚‹ã€ã“ã®ä¸€é€£ã®æž 組ã¿ã«ã¤ã„ã¦è§£èª¬ã™ã‚‹ã€‚ ã¾ãŸã€åŒç‰ã®è©±ã‚’ æ±äº¬ Node å¦åœ’ #tng30 ã§è¡Œã£ãŸè³‡æ–™ã¯ä»¥ä¸‹ã§ã‚る。 Web over Layered APIs St
Cookie Store API Explainer
Cookie Store API Explainer This proposal has the following main goals. Expose HTTP cookies to service workers. Offer an asynchronous alternative to document.cookie. While accomplishing the goals above, the proposal gained the following nice-to-have properties. Cookies expose the parsed components of the cookie-related HTTP headers. Script does not need to parse or serialize HTTP headers. The APIs
ブラウザã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¨ãƒ©ãƒ¼ã‚’レãƒãƒ¼ãƒˆã•ã›ã‚‹Network Error LoggingãŒæ¥ãŸ - ASnoKaze blog
20180727追記 CORS対応ãŒå¿…è¦ã«ãªã‚Šã¾ã—㟠asnokaze.hatenablog.com 20180703追記 ドã‚ュメントã¯https://w3c.github.io/network-error-logging/ ã«ãŒç§»ã•ã‚Œã¾ã—㟠20180608追記 仕様上ã¯ã€jsonã®å„値ã¯ãƒã‚¤ãƒ•ãƒ³ã§ã¯ãªãã€ã‚¢ãƒ³ãƒ€ãƒ¼ã‚¹ã‚³ã‚¢ã‚’使用ã™ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ report-to => report_to max-age => max_age ... etc https://github.com/WICG/network-error-logging/commit/86c4d1c0fa4c5d5ca1d8bdcd9fa931e7e4ab65c2 ã“ã‚“ãªæ„Ÿã˜ nel: {"report_to": "network-errors", "max_age": 2592000, "include_subdomai
Speedometer 2.0: A Benchmark for Modern Web App Responsiveness
Jan 15, 2018 by Addy Osmani, Mathias Bynens & Ryosuke Niwa @rniwa_dev In 2014, the WebKit team at Apple released Speedometer 1.0, a benchmark for web app responsiveness. It simulates user interactions in web applications, using TodoMVC to orchestrate adding, completing, and removing todo items. Speedometer repeats these actions using DOM APIs that were extensively used in real-world applications.
Autofill: What web devs should know, but don’t
Many people know that you can scan your credit card in Mobile Safari. But how many web developers know how to create a form that supports that feature? Not many I’d bet. Auto-Fill Credit Card Forms Using Your iPhone’s Camera in iOS 8. Used with permission. It doesn’t help that Apple has provided zero documentation on how the scan credit card feature works. But there is another factor at play here.
パフォーマンスã«é–¢ã™ã‚‹å„種ブラウザAPI - 1000ch.net
パフォーマンスã«é–¢ã™ã‚‹å„種ブラウザAPI ◯◯ Timing APIã¯W3Cã®Web Performance Working Groupã®Ilya Grigorikã‚’ä¸å¿ƒã«ç–定ãŒé€²ã‚られã¦ã„ã‚‹ã€ãƒ–ラウザã®ãƒ‘フォーマンスを計測ã™ã‚‹ãƒ–ラウザAPIã§ã‚る。 User Timing API: ä»»æ„ã®ãƒ©ãƒ™ãƒ«ã‚’用ã„ã¦ãƒ—ãƒã‚°ãƒ©ãƒ ã®å®Ÿè¡Œã«ã‹ã‹ã£ãŸã‚’å–å¾—ã™ã‚‹ Navigation Timing API: ブラウザライフサイクルã®ç™ºç”Ÿã—ãŸæ™‚é–“ã‚’å–å¾—ã™ã‚‹ Resource Timing API: リソースã®ãƒãƒ¼ãƒ‰ã«éš›ã—ã¦ç™ºç”Ÿã—ãŸå„種時間をå–å¾—ã™ã‚‹ Frame Timing API: ブラウザフレームã®å†…訳をå–å¾—ã™ã‚‹ Server Timing API: サーãƒãƒ¼å‡¦ç†ã®å†…訳をå–å¾—ã™ã‚‹ High Resolution Time API: 高精度ã®ã‚¿ã‚¤ãƒ スタンプをæä¾›ã™ã‚‹ ブラウザã®windowオブジェクトã«perf
ทางเข้า CMD368 ล่าสุดปี 2025 à¹à¸—งบà¸à¸¥ คาสิโน ต้à¸à¸™à¸£à¸±à¸šà¸ªà¸¡à¸²à¸Šà¸´à¸à¹ƒà¸«à¸¡à¹ˆ 100%
ทางเข้า CMD368 ล่าสุดปี 2025 à¹à¸—งบà¸à¸¥ คาสิโน ต้à¸à¸™à¸£à¸±à¸šà¸ªà¸¡à¸²à¸Šà¸´à¸à¹ƒà¸«à¸¡à¹ˆ 100% ทางเข้า CMD368 ล่าสุด เว็บเดิมพันà¸à¸à¸™à¹„ลน์ ให้บริà¸à¸²à¸£à¹€à¸”ิมพันคาสิโนสด à¹à¸—งบà¸à¸¥ สล็à¸à¸• หวย ยิงปลา ลิงค์à¸à¸±à¸žà¹€à¸”ทล่าสุดรà¸à¸‡à¸£à¸±à¸šà¸¡à¸·à¸à¸–ืภเว็บตรงปลà¸à¸”ภัย ให้บริà¸à¸²à¸£à¸¡à¸²à¸™à¸²à¸™à¸à¸§à¹ˆà¸² 10 ปี สมาชิà¸à¹ƒà¸«à¸¡à¹ˆà¸à¸²à¸à¸‚ั้นต่ำ 300 บาท ต้à¸à¸™à¸£à¸±à¸š 100% ยินดีต้à¸à¸™à¸£à¸±à¸šà¸ªà¸¹à¹ˆ CMD368 ทางเข้า CMD368 ล่าสุดปี 2025 ที่ทางเว็บไซต์เราได้ทำà¸à¸²à¸£à¸à¸±à¸žà¹€à¸”ท ให้ท่านสมาชิà¸à¹€à¸‚้าไว้ใช้งานนั้น ทางทีมงานได้คัดà¸à¸£
CSS Isn’t Black Magic
By aimeemarieknight Pulling Back The Curtains on Your Stylesheets If you’re a web developer, chances are you’re going to have to write some CSS from time to time. When you first looked at CSS, it probably seemed like a breeze. You added some borders here, changed some colors there. JavaScript is the hard part of front end development, right? Somewhere during your progression as a web developer, th
Getting Started with Headless Chrome  | Blog  | Chrome for Developers
TL;DR Headless Chrome is shipping in Chrome 59. It's a way to run the Chrome browser in a headless environment. Essentially, running Chrome without chrome! It brings all modern web platform features provided by Chromium and the Blink rendering engine to the command line. Why is that useful? A headless browser is a great tool for automated testing and server environments where you don't need a visi
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Chrome Platform Status
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Chrome Developers on Twitter: "✅ #io18web tips Linking to another page using target="_blank" will run the new page on same process as your page… https://t.co/pUVOe7TOxc"
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Cross-Browser Support - Developer Diary #Day2
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