HTML’s Best Kept Secret: The output Tag
Every developer knows <input>. It’s the workhorse of the web. But <output>? Most have never touched it. Some don’t even know it exists. That’s a shame, because it solves something we’ve been cobbling together with <div>s and ARIA for years: dynamic results that are announced to screen readers by default. It’s been in the spec for years. Yet it’s hiding in plain sight. Here’s what the HTML5 spec sa
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Get All That Network Activity Under Control with Priority Hints
Get All That Network Activity Under Control with Priority Hints The browser is very good at prioritizing resources requests on its own. But it's not always great. Priority hints makes it easy to provide explicit instructions as to how and in what network activity occurs. Open up the browser's network tab and you'll see a lot of activity. Assets are being downloaded, information's being submitted,
Why the number input is the worst input - Stack Overflow
[Ed. note: While we take some time to rest up over the holidays and prepare for next year, we are re-publishing our top ten posts for the year. Please enjoy our favorite work this year and we’ll see you in 2023.] I’ve been writing code for at least 15 years. While I’ve used a lot of technologies and built a lot of stuff over the years, the thing I have done the most is the front end, i.e. HTML, CS
ã»ã‚“ã®å°‘ã—HTMLを変更ã—ã¦æ¤œè¨¼ã—ãŸã„時 – TravelBook Tech Blog
本番ã®ã‚µã‚¤ãƒˆã‚’眺ã‚ã¦ã„ã¦ã€ã€Œã‚ーã“ã“ã®HTMLã“ã†ã—ãŸã‚‰ã€ã‚‚ã£ã¨é€Ÿããªã‚‹ã®ã«ãªãƒ¼ã€ã£ã¦æ€ã†æ™‚ã‚ã‚Šã¾ã™ã‚ˆã。 僕ã¯ã‚ã‚Šã¾ã™ã€‚ã§ã‚‚ã€æ¤œè¨¼ã™ã‚‹ã ã‘ã®ãŸã‚ã«ã€ãƒ—ãƒãƒ€ã‚¯ãƒˆã®ã‚³ãƒ¼ãƒ‰ã‚’直接ã„ã˜ã‚‹ã®ã¯å¤§ã’ã•ã€‚ ãã‚“ãªæ™‚ã«ã€wgetã¨mirrorã¨ã„ã†ã‚³ãƒžãƒ³ãƒ‰ã‚’使ã£ã¦ãƒšãƒ¼ã‚¸ã‚’ダウンãƒãƒ¼ãƒ‰ã—ã¦ã€Œã»ã‚“ã®å°‘ã—ã€HTMLを変更ã—ã¦ã„ã¾ã™ã€‚ 紹介ã—ã¾ã™ï¼ˆè¿½è¨˜ã«Local Overridesã¨ã„ã†ã€Œãã®ã‚‚ã®ã‚ºãƒãƒªãªã€Chromeã®æ©Ÿèƒ½ã‚‚紹介ã—ã¦ã¾ã™ï¼‰ã€‚ 最近ã‚ã£ãŸè©±ã§ã™ã€‚特ã«Core Web Vitalsã¨ã‹é€Ÿåº¦æ”¹å–„ã«ã¤ã„ã¦ã€‚ トラベルブックã®ã¨ã‚るページã®ã‚¹ã‚³ã‚¢ãŒè½ã¡ã¦ã„ã¦ã€Chrome DevToolsã§è¦³å¯Ÿã—ã¦ã¿ã‚‹ã¨ã€ã©ã†ã‚‚YouTubeã®åŸ‹ã‚è¾¼ãŒè¶³ã‚’引ã£å¼µã£ã¦ã„る。 è¡¨ç¤ºé ˜åŸŸå¤–ã«ã‚‚é–¢ã‚らãšiframeã®ä¸èº«ãŒãƒãƒ¼ãƒ‰ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã“ã‚Œã¯ç›´ã—ãŸã„（本æ¥ãªã‚‰æœ¬ç•ªã¸ä¸Šã’ã‚‹å‰ã«æ°—ã¥ã仕組ã¿ã‚’作りãŸã„ã®ã§ã™ãŒã€ä¸€æ—¦ç½®ã„ã¦
Form Validation Using JavaScript's Constraint Validation API
Form validation is one of the primary reasons to use client-side JavaScript. It can prevent user entry errors before your app attempts to submit data to the server. But… client-side validation is not a substitute for server-side validation! Always check incoming user data on the server. Not every request will come from a browser nor will every browser run validation code. Client-side validation is
HTML Living Standard ｜ HTMLè¦ç´ ãƒãƒ¼ãƒˆã‚·ãƒ¼ãƒˆ
No.HTMLè¦ç´ ãƒã‚¹ãƒˆèª¿æŸ»ä¸»è¦ã‚³ãƒ³ãƒ†ãƒ³ãƒ„カテゴリ他ã®ã‚«ãƒ†ã‚´ãƒªãƒ•ã‚©ãƒ¼ãƒ 関連カテゴリ特徴属性概è¦å…¬å¼æ–‡æ›¸æƒ…å ±é€£ç•ªè¦ç´ å親åコンテンツモデル・概è¦ï¼ˆç‰¹æ€§ï¼å）使用ã§ãるコンテã‚スト・概è¦ï¼ˆè¦ªï¼‰ãƒ¡ã‚¿ãƒ‡ãƒ¼ã‚¿ãƒ•ãƒãƒ¼ã‚»ã‚¯ã‚·ãƒ§ãƒ‹ãƒ³ã‚°ãƒ˜ãƒ‡ã‚£ãƒ³ã‚°ãƒ•ãƒ¬ãƒ¼ã‚¸ãƒ³ã‚°ã‚¨ãƒ³ãƒ™ãƒ‡ã‚£ãƒƒãƒ‰ã‚¤ãƒ³ã‚¿ãƒ©ã‚¯ãƒ†ã‚£ãƒ–スクリプトサãƒãƒ¼ãƒˆã‚»ã‚¯ã‚·ãƒ§ãƒ‹ãƒ³ã‚°ãƒ«ãƒ¼ãƒˆãƒ‘ルパブルフォーム関連付è¦ç´ é€ä¿¡å¯èƒ½è¦ç´ リセットå¯èƒ½è¦ç´ ラベル付ã‘å¯èƒ½è¦ç´ 自動大文å—化継承è¦ç´ API記載è¦ç´ カテゴリãªã—é€éŽçš„ç½®æ›è¦ç´ ã‚°ãƒãƒ¼ãƒãƒ«å›ºæœ‰å±žæ€§èªã¿æ„味（è¦ç´„）関連ã™ã‚‹è¦ç´ ç« ã‚¿ã‚¤ãƒˆãƒ«ï¼ˆåˆ†é¡žï¼‰æ–‡æ›¸No.使用ã§ãるコンテã‚ストコンテンツモデル
Don't attach tooltips to document.body
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
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2021/5/17追記 2021å¹´5月ç¾åœ¨ã€Safariã§ã¯ã“ã®æ–¹æ³•ã«å¯¾å¿œã—ã¦ã„ã¾ã›ã‚“。Safari用ã«åˆ¥é€”ファビコンを用æ„ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ã¡ã‚‡ã£ã¨ã—ãŸWebサイトを作るã¨ãã«åœ°å‘³ã«é¢å€’ãªã®ãŒãƒ•ã‚¡ãƒ“コンã§ã™ã€‚ã‚ã–ã‚ã–ç”»åƒã‚’作るã®ã‚‚ã€ã©ã“ã‹ã‹ã‚‰ã¡ã‚‡ã†ã©è‰¯ã„ç”»åƒç´ æã‚’æŒã£ã¦ãã‚‹ã®ã‚‚ã€ã‚¢ãƒƒãƒ—ãƒãƒ¼ãƒ‰ã™ã‚‹ã®ã‚‚é¢å€’ã ã£ãŸã‚Šã—ã¾ã™ã€‚ ãã‚“ãªã¨ãã¯çµµæ–‡å—をファビコンã¨ã—ã¦ä½¿ã„ã¾ã—ょã†ã€‚ ã‚„ã‚Šæ–¹ å…ˆã«ã‚„り方を載ã›ã¦ãŠãã¾ã™ã€‚ã“れをHTMLã®<head>ã®ä¸ã¸ã‚³ãƒ”ペã™ã‚Œã°ãƒ•ã‚¡ãƒ“コンã¨ã—ã¦çµµæ–‡å—ãŒè¡¨ç¤ºã•ã‚Œã¾ã™ã€‚ <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text x=%2250%%22 y=%2250%%22 style=%
HTML Sanitizer API
This specification was published by the Web Platform Incubator Community Group. It is not a W3C Standard nor is it on the W3C Standards Track. Please note that under the W3C Community Contributor License Agreement (CLA) there is a limited opt-out and other conditions apply. Learn more about W3C Community and Business Groups. 1. Introduction This section is not normative. Web applications often nee
Sign-in form best practices  | Articles  | web.dev
If users ever need to sign 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. Poorly designed sign-in forms get high bounce rates. Each bounce could mean a lost and disgruntled user—not just a missed sign-in opportunity. Here is an example of a simple sign-in form that demonstrates all of the b
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Stefan Judis on Twitter: "`inputmode` on HTML elements. 🙈👇 #devsheets 🔗 MDN: https://t.co/sAvjqZQvBT https://t.co/t3dSD8OdnP"
JSitor - JavaScript, HTML, CSS, online editor
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