Container Timing: measuring web components performance

An introduction to Container Timing, a new web performance API that lets developers measure when complex components finish painting and shows how to use its native implementation now available behind a Chromium feature flag.

Introducing view-transitions-mock, a non-visual polyfill for same-document view transitions. @bramus built a spec-compliant JavaScript implementation of the View Transition API that works across all browsers. It handles document.startViewTransition(), the ViewTransition class with its promises, and view transition types. Animations are skipped in unsupported browsers, but DOM updates work as expected. #viewtransition #polyfill

https://www.bram.us/2026/03/11/view-transitions-mock-is-a-non-visual-polyfill-for-same-document-view-transitions/

Представляем view-transitions-mock — невизуальный полифил для view transition в рамках документа. Брамус Ван Дамм создал JavaScript-реализацию View Transition API совместимую со спецификацией, которая работает во всех браузерах без кучи условий в коде. Она обрабатывает document.startViewTransition(), класс ViewTransition с промисами и типы View Transition. Обновления DOM идентичны нативным, но анимации пропускаются в старых браузерах. #viewtransition #polyfill

https://www.bram.us/2026/03/11/view-transitions-mock-is-a-non-visual-polyfill-for-same-document-view-transitions/

#Development #Launches
Introducing CSS ‘view-transitions-mock’ · A non-visual polyfill for same-document view transitions https://ilo.im/16bak0

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#ModernCSS #ViewTransitions #Polyfill #APIs #Browsers #WebDev #Frontend #CSS #JavaScript

Introducing view-transitions-mock: A non-visual Polyfill for Same-Document View Transitions

View Transitions are a powerful Modern Web feature allow for smooth seamless animated transitions two between different states of a web page. They can make for a much more pleasant user experience, but as with any new web platform feature, browser support is not yet fully universal so you need to add some fallback logic to your code.view-transitions-mock bridges that gap by polyfilling the full JavaScript API surface of Same-Document View Transitions, without the animation bits.

Bram.us

Полифил для HTML-элемента switch. Томас Штайнер предлагает полифил, который даёт почти нативный <input type="checkbox" switch> в браузерах помимо Safari: с доступностью, поддержкой высокой контрастности и загрузкой без FOUC-прыжков. #html #polyfill

https://blog.tomayac.com/2026/01/12/a-polyfill-for-the-html-switch-element/

A polyfill for the HTML switch element. @tomayac shares a polyfill, bringing near-native <input type="checkbox" switch> to browsers beyond Safari, with accessibility mapping, high-contrast tweaks, and FOUC-safe loading. #html #polyfill

https://blog.tomayac.com/2026/01/12/a-polyfill-for-the-html-switch-element/

#Development #Previews
When will CSS Grid Lanes arrive? · “It’s going to arrive sooner than you think.” https://ilo.im/16a21t

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#ModernCSS #CssGrid #Layout #Masonry #Polyfill #ProgressiveEnhancement #Browsers #WebDev #Frontend #CSS

When will CSS Grid Lanes arrive? How long until we can use it?

Anytime an exciting new web technology starts to land in browsers, developers want to know “when in the world am I going to be able to use this?” Currently, the finalized syntax for Grid Lanes is available in Safari Technology Preview.

WebKit
Introducing the <geolocation> HTML element  |  Blog  |  Chrome for Developers

Discover the new way to request user location data.

Chrome for Developers

#Development #Launches
Input switch polyfill · A polyfill to turn checkboxes into modern switches https://ilo.im/16938w

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#Switch #Forms #Polyfill #ProgressiveEnhancement #Browser #WebDev #Frontend #HTML #CSS #JavaScript

tomayac/input-switch-polyfill

A polyfill for <input type="checkbox" switch>. Contribute to tomayac/input-switch-polyfill development by creating an account on GitHub.

GitHub