A rather geeky/technical weblog, est. 2001, by Bramus
<calc-input>, a custom input element that accepts mathematical formulas
Continuing my streak of small form-related Custom Elements (like <rich-input>), I built <calc-input>. It’s a custom input element that accepts mathematical formulas — such as 2 + 3 or (2 + 3) * 4 — and automatically toggles between showing the formula on focus and the calculated result on blur.
<show-keystrokes> custom element
When recording screen casts or doing live demos, I typically rely on a native macOS app to visualize my keystrokes on screen. Recently, however, that app got blocked on my work machine by a corporate security policy. Additionally, the keystrokes visualized through that app don’t show up when screen sharing a specific window or tab.
Because I needed to demo a website that relies heavily on keyboard navigation — and thus really needed those keystrokes to be visible to the audience — I found myself in a bit of a pickle. So with the help of Gemini, I decided to build a web-native solution to fill that gap: <show-keystrokes>
<rich-input>, a GitHub-like search/filter text input to embed on your site
While working on a side-project to better navigate and search through my record collection, I found myself in need of a rich search input: one that accepts free-form text alongside structured filters like artist:“Aphex Twin” or label:“Warp Records” — You know, like the one you see on GitHub when searching/filtering issues.
When I quickly realized a standalone custom element for this didn’t exist yet, I nerd sniped myself into building curating one.
<mermaid-element>, a custom element to display Mermaid diagrams
Today I learned that CodePen supports Mermaid diagrams — Chris Coyier has a a whole collection with examples here — and I also learned that there is no custom element to easily include these in your markup … so I built one.
The Lit team is pleased to announce an experimental preview release of @lit-labs/eleventy-plugin-lit, a new plugin for Eleventy that renders your Lit components as static HTML during your Eleventy build, and lets you hydrate them after your JavaScript loads. This is pretty nice, as out comes Declarative Shadow DOM-compatible which Chromium-based browsers can render, while …
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Bento is an easy to use component library that helps you achieve a great page experience. Included components are components (such as a Gallery, Accordion, Carousel, …), 3rd party embeds (Facebook, Instagram, …), text-related utilities, etc. The components themselves are (mostly) available as Web Component or a React Functional Component. An Instagram embed for example …
<md-block>
To render Markdown on web pages, Lea Verou created <md-block>. It’s a zero-dependency Custom Element that, unlike other solutions, renders the content in the light DOM which allows you to style the output easily. There are many web components these days to render Markdown to HTML. However, all render the resulting Markdown in Shadow DOM, …
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“Web Component DevTools” is a Chrome Extension for Chrome DevTools that adds support for Web Components / Custom Elements. Web Component DevTools is aimed at all developers working with Web Components. The tooling provided creates a new Chrome Devtools panel, which allows a quick look at the custom elements on the current page, and enables …
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<tab-container> Custom Element — An Accessible Tab Container Element with Keyboard Support
Built by GitHub is <tab-container>, a Custom Element that defines an accessible tab container element with keyboard support and that also follows the ARIA best practices guide on tabs. Upon importing the package it will register the Custom Element, so you can use it immediately: <tab-container> <div role="tablist"> <button type="button" role="tab" aria-selected="true">Tab one</button> <button type="button" …
