@jfbrennan

Pass Astro server data to the client

Nov 18, 2025 · 1 min read · The Astro docs provide an example for passing server data to the client. That’s not quite as robust as what I wanted for my requirements, so here’s a slightly different approach: <!-- `account` is a variable defined in "front matter", i.e. Astro serv...

When Should I Use a Web Component?

Jun 15, 2024 · 13 min read · The biggest tech companies with the biggest websites are using Web Components and yet very few frontend engineers know how to build them and even fewer know when. I think it's because developers aren't sure where Web Components can fit in the crowded...

So Many Native JavaScript Date Formats

Apr 28, 2024 · 6 min read · I don't know about you, but I spend most of my time dreaming about the new Temporal API. It's going to make working with dates so much better in so many ways. But for now we have Date and Intl and together they actually offer a lot of date and time f...

Custom local domain solves CORS and other issues

Apr 15, 2024 · 3 min read · Problem http://localhost:3000 can’t call your remote API because of browser-enforced limitations involving CORS, cookie sharing, and HTTPS. Solution Set up local.yourdomain.com on your dev machine so your browser will successfully call your remote se...

PPavel commented

Web Component Styles Are (mostly) Encapsulated Without Shadow DOM

Apr 8, 2024 · 2 min read · Shadow DOM is often thought of as the one and only way to create scoped styles for a Web Component. It's not. Prefixed Tags Scope Styles Web Components, i.e. Custom Elements, require a prefixed tag. For example, a "foo" Custom Element would be define...