Tags: observer

Offloading JavaScript With Custom Properties: HeydonWorks

With classes, we can send CSS static values but with custom properties we can send dynamic ones, which is a major shift in the way we can style state. This is something that has been true for some time—and is extremely well supported—but sometimes it takes solving a small real-world problem to make you appreciate the value of it.

I think we still haven’t come to fully appreciate the superpower of custom properties: dynamic values that are shared between CSS and JavaScript.

How Web Content Can Affect Power Usage | WebKit

The way you build web pages—using IntersectionObserver, for example—can have a direct effect on the climate emergency.

Webpages can be good citizens of battery life.

It’s important to measure the battery impact in Web Inspector and drive those costs down.

The Crushing Weight of the Facepile—zachleat.com

Using IntersectionObserver to lazy load images—very handy for webmention avatars.

Responsive Components: a Solution to the Container Queries Problem — Philip Walton

Here’s a really smart approach to creating container queries today—it uses ResizeObserver to ensure that listening for size changes is nice and performant.

There’s a demo site you can play around with to see it in action.

While the strategy I outline in this post is production-ready, I see us as being still very much in the early stages of this space. As the web development community starts shifting its component design from viewport or device-oriented to container-oriented, I’m excited to see what possibilities and best practices emerge.

russellgoldenberg/scrollama: Scrollytelling with IntersectionObserver.

This looks like a handy JavaScript library for scroll-based events. But “scrollytelling?” No. Just …no.

Bad Science » Madeleine McCann, the Observer, and their special magic quantum DNA box (with secret energy source)

I've said it before and I'll say it again: the Bad Science blog deserves a medal.