| GitHub | https://github.com/jakearchibald |
map.getOrInsertComputed is newly baseline! It's a small feature, but I've found it pretty useful. Here's how it works.
Full docs and polyfills on MDN https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap/getOrInsertComputed
... and we can announce our final three speakers:
@Meyerweb the father of CSS testing and documenting
@jaffathecake (Mozilla), returning to conferences near you
@csswizardry who's going to talk about his recent article about containment
See you there!
At least two implementers are interested (and none opposed): Mozilla Google Tests are written and can be reviewed and commented upon at: … Implementation bugs are filed: Chromium: … Gecko...
85% of tickets have been sold. We're exactly ONE month away.
Celebrating ten years of All Day Hey! with our final conference. Help us go out with a bang and join on a journey through new techniques, accessibility, web animation, and human connection in a world of increasingly weird and wonderful AI.
Tickets and more info:
https://heypresents.com/conferences/2026
Nice to see excitement around the proposed html-in-canvas feature, but remember you can already put canvas behind/atop HTML elements.
The benefits of this new feature are:
➡️ Readbacks (eg sending to a VideoEncoder)
➡️ Showing HTML on non-planar shapes
➡️ Using shaders on HTML
I've been playing around with Chrome's experimental HTML-in-Canvas API (I use it to create my videos), and I wanted to see if I could make text-selection work on a curved surface by moving the underlying element around on pointermove. It works pretty well!
Live demo: https://random-stuff.jakearchibald.com/apps/curved-markup/ (needs Chrome Canary with the canvas-draw-element flag.
Source: https://github.com/jakearchibald/random-stuff/blob/main/apps/curved-markup/src/App/index.tsx#L113
Can you tell CSS from BS? I tried, and it's hard.
Firefox for Web Developers
CSS Day
Hey! Presents