AddyOsmani.com - Preload late-discovered Hero images faster
Did you know there’s an imagesrcset attribute you can put on link rel="preload" as="image" (along with an imagesizes attribute)?
I didn’t. (Until Amber pointed this out.)
Don’t Use The Placeholder Attribute — Smashing Magazine
A lot of the issues here are with abuses of the placeholder attribute—using it as a label, using it for additional information, etc.—whereas using it quite literally as a placeholder can be thought of as an enhancement (I almost always preface mine with “e.g.”).
Still, there’s no getting around that terrible colour contrast issue: if the contrast were greater, it would look too much like an actual pre-filled value, and that’s potentially worse.
Related links
A microdata enhanced HTML Webcomponent for Leaflet | k-nut — Blog
Here’s a nice HTML web component that uses structured data in the markup to populate a Leaflet map.
Personally I’d probably use microformats rather than microdata, but the princple is the same: progressive enhancement from plain old HTML to an interactive map.
drab
This looks like a handy collection of HTML web components for common interface patterns.
drab does not use the shadow DOM, so you can style content within these elements as usual with CSS.
HTML Web Components on the Server Are Great | Scott Jehl, Web Designer/Developer
Scott has written a perfect description of HTML web components:
They are custom elements that
- are not empty, and instead contain functional HTML from the start,
- receive some amount of progressive enhancement using the Web Components JavaScript lifecycle, and
- do not rely on that JavaScript to run for their basic content or functionality.
Light-DOM-Only Web Components are Sweet – Frontend Masters Boost
The main reason I’m so hot on Light DOM is that I find the styling story of Web Components using Shadow DOM annoying.
Related posts
My approach to HTML web components
Naming custom elements, naming attributes, the single responsibility principle, and communicating across components.
Netlify redirects and downloads
How to use HTML’s `download` attribute even if you’re storing your files on S3.
Displaying HTML web components
You might want to use `display: contents` …maybe.
button invoketarget=”share”
An alternate route to a declarative version of the Web Share API.
Lost in calculation
A lazy option for responsive images is at hand.