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Maybe You Don’t Need a Date Picker | Adrian Roselli

In some situations, a date picker is overkill:

I have relied on plain text inputs as date fields with custom validation for the site, typically using the same logic on the client and the server. For known dates — birthdays, holidays, anniversaries, etc — it has tested well.

The Simplest Way to Load CSS Asynchronously | Filament Group, Inc.

Scott re-examines the browser support for loading everything-but-the-critical-CSS asynchronously and finds that it might now be as straightforward as this one declaration:

<link rel="stylesheet" href="/path/to/my.css" media="print" onload="this.media='all'">

I love the fact the Filament Group are actively looking at how deprecate their loadCSS polyfill—exactly the right attitude for polyfills in general.

Initial thoughts on standardizing form controls | Greg Whitworth

Greg has done a lot of research into developer frustrations with customising form controls.

My current thinking in this space, and I know some folks will find this controversial, but I think we should completely standardize in-page form controls with no limitations on their styling capabilities. What do I mean by in-page controls? I am referring to any form control or component that is rendered within the content process. This standardization would include the sub-parts and their related states and how these are exposed (probably through CSS psuedo classes or HTML attributes). This will enable the shadow-dom to be encapsulated while providing web developers with a consistent experience to adjust to match their brand and needs of their site/application.

User Inyerface - A worst-practice UI experiment

It’s all fun and games until you realise that everything in here was inspired by actual interfaces out there on the web.

How Google Pagespeed works: Improve Your Score and Search Engine Ranking

Ben shares the secret of SEO. Spoiler: the villain turns out to be Too Much JavaScript. Again.

Time to Interactive (TTI) is the most impactful metric to your performance score.

Therefore, to receive a high PageSpeed score, you will need a speedy TTI measurement.

At a high level, there are two significant factors that hugely influence TTI:

  • The amount of JavaScript delivered to the page
  • The run time of JavaScript tasks on the main thread

The Crushing Weight of the Facepile—zachleat.com

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

When should you be using Web Workers? — DasSur.ma

Although this piece is ostensibly about why we should be using web workers more, there’s a much, much bigger point about the growing power gap between the devices we developers use and the typical device used by the rest of the planet.

While we are getting faster flagship phones every cycle, the vast majority of people can’t afford these. The more affordable phones are stuck in the past and have highly fluctuating performance metrics. These low-end phones will mostly likely be used by the massive number of people coming online in the next couple of years. The gap between the fastest and the slowest phone is getting wider, and the median is going down.

Language and the Invention of Writing | Talking Points Memo

Language is not an invention. As best we can tell it is an evolved feature of the human brain. There have been almost countless languages humans have spoken. But they all follow certain rules that grow out of the wiring of the human brain and human cognition. Critically, it is something that is hardwired into us. Writing is an altogether different and artificial thing.

Designing for actual performance by Adam Silver

This is something I’ve been thinking about a lot lately. The justification for single page apps feels like circular thinking to me. A JavaScript framework is needed to avoid full page refreshes because full page refreshes are expensive because that means assets will be reloaded …assets like the JavaScript framework that only exists to avoid the full page refresh.

This is how it goes. We put a load of shit into a single web page. This makes the page slow. Slow to load, slow to render. Slow.

Instead of getting rid of the shit, we blame the page refresh.

Self-Host Your Static Assets – CSS Wizardry

Trust no one! Harry enumerates the reason why you should be self-hosting your assets (and busts some myths along the way).

There really is very little reason to leave your static assets on anyone else’s infrastructure. The perceived benefits are often a myth, and even if they weren’t, the trade-offs simply aren’t worth it. Loading assets from multiple origins is demonstrably slower.

Characteristics of a Strong Performance Culture | TimKadlec.com

Tim looks at the common traits of companies that have built a good culture of web performance:

  1. Top-down support
  2. Data-driven
  3. Clear targets
  4. Automation
  5. Knowledge sharing
  6. Culture of experimentation
  7. User focused, not tool focused

Few companies carry all of these characteristics, so it’s important not to get discouraged if you feel you’re missing a few of them. It’s a process and not a quick one. When I’ve asked folks at companies with all or most of these characteristics how long it took them to get to that point, the answer is typically in years, rarely months. Making meaningful changes to culture is much slower and far more difficult than making technical changes, but absolutely critical if you want those technical changes to have the impact you’re hoping for.

The Bit Player

Ooh! A documentary on Claude Shannon—exciting!

I just finished reading A Mind At Play, the (very good) biography of Claude Shannon, so this film feels very timely.

Mixing contemporary interviews, archival film, animation and dialogue drawn from interviews conducted with Shannon himself, The Bit Player tells the story of an overlooked genius who revolutionized the world, but never lost his childlike curiosity.

Web Bloat Score Calculator

Page web bloat score (WebBS for short) is calculated as follows:

WebBS = TotalPageSize / PageImageSize

Yes, this is a tongue-in-cheek somewhat arbitrary measurement, but it’s well worth reading through the rationale for it.

How can the image of a page be smaller than the page itself?

Unraveling The JPEG

A deep, deep, deep dive into the JPEG format. Best of all, it’s got interactive explanations you can tinker with, a la Nicky Case or Bret Victor.

Test the impact of ads and third party scripts

This is a very useful new feature in Calibre, the performance monitoring tool. Now you can get data about just how much third-party scripts are affecting your site’s performance:

The best way of circumventing fear and anxiety around third party script performance is to capture metrics that clearly articulate their performance impact.

Progressive Font Enrichment: reinventing web font performance | Responsive Web Typography

Jason describes the next big thing in web typography: streaming fonts!

…to enable the ability for only the required part of the font be downloaded on any given page, and for subsequent requests for that font to dynamically ‘patch’ the original download with additional sets of glyphs as required on successive page views—even if they occur on separate sites.

Naming things to improve accessibility

Some good advice from Hidde, based on his recent talk Six ways to make your site more accessible.

Norbert Wiener’s Human Use of Human Beings is more relevant than ever.

What would Wiener think of the current human use of human beings? He would be amazed by the power of computers and the internet. He would be happy that the early neural nets in which he played a role have spawned powerful deep-learning systems that exhibit the perceptual ability he demanded of them—although he might not be impressed that one of the most prominent examples of such computerized Gestalt is the ability to recognize photos of kittens on the World Wide Web.

How I failed the <a>

I think the situation that Remy outlines here is quite common (in client-rehydrated server-rendered pages), but what’s less common is Remy’s questioning and iteration.

So I now have a simple rule of thumb: if there’s an onClick, there’s got to be an anchor around the component.

Preload, prefetch and other link tags: what they do and when to use them · PerfPerfPerf

Following on from Harry’s slides, here’s another round-up of thoserel attribute values that begin with pre.