Tags: sources

At the end of next week, I will sally forth to California. I’m going to wend my way to San Francisco where I will be speaking at An Event Apart.

I am very much looking forward to speaking at my first in-person AEAs in exactly three years. That was also in San Francisco, right before The Situation.

I hope to see you there. There are still tickets available.

I’ve put together a brand new talk that I’m very excited about. I’ve already written about the prep for this talk:

So while I’ve been feeling somewhat under the gun as I’ve been preparing this new talk for An Event Apart, I’ve also been feeling that the talk is just the culmination; a way of tying together some stuff I’ve been writing about it here for the past year or two.

The talk is called Declarative Design. Here’s the blurb:

Different browsers, different devices, different network speeds…designing for the web can feel like a never-ending battle for control. But what if the solution is to relinquish control? Instead of battling the unknowns, we can lean into them. In the world of programming, there’s the idea of declarative languages: describing what you want to achieve without specifying the exact steps to get there. In this talk, we’ll take this concept of declarative programming and apply it to designing for the web. Instead of focusing on controlling the outputs of the design process, we’ll look at creating the right inputs instead. Leave the final calculations for the outputs to the browser—that’s what computers are good at. We’ll look at CSS features, design systems, design principles, and more. Then you’ll be ready to embrace the fluid, ever-changing, glorious messiness of the World Wide Web!

If you’d a glimpse into the inside of my head while I’ve been preparing this talk, here’s a linkdump of various resources that are either mentioned in the talk or influenced it…

Declarative Design

• Declarative design on adactio.com
• Utopia by James Gilyead and Trys Mudford
• Every Layout by Heydon Pickering and Andy Bell
• Be the browser’s mentor, not its micromanager by Andy Bell
• Layout Land by Jen Simmons
• Designing Intrinsic Layouts by Jen Simmons on adactio.com

HTML

• A declarative Web Share API on adactio.com
• A polyfill for button type=”share” on adactio.com
• The reason for a share button type on adactio.com
• Share Button Type explainer on Github
• When should there be a declarative version of a JavaScript API? on adactio.com
• How to (not) make a button by Tomas Pustelnik

CSS

• The CSS Mindset by Max Böck
• Contextual Spacing For Intrinsic Web Design by Stephanie Eckles
• The CSS mental model by Peter Paul Koch
• CSS Forces by Tim Brown

Design Tools

• Our web design tools are holding us back by Vasilis van Gemert
• Traditional Web Design Process is Fundamentally Broken by Jason Grigsby
• Web Design Tool Wish List by Jason Grigsby
• Declarative Design Tools (archived) by Jem Gold

Design systems

• Declarative design systems on adactio.com
• Design systems thinking on adactio.com

History

• Cascading HTML style sheets — a proposal by Håkon Wium Lie, 1994
• A Dao of Web Design by John Allsopp, 2000
• Responsive Web Design by Ethan Marcotte, 2010

People

• Wolfgang Amadeus Mozart
• Miles Davis
• Tim Berners-Lee

I got an email recently from a young person looking to get into web development. They wanted to know what languages they should start with, whether they should a Mac or a Windows PC, and what some places to learn from.

I wrote back, saying this about languages:

For web development, start with HTML, then CSS, then JavaScript (and don’t move on to JavaScript too quickly—really get to grips with HTML and CSS first).

And this is what I said about hardware and software:

It doesn’t matter whether you use a Mac or a Windows PC, as long as you’ve got an internet connection, some web browsers (Chrome, Firefox, for example) and a text editor. There are some very good free text editors available for Mac and PC:

• Visual Studio Code
• Atom

For resources, I had a trawl through links I’ve tagged with “learning” and “html” and sent along some links to free online tutorials:

• Codebar tutorials
• HTML+CSS tutorial
• Marksheet, a free HTML and CSS tutorial
• Learn to code HTML and CSS
• Just starting out with CSS and HTML
• Interneting is hard (but it doesn’t have to be)
• Web design in four minutes
• The front-end developer handbook

After sending that email, I figured that this list might be useful to anyone else looking to start out in web development. If you know of anyone in that situation, I hope this list might help.

I gave a new talk at An Event Apart in Seattle yesterday morning. The talk was called Going Offline, which the eagle-eyed amongst you will recognise as the title of my most recent book, all about service workers.

I was quite nervous about this talk. It’s very different from my usual fare. Usually I have some big sweeping arc of history, and lots of pretentious ideas joined together into some kind of narrative arc. But this talk needed to be more straightforward and practical. I wasn’t sure how well I would manage that brief.

I knew from pretty early on that I was going to show—and explain—some code examples. Those were the parts I sweated over the most. I knew I’d be presenting to a mixed audience of designers, developers, and other web professionals. I couldn’t assume too much existing knowledge. At the same time, I didn’t want to teach anyone to such eggs.

In the end, there was an overarching meta-theme to talk, which was this: logic is more important than code. In other words, figuring out what you’re trying to accomplish (and describing it clearly) is more important than typing curly braces and semi-colons. Programming is an act of translation. Before you can translate something, you need to be able to articulate it clearly in your own language first. By emphasising that point, I hoped to make the code less overwhelming to people unfamilar with it.

I had tested the talk with some of my Clearleft colleagues, and they gave me great feedback. But I never know until I’ve actually given a talk in front of a real conference audience whether the talk is any good or not. Now that I’ve given the talk, and received more feedback, I think I can confidentally say that it’s pretty damn good.

My goal was to explain some fairly gnarly concepts—let’s face it: service workers are downright weird, and not the easiest thing to get your head around—and to leave the audience with two feelings:

1. This is exciting, and
2. This is something I can do today.

I deliberately left time for questions, bribing people with free copies of my book. I got some great questions, and I may incorporate some of them into future versions of this talk (conference organisers, if this sounds like the kind of talk you’d like at your event, please get in touch). Some of the points brought up in the questions were:

• Is there some kind of wizard for creating a typical service worker script for any site? I didn’t have a direct answer to this, but I have attempted to make a minimal viable service worker that could be used for just about any site. Mostly I encouraged the questioner to roll their sleeves up and try writing a bespoke script. I also mentioned the Workbox library, but I gave my opinion that if you’re going to spend the time to learn the library, you may as well spend the time to learn the underlying language.
• What are some state-of-the-art progressive web apps for offline user experiences? Ooh, this one kind of stumped me. I mean, the obvious poster children for progressive webs apps are things like Twitter, Instagram, and Pinterest. They’re all great but the offline experience is somewhat limited. To be honest, I think there’s more potential for great offline experiences by publishers. I especially love the pattern on personal sites like Una’s and Sara’s where people can choose to save articles offline to read later—like a bespoke Instapaper or Pocket. I’d love so see that pattern adopted by some big publications. I particularly like that gives so much more control directly to the end user. Instead of trying to guess what kind of offline experience they want, we give them the tools to craft their own.
• Do caches get cleaned up automatically? Great question! And the answer is mostly no—although browsers do have their own heuristics about how much space you get to play with. There’s a whole chapter in my book about being a good citizen and cleaning up your caches, but I didn’t include that in the talk because it isn’t exactly exciting: “Hey everyone! Now we’re going to do some housekeeping—yay!”
• Isn’t there potential for abuse here? This is related to the previous question, and it’s another great question to ask of any technology. In short, yes. Bad actors could use service workers to fill up caches uneccesarily. I’ve written about back door service workers too, although the real problem there is with iframes rather than service workers—iframes and cookies are technologies that are already being abused by bad actors, and we’re going to see more and more interventions by ethical browser makers (like Mozilla) to clamp down on those technologies …just as browsers had to clamp down on the abuse of pop-up windows in the early days of JavaScript. The cache API could become a tragedy of the commons. I liken the situation to regulation: we should self-regulate, but if we prove ourselves incapable of that, then outside regulation (by browsers) will be imposed upon us.
• What kind of things are in the future for service workers? Excellent question! If you think about it, a service worker is kind of a conduit that gives you access to different APIs: the Cache API and the Fetch API being the main ones now. A service worker is like an airport and the APIs are like the airlines. There are other APIs that you can access through service workers. Notifications are available now on desktop and on Android, and they’ll be coming to iOS soon. Background Sync is another powerful API accessed through service workers that will get more and more browser support over time. The great thing is that you can start using these APIs today even if they aren’t universally supported. Then, over time, more and more of your users will benefit from those enhancements.

If you attended the talk and want to learn more about about service workers, there’s my book (obvs), but I’ve also written lots of blog posts about service workers and I’ve linked to lots of resources too.

Finally, here’s a list of links to all the books, sites, and articles I referenced in my talk…

Books

• DOM Scripting, 2005
• Bulletproof Ajax, 2007
• Going Offline, 2018

Sites

• adactio.com
• Resilient Web Design
• jQuery
• The Prime Number Shitting Bear
• Ampersand
• Trivago
• Clearleft
• The Session
• Una Kravets
• Sara Soueidan
• dConstruct Archive

Progressive Web Apps

• What the heck is a “Progressive Web App”? Seriously. by Ben Halpern
• Building Progressive Web Apps by Diogo Cunha
• Before You Build a PWA You Need a SPA by Mark Muskardin
• Tweet by Jake Archibald
• What is a PWA by Salva de la Puente
• Naming Progressive Web Apps by Frances Berriman
• Progressive Web App Checklist by Google