Tags: compatibility

15

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Thursday, July 14th, 2022

Body Margin 8px | Miriam Eric Suzanne

I love this kind of spelunking into the history of why things are they way they are on the web!

Here, Detective Chief Inspector Suzanne tries to get to the bottom of why every browser has eight pixels of margin applied to the body element in the user-agent stylesheet.

Thursday, April 28th, 2022

Suspicion

I’ve already had some thoughtful responses to yesterday’s post about trust. I wrapped up my thoughts with a request:

I would love it if someone could explain why they avoid native browser features but use third-party code.

Chris obliged:

I can’t speak for the industry, but I have a guess. Third-party code (like the referenced Bootstrap and React) have a history of smoothing over significant cross-browser issues and providing better-than-browser ergonomic APIs. jQuery was created to smooth over cross-browser JavaScript problems. That’s trust.

Very true! jQuery is the canonical example of a library smoothing over the bumpy landscape of browser compatibilities. But jQuery is also the canonical example of a library we no longer need because the browsers have caught up …and those browsers support standards directly influenced by jQuery. That’s a library success story!

Charles Harries takes on my question in his post Libraries over browser features:

I think this perspective of trust has been hammered into developers over the past maybe like 5 years of JavaScript development based almost exclusively on inequality of browser feature support. Things are looking good in 2022; but as recently as 2019, 4 of the 5 top web developer needs had to do with browser compatibility.

Browser compatibility is one of the underlying promises that libraries—especially the big ones that Jeremy references, like React and Bootstrap—make to developers.

So again, it’s browser incompatibilities that made libraries attractive.

Jim Nielsen responds with the same message in his post Trusting Browsers:

We distrust the browser because we’ve been trained to. Years of fighting browser deficiencies where libraries filled the gaps. Browser enemy; library friend.

For example: jQuery did wonders to normalize working across browsers. Write code once, run it in any browser — confidently.

Three for three. My question has been answered: people gravitated towards libraries because browsers had inconsistent implementations.

I’m deliberately using the past tense there. I think Jim is onto something when he says that we’ve been trained not to trust browsers to have parity when it comes to supporting standards. But that has changed.

Charles again:

This approach isn’t a sustainable practice, and I’m trying to do as little of it as I can. Jeremy is right to be suspicious of third-party code. Cross-browser compatibility has gotten a lot better, and campaigns like Interop 2022 are doing a lot to reduce the burden. It’s getting better, but the exasperated I-just-want-it-to-work mindset is tough to uninstall.

I agree. Inertia is a powerful force. No matter how good cross-browser compatibility gets, it’s going to take a long time for developers to shed their suspicion.

Jim is glass-half-full kind of guy:

I’m optimistic that trust in browser-native features and APIs is being restored.

He also points to a very sensible mindset when it comes to third-party libraries and frameworks:

In this sense, third-party code and abstractions can be wonderful polyfills for the web platform. The idea being that the default posture should be: leverage as much of the web platform as possible, then where there are gaps to creating great user experiences, fill them in with exploratory library or framework features (features which, conceivably, could one day become native in browsers).

Yes! A kind of progressive enhancement approach to using third-party code makes a lot of sense. I’ve always maintained that you should treat libraries and frameworks like cattle, not pets. Don’t get too attached. If the library is solving a genuine need, it will be replaced by stable web standards in browsers (again, see jQuery).

I think that third-party libraries and frameworks work best as polyfills. But the whole point of polyfills is that you only use them when the browsers don’t supply features natively (and you also go back and remove the polyfill later when browsers do support the feature). But that’s not how people are using libraries and frameworks today. Developers are reaching for them by default instead of treating them as a last resort.

I like Jim’s proposed design princple:

Where available, default to browser-native features over third party code, abstractions, or idioms.

(P.S. It’s kind of lovely to see this kind of thoughtful blog-to-blog conversation happening. Right at a time when Twitter is about to go down the tubes, this is a demonstration of an actual public square with more nuanced discussion. Make your own website and join the conversation!)

Monday, March 7th, 2022

web-platform-tests dashboard

It’s great to see browsers working together to collectively implement a range of much-needed features.

These scores represent how browser engines are doing in 15 focus areas and 3 joint investigation efforts.

Sunday, August 8th, 2021

Chromium Blog: Increasing HTTPS adoption

At some point, you won’t be able to visit the first web page ever published without first clicking through a full-page warning injected by your web browser:

Chrome will offer HTTPS-First Mode, which will attempt to upgrade all page loads to HTTPS and display a full-page warning before loading sites that don’t support it. Based on ecosystem feedback, we’ll explore making HTTPS-First mode the default for all users in the future.

Monday, March 29th, 2021

Compat2021: Eliminating five top compatibility pain points on the web

Good to see Google, Mozilla, and Apple collaborating on fixing cross-browser CSS compatability issues:

  1. flexbox
  2. grid
  3. position: sticky
  4. aspect-ratio
  5. transforms

You can track progress here.

Monday, January 8th, 2018

Careful Now | CSS-Tricks

Even more concerning than browser-specific websites is seeing browsers ship non-standardized features just because they want them, not behind any vendor prefix or flag. There was a time when web developers would have got out the pitchforks if a browser was doing this, but I sense some complacency seeping in.

Wednesday, November 6th, 2013

Icon fonts, unicode ranges, and IE8’s compatibility mode

While doing some browser testing this week, Mark come across a particularly wicked front-end problem. Something was triggering compatibility mode in Internet Explorer 8 and he couldn’t figure out what it was.

Compatibility mode was something introduced in IE8 to try not to “break the web”, as Microsoft kept putting it. Effectively it makes IE8 behave like IE7. Why would you ever want to do that? Well, if you make websites exactly the wrong way and code for a specific browser (like, say, IE7), then better, improved browsers are something to be feared and battled against. For the rest of us, better, improved browsers are something to be welcomed.

Shockingly, Microsoft originally planned to have compatibility mode enabled by default in Internet Explorer 8. It was bad enough that they were going to ship a browser with a built-in thermal exhaust port, they also contemplated bundling a proton torpedo with it too. Needless to say, right-minded people were upset at that possibility. I wrote about my concerns back in 2008.

Microsoft changed their mind about the default behaviour, but they still shipped IE8 with the compatibility mode “feature”, which Mark was very much experiencing as a bug. Something in the CSS was triggering compatibility mode, but frustratingly, there was no easy way of figuring out what was doing it. So he began removing chunks of CSS, reducing until he could focus in on the exact piece of CSS that was triggering IE8’s errant behaviour.

Finally, he found it. He was using an icon font. Now, that in itself isn’t enough to give IE8 its conniptions—an icon font is just a web font like any other. The only difference is that this font was using the private use area of the unicode range. That’s the default setting if you’re creating an icon font using the excellent icomoon service. There’s a good reason for that:

Using Latin letters is not recommended for icon fonts. Using the Private Use Area of Unicode is the best option for icon fonts. By using PUA characters, your icon font will be compatible with screen readers. But if you use Latin characters, the screen reader might read single, meaningless letters, which would be confusing.

Well, it turns out that using assigning glyphs to this private use area was causing IE8 to flip into compatibility mode. Once Mark assigned the glyphs to different characters, IE8 started behaving itself.

Now, we haven’t tested to see if this is triggered by all of the 6400 available slots in the UTF-8 private use range. If someone wants to run that test (presumably using some kind of automation), ’twould be much appreciated.

Meantime, just be careful if you’re using the private use area for your icon fonts—you may just inadvertently wake the slumbering beast of compatibility mode.

Tuesday, October 9th, 2012

WebPlatform.org — Your Web, documented

A one-stop-shop for browser-compatibility information. This is MDN, HTML5 Rocks, and Quirksmode all rolled into one.

Monday, September 12th, 2011

Mobile HTML5 - compatibility tables for iPhone, Android, BlackBerry, Symbian, iPad and other mobile devices

This just launched at the Breaking Development conference: another site that uses the term HTML5 to include CSS and Ajax. Still, despite its inaccurate nomenclature, it’s a useful compatibility table of device support in mobile browsers.

Monday, August 9th, 2010

Surfin’ Safari - Blog Archive » The HTML5 Parsing Algorithm

The latest Webkit nightly includes the HTML5 parsing algorithm. Now it's a race between Firefox, Safari and Chrome to see which will be first (non-beta) browser to ship with the new parser.

Friday, February 13th, 2009

isolani - Web Standards: IE8 Blacklist: forcing standards rendering opt-in

Bend over 'cause Microsoft is about to stick it to us standards-savvy developers. Again.

Friday, August 29th, 2008

Microsoft breaks IE8 interoperability promise | The Register

Håkon is not happy with the default settings in IE8. Deep in the preferences, "Display intranet sites in Compatibility View" is checked.

Thursday, April 3rd, 2008

CSS Compatibility and Internet Explorer

A very handy table of CSS support for versions of Internet Explorer from 5 to 8. Note that IE8 Beta 1 is listed separately to IE8.0.

Thursday, December 20th, 2007

IEBlog : Internet Explorer 8 and Acid2: A Milestone

Great news from Redmond: IE8 passes the Acid2 test.

Tuesday, November 27th, 2007

W3C DOM Compatibility - HTML

PPK has once again been doing sterling work. He's updated the DOM compatibility chart and things are actually looking pretty good.