1. The main discussion here was about HTML5 based apps using a native web-view app wrapper. That makes "OS version" and "browser version" identical, and puts you in an identical position to native apps in terms of number of platforms to deal with.
2. Even if you're dealing with multiple browser versions, there isn't very much difference between how a given version of a modern browser behaves under different OSes. And if a page works correctly in an old version of a browser, it is very unusual for it to start working incorrectly in a newer version of that browser.
3. Maintaining a single code base with special cases for different platforms is way easier than maintaining multiple disparate code bases. It's the old DRY principle.
The fact is this: writing an app and supporting multiple OSes (even multiple versions of the same OS) is hard. Doing so while making everything pixel-exact across different platforms is really hard, and usually pointless. But the idea that it would be somehow easier when maintaining entirely separate code bases is ludicrous.
>1. I don't understand wasn't the HTML5 model the portability everywhere? So why the constraint to mobile devices now?
Ideally, HTML5 apps would automatically be completely portable everywhere, but that ideal isn't realistic. HTML5 is still great for simplifying porting (which is not to say that it is without disadvantages) because it gives you a single code base that behaves nearly identically everywhere, and then you have to tweak it. Constrain your problem to a couple of mobile browsers, and the number of tweaks drops dramatically.
Now I understand the draw of simply maintaining separate code bases. It's the same draw as the urge developers have to rewrite a project from scratch. It feels like starting with a clean slate will be more efficient than hunting down and eliminating every blemish. But that's an illusion. Working from a clean slate, you'll still be tweaking out blemish — it'll just take longer before you even have the privilege of thinking about them.
>2. It is always fun to see junior developers learn the quirks of CSS across browser versions of the same browser.
Oh, they're there. But in aggregate, they aren't as bad as working across different native platforms.
>Have fun talking to our Fortune 500 customers doing pixel counting on web applications, before signing the pay-check.
Yes, I realize that some clients require it even though it's usually pointless. Some companies have more money than sense, after all. My point was that it's hard no matter how you develop the app.
A few points:
1. The main discussion here was about HTML5 based apps using a native web-view app wrapper. That makes "OS version" and "browser version" identical, and puts you in an identical position to native apps in terms of number of platforms to deal with.
2. Even if you're dealing with multiple browser versions, there isn't very much difference between how a given version of a modern browser behaves under different OSes. And if a page works correctly in an old version of a browser, it is very unusual for it to start working incorrectly in a newer version of that browser.
3. Maintaining a single code base with special cases for different platforms is way easier than maintaining multiple disparate code bases. It's the old DRY principle.
The fact is this: writing an app and supporting multiple OSes (even multiple versions of the same OS) is hard. Doing so while making everything pixel-exact across different platforms is really hard, and usually pointless. But the idea that it would be somehow easier when maintaining entirely separate code bases is ludicrous.