[mathias]

When did we stop caring about FOUC and client-side performance?

[leaverou]

FOUC? It's only some CSS3 that won't display until DOM load, not the whole styling. As for the performance, I'm pretty sure you're just guessing, and haven't done any testing.

[mathias]

> As for the performance, I'm pretty sure you're just guessing, and haven't done any testing.

Have you?

Are you saying it’s not necessarily slower to use JS to generate CSS on the client-side, compared to just serving up the CSS with all prefixes included in the first place? Do we really need a test case for that? I’m not even talking about your code or anything; just the general idea.

In general, it’s a bad idea to rely on client-side JavaScript for something that can be done without. PrefixFree is no exception.

I can see how PrefixFree can be useful for quick demos or during presentations (the way you use it is awesome!) but when you’re gonna post an article like this on a site like Smashing Magazine _people are gonna use it_ in production as well.

I love your work Lea, you know I do; I just don’t agree with the philosophy behind this particular project.

[ck2]

Exactly - this makes about as much sense as the javascript based "busy" indicator (instead of gif).

Stylesheets are cached and a one-time hit for new visitors - this method has to reiterate on every single page load.

[evlapix]

I understand your concerns, but in this case I think extent of usage and progressive enhancement are the real considerations.