Browser support for URLs beginning with double slash

For some reason, I keep forgetting if double slash URLs are supported in older browsers or not.  Maybe if I post the answer from this StackOverflow question here, I will remember it myself next time:

This behavior was part of RFC 1808 (Section 4) which is about 16 years old, so every major browser should (and does) support this.

Sadly, there’s a bug with IE7 and -8 that will make them download the resources twice if a protocol-relative URL is used on a link or @import – which shouldn’t be a big problem, but is ugly and should be kept in mind.

So, that might be a problem for the CSS, but the JavaScript and images should work just fine.

Firefox 29.0

It’s been a long time since I stopped being a Firefox fan.  Back when it was the only full featured open source browser, it was awesome.  But then the development slowed down, the browser started eating memory like a starving Godzilla, and daily application crashes became a norm.  On top of it, Google Chrome came out.  It was faster, cleaner, and much more stable.  It lacked the functionality bits and pieces, but all that was nothing compared to the speed, polish, and stability.  And as years went by, Firefox, it seemed, didn’t even try to catch up.

firefox-29.0

Today, my Fedora updates pulled in brand new and shiny Firefox 29.0 and the first time in years I am actually liking it.  The first thing that stands out immediately is the much cleaned up user interface.  The tabs look slick and main menu is moved into a single icon to the upper right corner, much like Google Chrome has it.  The menu is also reworked into a customizable area of icons, rather than nested text items.  The second important addition is the browser synchronization.  Once you create an account and enable the sync, your tabs, passwords, history, and forms will automatically synchronize between different machines.  That’s a very handy feature for those who have different home and office computers or some other scenario with multiple devices.

There is still a long road for the Firefox browser to catch up with Google Chrome though.  Two things that come to mind are the performance and the ability to install/uninstall extensions without restarting the browser.  But I sure appreciate all the hard work that went into this version.  After all, open competition pushes all products and the end user ultimately benefits.  It’s been a long while since there was a feeling of competition in the browser marketplace.  It’s good to catch a scent of that again.