[jrumbut]

document.querySelector was not available in IE 6 and 7.

Dealing with those versions was where jQuery really earned its spot in the JS universe. It was a lot to remember where all the quirks were and the incantations to work around them.

[codeisawesome]

IE 6. Now that's a name I haven't heard in a long time...

[martin_a]

Just patched a problem in a WordPress site due to (now broken) support for IE7 two days ago. The elders of the Internet are still around. ;-)

[spicybright]

I'm so sorry. Do you want to talk about it? :P

[martin_a]

I'm not sure. It was kind of traumatic, but on the other hand it's a very old site, so it was obvious that there might be some dead bodies in the basement. Found one, ignored the others.

[jrumbut]

The IE 7 compatibility code broke the site in modern browsers, or did you really get a visitor on a Windows 98 machine?

[martin_a]

It was a bug in an old version of superfish.js which relied on a deprecated jQuery function to detect the browser. $.browser broke in the new(er/est) version of jQuery which is integrated in that site.

[user3939382]

The longer the better. What a neverending nightmare it was.