I'm beginning some work on some new Tridion GUI extensions and I'll like to use CSS3 and some HTML5 features. I'm guessing 2011 was scoped for IE7, but is that true of 2013? Does Tridion use any polyfills, or feature detection?
The following web browsers are listed as supported in the documentation for SDL Tridion 2013, under Content Manager Explorer prerequisites
- Internet Explorer 10.0
- Internet Explorer 9.0
- Safari 6.0 for the Mac
- Google Chrome, latest version
- Mozilla Firefox, latest version
I'm not aware of any polyfills or feature detection in use. This doesn't mean that you can't use them in extensions yourself of course :)