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All mainstream browsers support JS and CSS, the question is how recent and what specific features. "CSS3" really means a whole ton of features and support varie
by mmahemoff 14y ago
All mainstream browsers support JS and CSS, the question is how recent and what specific features. "CSS3" really means a whole ton of features and support varies.
Your typical "CSS3 demo" on HN will work well on Opera, Firefox, Chrome, Safari. It should work on IE10, has a 50/50 chance of working on IE9, and probably won't work on IE8 and below.
Check out http://caniuse.com/ http://caniuse.com/ to see which features are supported on each browser.
One other thing to mention is that users might turn off JavaScript support and screenreaders will have issues with some things JavaScript apps do. It was much more of an issue 5-10 years ago than it is today though.