This is a bit theoretical but I am unable to find out what is the % of users with Javascript disabled on their computer.
We are creating massive second-hand car portal with focus on speed and user experience. Site as such will work just fine with Javascript disabled but for new car insertion and specialised search filters we demand JS and AJAX.
Is it safe to consider usage of Javascript to be safe these days with people running Facebook, Twitter, Myspace and enjoying JS/AJAX technology? Looking at our stats from other website most people have already converted to IE7 (from IE6) with IE8 growing up quickly, then Firefox 3.6/4.0, Chrome 10 and Safari. All these supporting Javascript by default.
You opinions?
For me that’s the key thing right there. The basics of the site will work without JavaScript, but if you want to do things like list cars or do fancy search filters, you have to use JavaScript. To me, that’s not a bad balance in 2011, no. Important that the site work (in terms of displaying information already held) without JavaScript, but it’s fine to require JS for some features. Be sure to degrade nicely there, too, with a nice message telling them why they can’t do those things and how to fix that.