User Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0) Gecko/20100101 Firefox/10.0 Build ID: 20120129021758 Steps to reproduce: I tried code examples in the following page http://www.w3schools.com/html5/att_input_type.asp They are about <input type="XXX" /> Actual results: Some of the newly added types are not supported, they fall back to "text" type. The page also documents the current supporting state of Firefox and other browsers. I verified the state of Firefox using Firefox 10.0 Expected results: I guess we'd reference HTML5 specification http://www.w3.org/TR/html5/states-of-the-type-attribute.html#states-of-the-type-attribute Or we can just reference another browser, say, Google Chrome or Opera.

And as a side note, don't use w3schools.com as reference, that site is problematic in many ways http://w3fools.com/