HTML5 Browser Compliance

type=	HTML5 Attribute List   [An empty grey box means not applicable, a red/white TYPE means not implemented]
	accept	alt	auto complete	auto focus	checked	form action	form enctype	form method	form no validate	form target	height	list	max	max length	min	multiple	pattern	place holder	read only	required	size	src	step	width
button																									button
checkbox																									checkbox
color																									color
date																									date
datetime																									datetime
datetime-local																									datetime-local
email																									email
file																									file
hidden																									hidden
image																									image
month																									month
number																									number
password																									password
radio																									radio
range																									range
reset																									reset
search																									search
submit																									submit
tel																									tel
text																									text
time																									time
url																									url
week																									week

Element	Support	Notes
<audio>	No
<canvas>	No
<command>	No
<datalist>	No
<details>	No
<device>	No
<form>	Yes
<iframe>	Yes
<meter>	No
<output>	No
<progress>	No
<time>	No
<video>	No

Feature	Support
ContentEditable Attribute	No
Cross-document Messaging	No
Drag & Drop	No
Geolocation	No
History	No
Local Storage	No
Microdata	No
Offline Web Applications	No
Scalable Vector Graphics (SVG)	No
Server-sent Events	No
Session Storage	No
Web Simple DB	No
Web SQL Database	No
Web Sockets	No
Web Workers	No
Undo	No

This page is the result of my poking into HTML5 to see what was new vs: older versions of HTML. I relied heavily upon Mark Pilgrim's excellent book: HTML5: Up & Running, the Modernizr HTML5 detection library, and the time-saving jQuery library. I won't guarantee it's perfect, but it is as accurate as I could make it with a full day's effort.

I arbitrarily assigned a score to your browser based upon taking away points for NOT implementing HTML5 features. Missing <input> types cost 10 points. Missing attributes cost 1 point. Most missing elements and other features (e.g. Geolocation) cost 10 points as well, but I made <audio> and <video> each worth 20 points as I thought they were particularly valuable and important.

validator.w3.org says this page validates without errors as HTML5 though warns that HTML5 is not yet a static target. It also gives a thumbs-up to the CSS though some of the included stuff gets a bunch of warnings.

H Marc Lewis — September, 2010