I've been playing around with HTML5 (nice intro at Smashing Magazine) for a side project, and I wanted Visual Studio 2008 to stop telling me the new elements were not valid. So I created a new Validation Schema for Visual Studio 2008 that implements much of the HTML5 spec. I found some hints on how to do this in Visual Studio 2005 and went from there. Here's a pic of it in action giving you the attributes of of the new <source> tag under a new <video> tag:
Readme.txt
- There is a lot of confusion about HTML, XHTML, and mime-types. I've chose to go with a stricter XML-like syntax of closed tags and quoted attributes, rather than the looser HTML, so I called it "XHTML 5" although that doesn't really make it offically XHTML 5 until you do the rest of the research, work, and fun.
- This is not a 100% perfect implementation. There are bound to be different interpretations of what's "correct" HTML5 and you have until 2022 to get it right, so please don't worry about it too much.
What's Finished
- All the new elements in HTML5 have been added in the follow groupings
- structure: article, aside, footer, header, nav, section
- media: audio, video, source
- other: bb, canvas, command, datagrid, datalist, details, dialog, eventsource, figure, hgroup, keygen, mark, menu, meter, output, progress, time
- When new elements have custom attributes (such as height and width for video, I've tried to add those)
- I've also changed a few things like not requiring the type attribute on script blocks and allowing meta tags to have a charset attribute
- I've begun adding HTML5 events (ondrag, onplay, etc.) but have not completed all of them
- I am not sure how to add HTML5 style data- attributes, so those won't validate yet.
How to Use it
- Download XHTML Validation Schema for Visual Studio 2008
- Save it to C:\Program Files\Microsoft Visual Studio 9.0\Common7\Packages\schemas\html\
- Add the following to the Registry:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\9.0\Packages\{1B437D20-F8FE-11D2-A6AE-00104BCC7269}\Schemas\Schema 23]
"Friendly Name"="XHTML 5"
"URI"="http://schemas.microsoft.com/intellisense/xhtml5"
"File"="html\\xhtml5.xsd"
Note that you might need to change "Schema 23" to something else if you already have other non-default schemas installed. You just need to use the next available number in the list.
I hope you find it helpful. Please let me know if you end up using it and feel free to suggest updates or corrections.