Things you can do with HTML but not XHTML

News to me...
http://www.sitepoint.com/forums/showthread.php?t=393445
Create parts of the page dynamically with JavaScript while the document is still loading (e.g., using document.write()).

but in XHTML you get CDATA, which is handy...

read this when time... kinda wtf I thought XHTML was just better... maybe its just too late at night and I've forgotten.

more from that article...

Is XHTML supported by all browsers?
No. Only a few mainstream browsers support XHTML, like Opera, Firefox and Safari.

Most importantly, Internet Explorer does not support XHTML at all.

If you follow certain guidelines you can serve XHTML documents as text/html (see below). That means the document will be seen as HTML, which all browsers can handle. Virtually all browsers have a parser bug that ignores the slash in self-closing tags.


Should I use XHTML or HTML?
That depends on who you ask. There are a number of technical issues with this question, which preclude a simple and short answer. In reality, the latest W3C recommendation with widespread support is HTML 4.01. Unless you actually need any of the features that XHTML offers over HTML, there is no technical reason to use XHTML.

In order to actually benefit from using XHTML, you really need to understand the fundamental differences between XHTML and HTML. Such a site will only be available to a small minority of the surfing population, however.

Some web designers and developers prefer XHTML's syntax rules over HTML's. By following certain guidelines, you can use this syntax without technically using XHTML at all (see below). There are a number of potential pitfalls with this approach, but it is a possible way forward for those who absolutely want to type
instead of
.