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Posted by cwdjrxyz on 01/26/06 00:02
John Salerno wrote:
> So is there an actual .xhtml extension? All the XHTML pages I've seen
> still have an .html extension, so does that mean they are being served
> as HTML 4?
Yes there is a .xhtml and also a .xml extension, but you may have to
define these on your server if they are not installed there. For
example, on the Unix Apache server I use, I go to the control panel,
click on the mime icon, and in the extension text box enter ".xhtml"
and in the mime type box enter "application/xhtml+xml". This may not be
quite as easy to do on other types of servers are at some hosts.You
will find both of these extension - mime type pairs mentioned at newer
listings of mime types.
For examples see: http://www.cwdjr.info/extensions/xhtml11.xhtml ,
http://www.cwdjr.info/extensions/xhtml11.xml ,
http://www.cwdjr.info/extensions/html401strict.html ,
http://www.cwdjr.info/extensions/auto.php .
You will find that the Mozilla family browsers(Firefox, Netscape,
Mozilla) and Opera like the .xhtml and .xml extensions, but IE6 does
not and will not display the page. The page with the .php extension
makes use of the server/browser exchange of information before any code
is downloaded. If you look on the xhtml aware browsers mentioned above,
you can see from the source code that what they receive is xhtml. If
you use an IE6 and view the source, you will see that it gets html 4.01
strict. However you would not have to use this as the option. You could
even use a very early form of html, although I do not know why one
would wish to do so.
So after you view the page served as .xhtml on the browsers mentioned
and consider that perhaps 80 to 90+ percent of browsers are IE, you
need no help from me to decide why the extension .xhtml is seldom used
except in a controlled network situation or if you serve both a true
xhtml and a html page. If you just write your page in perfect xhtml 1.1
and serve it as something.html, it is just served as html, which you
can easily see by viewing it on IE6 where it will display just fine -
if it had been true xhtml, it would not display at all.
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