how to detect if browser supports xhtml

[kyoshu]

to detect if browser supports xhtml i use:

#!/usr/bin/perl -wT
use strict;
use CGI;
my $q = new CGI;
if ( grep { /application\/xhtml\+xml/ } $q->Accept ) { print "Content-
+type: application/xhtml+xml\n\n"; }
else { print "Content-type: text/html;Charset=utf-8\n\n"; }
print 'some xhtml';
...

is there any more advanced way? module, or how you do it?

20050602 Edit by ysth: remove pre tags, add code tags

[gellyfish]

As far as it goes, that's a perfectly reasonable way of doing it, however I would counsel you to forget about trying to detect whether a browser explicity states it will accept XHTML as some (such as IE) don't advertised themselves as accepting 'application/xhtml+xml' will display XHTML if sent with an text/html content-type but don't display it properly if sent with the 'application/xhtml+xml' type. On the other hand there are others (such as galeon) that do advertise the xhtml content-type but do not display it correctly (in the absence of a stylesheet).

This really goes back to the old browser detecting thing, which was similarly a bad idea. Produce your output to the standard and test with as many browsers as you can, b ut don't try making different output for them as you will never be able to keep up.

/J\

[Joost]

Don't send XHTML as text/html. It won't work now and it wont work in the future either. See http://www.hixie.ch/advocacy/xhtml

Update: AFAIK, if you want to support Internet Explorer, just forget about using XHTML.