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What difference does using the XHTML standard really make?
I enclose my HTML attributes in quotes - or at least when I remember, I do!
I always provide a matching close tag to go with each opening tag - except when I forget to do so, or am in a hurry
I make sure I provide an alt
attribute with each image - although sometimes I really don't know what I would say in such a tag, so I skip it
If I need an & character, I encode it as & - mind you, when I cut and paste I may miss some!
What difference does it really make to the people viewing my pages if I've got of few of these transgressions?
It was pointed out to me the other day that one of the sites I looked after didn't conform to the XHTML transitional standard in one area of the page, and there was also a specific user problem being reported. Nad it's very nice to have a "we confirm" logo there. So I took the opportunity to add a poll to the site, for regular users, asking if the changes I had made (which cleared 96 errors and 1 warning!) had made any difference to users.
I'm going to conclude that the exercise was
worth doing, as it gives me a nice warm feeling. It will make things better for the occasional person. It's suggested that it will now render faster (not sure if I believe that). It stops people telling me that can't see my page because the HTML is broken (even if the reason they can't see it is something else - like our site is blocked at their work place because it's too good and they spend too long with us). And it probably help our search engine ranking - the cleaner the code, the easier for the search engine to understand it, and the more professional it looks. (written 2009-06-18, updated 2009-06-22)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesA301 - Web Application Deployment - XML, DTD, XSLT, XHTML and More 
Adding retrospective ALT attributes to IMG - (2009-12-28) 
Handling XML in Perl - introduction and early examples - (2009-08-27) 
XML, HTML, XHTML and more - (2008-11-23) 
The HTML++ Metalanguage - (2007-01-22) 
Easy feed! - (2006-03-21)Q625 - Object Orientation and General technical topics - HTML for Web Application Authors 
Six languages in one file - an HTML++ web page - (2010-08-10)W502 - Web and Intranet - HTML Document Anatomy 
The VERY basics of a web page ... and web site - (2013-03-09) 
How big is a web page these days? Does the size of your pages matter? - (2011-12-26) 
Tags used in writing this blog - (2011-11-12) 
Redirecting to your main domain for correct security keys - (2010-03-13) 
Alternative URLs using % symbol encoding - (2008-09-27) 
All the special characters in HTML ... - (2007-12-07) 
Getting the community on line - some basics - (2007-11-13) 
Updating a page strictly every minute (PHP, Perl) - (2007-05-14) 
HTML - example of a simple web page - (2007-04-24) 
Positioning with Cascading Style Sheets - (2006-12-16) 
Strikingly busy - (2006-09-06)W601 - Structure of Networks and Webs 
What does an browser understand? What does an HTML document contain? - (2008-09-15)
Some other Articles
Bluegrass comes to MelkshamPublic Transport from London to Melksham, WiltshireGetting home from MelkshamA day in the life of a hotelierWhat difference does using the XHTML standard really make?Client side (Applet) and Server side (Servlet) Graphics in JavaWhat should a web site cost you?Changing a variable behaviour in Perl - tieingSo what is this thing called Perl that I keep harping on about?Perl references - $$var and \$var notations
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