How W3Schools Was Converted To XHTML
W3Schools was converted from HTML to XHTML the weekend of 18. and 19.
December 1999, by Hege Refsnes and Ståle Refsnes.
To convert a Web site from HTML to
XHTML, you should be familiar with the XHTML syntax rules of the previous
chapters. The following steps were executed
(in the order listed below):
A DOCTYPE Definition Was Added
The following DOCTYPE declaration was added as the first line of every page:
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
Tip: Your pages must have a DOCTYPE declaration if you want them to validate as
Lowercase Tags And Attribute Names
Since XHTML is case-sensitive, and only accept lowercase
tags and attributes, a general "find-and-replace" function was executed to
replace all uppercase tags with lowercase tags. The same was done for
All Attribute Values Were Quoted
1.0 Recommendation states that all attribute values must be quoted, so every
page in W3Schools.com was checked to see that attribute values were quoted.
Empty Tags: <hr> , <br> and <img>
Empty tags are not allowed in XHTML. The <hr> and <br> tags
should be replaced with <hr /> and <br />.
A general "find-and-replace" function was executed to swap the tags.
We decided not to close the <img> tags with </img>, but with
/> at the end of the tag. This was done manually.
The Web Site Was Validated
Finally, all our pages were validated against the official W3C DTD Validator:
W3C XHTML Validator.
A few more errors were found and edited manually. The most common error was
missing </li> tags in lists.
We could also have used a converting tool like HTML TIDY.
Raggett's HTML TIDY is a free tool for cleaning up HTML code. It works
great on the hard-to-read markup, and it can help to identify where you need to pay
further attention on making your pages more accessible to people with
Reliable, affordable, feature-rich web hosting!
Take the uncertainty out of Web hosting and let
put service, performance and value back in. No matter which
hosting type or plan you choose, your site receives 24/7
maintenance and protection in our world-class data center. Plus,
you get the expert, friendly service you deserve, from the
world's largest hostname provider.
With three plans to choose from and
prices starting at just $4.99 per month, GoDaddy.com is sure to have a plan that's
right-sized and right-priced just for you!
All plans feature FREE 24x7 setup, FREE 24x7 monitoring, best-
of-breed routers, firewalls and servers, 24x7 onsite physical security
and access to our exclusive Go Daddy Hosting Connection, THE place
to install over 30 FREE applications. Virtual Dedicated and Dedicated
Server plans also available.
Visit GoDaddy.com today.
Virtual Dedicated, Dedicated Server and unlimited plans also available.
Save 10% on web hosting - Enter code w3tenoff at checkout
Get Your Diploma!
W3Schools' Online Certification Program is the perfect solution for busy
professionals who need to balance work, family, and career building.
The HTML Certificate is for developers who want to document their knowledge of HTML, XHTML, and CSS.
The XML Certificate is for developers who want to document their knowledge of XML, XML DOM and XSLT.
The ASP Certificate is for developers who want to document their knowledge of ASP, SQL, and ADO.
The PHP Certificate is for developers who want to document their knowledge of PHP and SQL (MySQL).