XHTML STRICT – Common Things We Forget

Just today, I’m bugging around with this XHTML Strict validation. After making all pages pass the HTML Validator for Firefox (HTML Tidy), I noticed that some pages are in XHTML Transitional rather than Strict. This is what I saw in the validator window.


Doctype given is "-//W3C//DTD XHTML 1.0 Strict//EN"
Document content looks like XHTML 1.0 Transitional

It took me several hours (not focusing on it actually) and found out that I missed these important rules for XHTML 1.0 Strict:

  • Anchor tag attribute “target ” is deprecated: Useful when we need to open new windows for some links but will not validate, so bad.
  • width attribute on table cells are not allowed: Of course I know this but I forget sometimes
  • Form name attribute is not allowed
  • Form elements must be contained inside a block level element, not just the form itself: We can wrap them via div or any other block level element instead
  • <br /> element must be directly contained in a block level element

So far it all validates now. Those little things that I kept on forgetting every time I develop web pages.

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