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HTML validation

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Title: HTML validation


1
HTML validation
  • Jill R. SommerInstitute of Applied
    LinguisticsKent State University

2
What is a validator?
  • A validator is a computer program used to check
    the validity or syntactical correctness of a
    fragment of code or document. The term is
    commonly used in the context of validating HTML,
    CSS and XML documents or RSS feeds though it can
    be used for any defined format or language.

3
Why should I validate?
  • When you validate your files, you run the address
    through a tool that checks the syntax of your
    HTML coding.
  • It will point out any errors or invalid HTML code
    to ensure your code is sound.
  • You will probably see a few minor errors. You can
    decide whether or not you want to fix them. Major
    errors should definitely be fixed.

4
Importance of validating XHTML code
  • The Extensible HyperText Markup Language, or
    XHTML, is a markup language that has the same
    expressive possibilities as HTML, but a stricter,
    more verbose syntax
  • XHTML code needs to be well-formed (syntactically
    correct) for it to be processed.

5
Importance of validating XHTML code
  • http//en.wikipedia.org/wiki/XHTML offers a lot
    of really good information on XHTML and offers
    some common errors in XHTML if you need to
    troubleshoot.

6
HTML validation services
  • W3C Markup Validation Service, a free service
    that checks Web documents in formats like HTML
    and XHTML for conformance to W3C Recommendations
    and other standards.http//validator.w3.org/

7
HTML validation services
  • WDG HTML Validatorhttp//www.htmlhelp.com/tools/v
    alidator/
  • HTML Tidyhttp//prdownloads.sourceforge.net/int64
    /tidy-060405-setup.exe?download
  • Firefox page validatorhttps//addons.mozilla.org/
    firefox/249/
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