Transcript Modern Web Standards

Modern Web standards
in CHM portals
Mădălina Sauca
Finsiel Romania
Copenhagen, 6 June 2006
Web Accessibility
 The site information must be accessible to:
 all users, including users with physical, mental or technical
disabilities
 all types of devices (different browsers, PDAs and mobile phones,
TVs, speech synthesizers, Braille interpreters, TVs, printers, etc.)
 other web sites, web applications and search engines
 WAI (Web Accessibility Initiative) – guidelines discussing
accessibility issues and providing accessible design
solutions
 There are three levels of conformance:
 WAI A Conformance Level "A“ (used in CHM for administration
functionalities)
 WAI AA Conformance Level "Double-A" (used in CHM for end users
interface)
 WAI AAA Conformance Level "Triple-A“; the most strict
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Accessibility - Further reading
 http://diveintoaccessibility.org/
 http://www.w3.org/WAI/
 Full WAI standards description for all the three levels of conformance:
 http://www.w3.org/WAI/GL/WCAG20/complete.html
 http://www.w3.org/WAI/GL/WCAG20/complete.html#ckli
st (check list)
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Usability
 Ensuring a “Easy to use” (or “User
friendly”) interface supposes to:
improve the website navigation (ex: search, sitemap)
improve the user orientation within the site (ex:
bread crumb trail)
improve user control and flexibility (ex: language
option)
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Usability - Further reading
http://www.useit.com/
http://www.usableweb.com/
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Semantic HTML
“Semantic Web” refers to Machine-Understandable
information
Semantically correct HTML is important - thinking
on how applications (Google for instance)
interpret it, more than how users view it
Use the proper HTML tags for certain types of
information
 use of <h1>,<h2> tags for headings, use of <table> only for tabular
information and NOT for the layout design... etc.
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Semantic HTML - Further reading
 http://www.ermanz.govt.nz/newsevents/archives/presentations/semantichtml.html
 http://www.w3.org/2001/sw/
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XHTML (eXtensible Hyper Text Markup Language)
XHTML is a family of document types that
reproduce and extend HTML4 and are XML-based
XHTML documents are XML conforming (is
designed to work with XML-based user agents and
can be validated using XML tools)
Can utilize applications (e.g. scripts and applets)
that rely on
either the HTML Document Object Model
or the XML Document Object Model
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XHTML - Further reading
http://www.w3.org/TR/xhtml1/
 Validation service
 http://validator.w3.org/
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CSS2

The Cascading Style Sheets (CSS) are used for the graphical presentation
of website layouts.
Target! Complete separation of the structure from presentation – the CSS should have
absolute control over the appearance.
CSS level 2
 is used in two major directions: for the elements positioning and for
their stylization
 builds on CSS1 and, with very few exceptions, all valid CSS1 style
sheets are valid CSS2 style sheets
 allows information to be presented differently according to the target
media (screen, printer, handheld/mobile etc.) and to the client’s settings
(alternative layouts, text browsers, etc.)
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CSS2 - Further reading
 http://www.w3.org/TR/CSS21/
 http://www.w3.org/TR/REC-CSS2/
 http://www.w3.org/Style/CSS/
 Validation service:
 http://jigsaw.w3.org/css-validator/
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