tekom-Jahrestagung 2012 - ActiveDoc

User Assistance
UA 15
Workshop
Hands-On HTML5
Alan Houser, Group Wellesley, Inc., Pittsburgh, USA
The current popular version of the language of the World Wide Web,
HTML 4, is more than 10 years old. In the time since HTML 4 was originally
designed, Web text and graphics have been supplemented by multimedia,
Web applications, and rich interactivity.
HTML5 more fully supports the Web‘s current and future capabilities,
and maintains the vision of a standards-based Web. Although today’s
World Wide Web provides rich capabilities, HTML5 was designed with
simplicity in mind. In this workshop, we will explore HTML5 support for
structure and semantics, by developing HTML5 web pages.
The Basics of an HTML5 Web Page
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Doctype Declaration
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Document Metadata
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Document Sections
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Content Groups
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Inline Semantics
Doctype Declaration
HTML5 documents begin with the following DOCTYPE declaration:
.
Contrast this with a common form of the HTML 4 DOCTYPE
declaration:
The HTML5 doctype declaration is evidence of several goals in HTML5
design:
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Simplicity: The HTML5 DOCTYPE is terse and easy to remember.
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HTML5 is envisioned as a living specification. The specification is
expected to evolve over time, as new features are proposed by the
community and are supported by browser vendors. HTML documents
should not require a particular version number to be appropriately
displayed.
Document Metadata
HTML5 document-level metadata elements provide containers for information
about the document. These include items such as the document
title, styling information, and other document-level information.
Elements in this category include , , and .
These elements are largely unchanged from previous versions of
HTML.
Document Sections
HTML5 provides improved markup for labeling and grouping document
sections. This greatly facilitates display of HTML5 content on different
devices with different display characteristics. It can also substantially
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tekom-Jahrestagung 2012