Dynamic HTML
Dynamic HTML is the combination of several novel techniques:
- Cascading Style Sheets,
first introduced in HTML-3.2,
have evolved to a powerful way to influence the presentation of information
in HTML documents. In this course text style sheets are merely used to
create link anchors with different colors. But all HTML objects can be
rendered in different ways, and positioned anywhere within the browser window.
- The major browser developers
(Netscape and
Microsoft)
have different ideas about which HTML constructs should be allowed to
become objects that can be manipulated.
Objects can be made visible or invisible; colors may be changed;
objects may also be moved.
- Scripting makes additional interactivity and animation possible.
Netscape has developed
Javascript, while Microsoft
tries to push VBscript. The combination of positioning with scripting
makes it possible to create animated effects that are popular in and
very typical for Powerpoint presentations.
When developing hyperdocuments for general World Wide Web use
it is not yet advisable to use Dynamic HTML because of incompatibilities
between browsers.