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What it is:
Combines new HTML with CSS and Scripting.
Web pages gain interactivity and movement, becoming more "dynamic."
Additional tags to manipulate elements on a page. (movement, fades, etc.)
Pros:
Better than multimedia through plug-ins / helpers
All effects are hard coded into the page, not in a separate file. They are "run" on the client, without additional downloads.
Cons:
Pages are hugely difficult to create.
Netscape and Microsoft implementations differ, making it even harder to develop pages.
Netscape Examples:
Presentation: DHTML Zone
From Macromedia, maker of DreamWeaver, a great site devoted to DHMTL.
Dynamic Menus
Shows how dynamic HTML can make menus work---note how advanced this is compared with the JavaScript example.
Dynamic Fonts
Works similar to cascading style sheets, but the font faces themselves are downloaded.
Newsbox example
Another example of DHTML treating page elements as objects. Compare this with the Java-based ticker.
Microsoft Gallery
More Internet Explorer examples
Resources:
Dynamic HTML 101 (InternetUser) Introduction
DHTML Zone: Creating Multimedia with Dynamic HTML: An Overview
Microsoft Dynamic HTML
Netscape Dynamic HTML
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