What is Dynamic HTML ?
There is no such a thing as Dynamic HTML as a programming or scripting language. DHTML is a marketing term coined by Microsoft and Netscape describing a series of technologies intoduced in the 4.0 versions of both of their browsers. Dynamic capabilities were added to the 4.0 browsers.
What makes a web page dynamic ?
- Dynamic documents allow the author to control how HTML displays a web page's content
- Dynamic documents change as a result of actions of a user
- Dynamic documents can position any element within a browser window and change that position after a document has been loaded
- Dynamic documents can hide and show content as required
There are three flavors of HTML.
- Netscape DHTML
- Microsoft (Internet Explorer) DHTML
- Cross-Browser DHTML.
These web pages will concentrate on Cross-Browser DHTML. Cross-Browser DHTML works in both Netscape and the Internet Explorer.
- Layers - allows the control of the positions of elements and their visibility (like CSS-P)
Microsoft (Internet Explorer) - Specific DHTML
- Visual Filters - allows changing of visual effects on graphics and text in documents
- Dynamic CSS - allows changing of visual appearance of document elements