Dynamic HTML or DHTML designates a technique of creating interactive web sites by using a combination of the static markup language HTML, a client-side scripting language (such as JavaScript) and the style definition language Cascading Style Sheets.

Also called dynamic content, information on a Website or Web page that is constantly being updated, usually daily, but sometimes as often as a user refreshes the page. Some dynamic content is instantaneously created according to a keyword used in a search.

The "DHTML" training series is intended for Web page developers who want to implement Dynamic HTML in their Web site design. It examines the basic concepts of DHTML and the use of Cascading Style Sheets, implementing JavaScript with DHTML, and the DHTML object model. Other topics covered include objects, events and event handling, style sheets and content formatting, and binding data from other sources to Web pages.