Dynamic HTML: The Definitive Reference, 3rd Edition

Chapter 1. HTML and XHTML Reference

This chapter provides a complete list of HTML tags and attributes specified in the W3C recommendations for HTML 4.01 and XHTML 1.1 plus those implemented in yesterday’s and today’s mainstream browsers. This includes many items from the Web Hypertext Application Technology Working Group (WHATWG), such as Web Forms 2.0. Version information accompanies each tag and attribute so that you can see whether a particular entry applies to the browser(s) you must support. At a glance, you can see the version number of Internet Explorer (IE), pre-Mozilla Netscape Navigator (NN), Mozilla-based browsers (Moz), Safari (Saf), Opera (Op), and the W3C HTML specification (HTML) in which the item was first introduced. Because this book deals with Dynamic HTML, the history timeline goes back only to HTML 3.2, Netscape Navigator 2, and Internet Explorer 3. For derivatives of the Mozilla Foundation’s browser (e.g., Firefox, Netscape 6 or later, Camino, etc.), see Appendix F. Although some DHTML facilities were available in early versions of Opera, this book starts its Opera history with version 7 from 2003, which coincides with the advent of the rendering engine that Opera uses today. Therefore, an item marked “Op 7” may have been supported by earlier versions.

Other than for Opera, if an item existed prior to one of these versions—or was available at the first release of newer browsers, such as Mozilla and Safari—and is still in use, it is simply marked “all.” Where ...