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HTML & XHTML: The Definitive Guide, 5th Edition by Chuck Musciano, Bill Kennedy

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Appendix B. HTML/XHTML Tag Quick Reference

In this appendix, we list in alphabetical order all the known (and some undocumented) HTML and XHTML tags and attributes currently supported by one or more of today’s popular browsers.

Core Attributes

Prior to HTML 4.0, there were few attributes that could be used consistently for all the HTML tags. HTML 4.0 changed this, defining a set of 16 core attributes that can be applied to almost all the elements in both HTML 4.01 and XHTML 1.0. For brevity, we list these core attributes in this section and spare you the redundancies in the table that follows:

class= name

Specify a style class controlling the appearance of the tag’s contents

dir= dir

Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)

id= name

Define a reference name for the tag that is unique in the document

lang= language

Specify the human language for the tag’s contents with an ISO 639 standard two-character name and optional dialect subcode

onclick= applet

Specify an applet to be executed when the user clicks the mouse on the tag’s content display area

ondblclick= applet

Specify an applet to be executed when the user double-clicks the mouse button on the tag’s content display area

onkeydown= applet

Specify an applet to be executed when the user presses down on a key while the tag’s contents have input focus

onkeypress= applet

Specify an applet to be executed when the user presses and releases a ...

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