HTML and CSS Reference
In-Depth Information
C
APPENDIX
HTML Elements
and Attributes
This appendix provides descriptions of the major elements and attri-
butes of HTML. The elements and attributes represent the specifi ca-
tions of the W3C; therefore, they might not all be supported by the
major browsers. Also, in some cases, an element or attribute is not
part of the W3C specifi cations, but instead is an extension offered
by a particular browser. Where this is the case, the element or attri-
bute is listed with the supporting browser indicated in parentheses.
Many elements and attributes have been deprecated by the W3C.
Deprecated elements and attributes are supported by most brows-
ers, but their use is discouraged. In addition, some elements and
attributes have been marked as obsolete . The use of both deprecated
and obsolete items is not recommended. However, while deprecated
items are in danger of no longer being supported by the browser
market, obsolete items will probably still be supported by the browser
market for the foreseeable future.
Finally, elements and attributes that are new with HTML5 are indi-
cated in the text. Note that some of these elements and attributes are
not supported by all browsers and browser versions.
The following data types are used throughout this appendix:
char
A single text character
char code
A character encoding
color
An HTML color name or hexadecimal
color value
date
A date and time in the format:
yyyy-mm-dd T hh: mm:ssTIMEZONE
id
An id value
lang
A language type
media
A media type equal to all, aural, braille,
handheld, print, projection, screen, tty, or tv
integer
An integer value
mime-type
A MIME data type, such as “text/css”
mime-type list
A comma-separated list of mime-types
option1 | option2 | …
The value is limited to the specifi ed list of
options , with the default in bold
script
A script or a reference to a script
styles
A list of style declarations
text
A text string
text list
A comma-separated list of text strings
url
The URL for a Web page or fi le
value
A numeric value
value list
A comma-separated list of numeric values
STARTING DATA FILES
There are no starting Data Files needed for this appendix.
HTML C1
 
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