These attributes allow attachment of rendering and accessibility
information to most of the elements used in document rendering. The
TITLE attribute allows descriptive narrative information to be
attached to elements (which are not necessarily rendered) while
Style Sheet attributes facilitate attachment of rendering rules
to displayed elements.
Description:
This attribute serves to classify the current element by assigning it one or
more category labels to which the element belongs. Such
grouping mechanisms ease in the assignment of rendering characteristics for
groups of elements.
Values:
Given as a space separated list of class names consisting of
alphanumeric characters.
Description:
This assigns a unique alpha-numeric identifier for referencing the current
element. No other ID or NAME attribute in the current document may share
the same identifier. Hyperlinks may use this identifier to serve as
a destination of a link, or style sheets may use this attribute to reference
the current element instance.
Values:
An alphanumeric string - initial character must be in the [a-zA-Z] set, while
subsequent characters can be in the [a-zA-Z0-9.-] set.
Description:
This attribute is a text string providing rendering information for the
current element.
Values:
Please see the description of
inline
styles[-->Index DOT Css] for more
information on how to use this attribute and its
possible
values[-->Index DOT Css].
Description:
This is a method of giving access/focus to an active HTML element using
a keyboard character. This is a common GUI paradigm also known
as a "keyboard shortcut" or "keyboard accelerator"
A single character is used as the value of this attribute. In addition,
a platform-dependent key is usually used in combination with the
ACCESSKEY character to access the functionality of the element.
In Internet Explorer 5.0, "non-active" elements (all elements listed except
A, AREA, OBJECT and form field elements) can use an ACCESSKEY to
give focus to an element if it also specifies a TABINDEX attribute/value.
Values:
A single, case-insensitive alphanumeric character from a browser's
character set.
Description:
"Tabbing" is a method of giving access/focus to an active HTML
element using a standard keyboard sequence. All the active elements in a
document can be cycled through using this sequence (ex: Windows TAB key.)
The order of the active elements in this cycle is usually the order they
occur in the document, but the TABINDEX attribute allows a different order
to be established. The use of this attribute should create the following
tabbing order cycle if the browser supports the attribute:
Active elements using the TABINDEX attribute with positive integers are
navigated first. Low values are navigated first.
Active elements not specifying any TABINDEX attribute
Other constraints also apply:
Those elements carrying a DISABLED attribute or using negative TABINDEX
values do not participate in the tabbing cycle.
IE 5.0 active elements which can receive tabbing focus: A, BODY, BUTTON,
EMBED, FRAME, IFRAME, IMG, INPUT, ISINDEX, OBJECT, SELECT, TEXTAREA
IE 5.0 TABINDEX documentation is too complicated to describe: APPLET,
DIV, FRAMESET, SPAN, TABLE, TD, TH, THEAD, TFOOT
If an element is "non-active" (see previous point above), then it can
not use an ACCESSKEY attribute unless a TABINDEX attribute is also set.
Values: Positive or negative integers. IE 5.0
documentation lists a valid value range of -32767 to 32767.
Description:
This attribute is used to give further information regarding the
contents of an element. Interactive elements such as hyperlinks,
images, or form fields may use this attribute to inform the user
about the nature of the resource, or to specify help information
if requested by the user.
The methods used to render the content of this attribute for this
should follow the standard guidelines for the system, but may vary
between browsers and platforms. For instance, visual browsers
will frequently display the title as a "tool tip" (a short message
that appears when the pointing device pauses over an object). Audio
user agents may speak the title information in a similar context.
Values: An alphanumeric string.
Browser Peculiarities
Netscape 4.x has a bug: A location in a document can be defined using the
ID attribute as well as the A NAME element. In Netscape 4.x this can be
accessed using hyperlinks from external documents, but if the hyperlink
is within the same document, the link does nothing.