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JavaScript: The Definitive Guide, 4th Edition
By
David Flanagan
Publisher
: O'Reilly
Pub Date
: November 2001
ISBN
: 0-596-00048-0
Pages
: 936
Slots
: 1
This fourth edition of the definitive reference to
JavaScript, a scripting language that can be embedded
directly in web pages, covers the latest version of the
language, JavaScript 1.5, as supported by Netscape 6 and
Internet Explorer 6. The book also provides complete
coverage of the W3C DOM standard (Level 1 and Level 2),
while retaining material on the legacy Level 0 DOM for
backward compatibility.
Availability
DOM
Level 1 HTML
Inherits from/Overrides
Node
Element HTMLElementAlso Implements
ElementCSSInlineStyle
If the implementation supports CSS style sheets, all objects that
implement this interface also implement the ElementCSSInlineStyle
interface. Because CSS support is quite common in web browsers, the
style property defined by that interface is
included here for convenience.
Subinterfaces
HTMLAnchorElement | HTMLAppletElement | HTMLAreaElement |
HTMLBRElement | HTMLBaseElement | HTMLBaseFontElement |
HTMLBodyElement | HTMLButtonElement | HTMLDListElement |
HTMLDirectoryElement | HTMLDivElement | HTMLFieldSetElement |
HTMLFontElement | HTMLFormElement | HTMLFrameElement |
HTMLFrameSetElement | HTMLHRElement | HTMLHeadElement |
HTMLHeadingElement | HTMLHtmlElement | HTMLIFrameElement |
HTMLImageElement | HTMLInputElement | HTMLIsIndexElement |
HTMLLIElement | HTMLLabelElement | HTMLLegendElement |
HTMLLinkElement | HTMLMapElement | HTMLMenuElement |
HTMLMetaElement | HTMLModElement | HTMLOListElement |
HTMLObjectElement | HTMLOptGroupElement | HTMLOptionElement |
HTMLParagraphElement | HTMLParamElement | HTMLPreElement |
HTMLQuoteElement | HTMLScriptElement | HTMLSelectElement |
HTMLStyleElement | HTMLTableCaptionElement | HTMLTableCellElement |
HTMLTableColElement | HTMLTableElement | HTMLTableRowElement |
HTMLTableSectionElement | HTMLTextAreaElement | HTMLTitleElement |
HTMLUListElement |
Properties
readonly CSS2Properties style
The value of
the style attribute that specifies inline CSS
styles for this element. This property is not actually defined
directly by the HTMLElement interface; instead, it is defined by the
ElementCSSInlineStyle interface. If a browser supports CSS style
sheets, all of its HTMLElement objects implement
ElementCSSInlineStyle and define this style
property. The value of this property is an object that implements the
CSSStyleDeclaration interface and the (more commonly used)
CSS2Properties interface.
String className
The value
of the class attribute of the element, which
specifies the name of a CSS class. Note that this property is not
named "class" because that name is a reserved word in
JavaScript.
String dir
The value of
the dir attribute of the element, which specifies
the text direction for the document.
String id
The value of the
id attribute. No two elements within the same
document should have the same value for id.
String lang
The value of
the lang attribute, which specifies the language
code for the document.
String title
The value of
the title attribute, which specifies descriptive
text suitable for display in a "tooltip" for the element.
Description
This interface defines properties that represent the attributes
shared by all HTML elements. All HTML elements implement this
interface, and most implement a tag-specific subinterface that
defines properties for each of that tag's attributes. In
addition to the properties listed here, see the
HTMLElement reference page in the client-side reference
section for a list of DOM Level 0 event handler properties that are
supported by all HTML elements in a document.
Some HTML tags do not allow any attributes other than the universal
attributes allowed on all HTML tags and represented by the properties
of HTMLElement. These tags do not have their own tag-specific
subinterface, and elements of this type in the document tree are
represented by an HTMLElement object. The tags without a tag-specific
interface of their own are the following:
<abbr> | <acronym> | <address> | <b> |
<bdo> | <big> | <center> | <cite> |
<code> | <dd> | <dfn> | <dt> |
<em> | <i> | <kbd> | <noframes> |
<noscript> | <s> | <samp> | <small> |
<span> | <strike> | <strong> | <sub> |
<sup> | <tt> | <u> | <var> |
there are many HTML tags that do have
tag-specific subinterfaces. Typically, a tag named
T has a tag-specific interface named
HTMLT Element. For example, the
<head> tag is represented by the
HTMLHeadElement interface. In a few cases, two or more related tags
share a single interface, as in the case of the
<h1> through <h6>
tags, which are all represented by the HTMLHeadingElement interface.
Most of these tag-specific interfaces do nothing more than define a
JavaScript property for each attribute of the HTML tag. The
JavaScript properties have the same names as the attributes and use
lowercase (e.g., id) or, when the attribute name
consists of multiple words, mixed-case (e.g.,
className). When an HTML attribute name is a
reserved word in Java or JavaScript, the property name is changed
slightly. For example, the class attribute of all
HTML tags becomes the className property of the
HTMLElement interface because class is a reserved
word. Similarly, the for attribute of
<label> and
<script> tags becomes the
htmlFor property of the HTMLLabelElement and
HTMLScriptElement interfaces because for is a
reserved word. The meanings of those properties that correspond
directly to HTML attributes are defined by the HTML specification,
and documenting each one is beyond the scope of this book.
The following table lists all the HTML tags that have a
corresponding subinterface of HTMLElement. For each tag, the table
lists the interface name and the names of the properties and methods
it defines. All properties are read/write strings unless otherwise
specified. For properties that are not read/write strings, the
property type is specified in square brackets before the property
name. Because these interfaces and their properties map so directly
to HTML elements and attributes, most interfaces do not have
reference pages of their own in this book, and you should consult an
HTML reference for details. The exceptions are interfaces that define
methods and interfaces that represent certain particularly important
tags, such as the <body> tag. These
interfaces are marked with a * in the table, and you can look them up
in this reference section for further details.
draft.
See Also
HTMLElement in the client-side reference section
Type of
HTMLDocument.body
Passed to
HTMLSelectElement.add( )
Returned by
HTMLTableElement.createCaption( ), HTMLTableElement.createTFoot( ),
HTMLTableElement.createTHead( ), HTMLTableElement.insertRow( ),
HTMLTableRowElement.insertCell( ), HTMLTableSectionElement.insertRow( )
