Javascript [Electronic resources] : The Definitive Guide (4th Edition) نسخه متنی

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DOM Level 2 CSS

Subinterfaces

CSSCharsetRule, CSSFontFaceRule, CSSImportRule, CSSMediaRule,
CSSPageRule, CSSStyleRule, CSSUnknownRule

Constants

These constants represent the various types of rules that may appear
in a CSS style sheet. They are the legal values of the
type property, and they specify which of the above
subinterfaces this object implements.

unsigned short UNKNOWN_RULE = 0;    // CSSUnknownRule
unsigned short STYLE_RULE = 1;      // CSSStyleRule
unsigned short CHARSET_RULE = 2;    // CSSCharsetRule
unsigned short IMPORT_RULE = 3;     // CSSImportRule
unsigned short MEDIA_RULE = 4;      // CSSMediaRule
unsigned short FONT_FACE_RULE = 5;  // CSSFontFaceRule
unsigned short PAGE_RULE = 6;       // CSSPageRule

Properties

String cssText

The textual
representation of the rule. If you set this property, it may throw a
DOMException with one of the following code values
for one of the following reasons:

HIERARCHY_REQUEST_ERR

The specified rule is not legal at this location in the style sheet.

INVALID_MODIFICATION_ERR

The new value of the property is a rule of a different type than the
original value.

NO_MODIFICATION_ALLOWED_ERR

The rule or the style sheet that contains it is read-only.

SYNTAX_ERR

The specified string is not legal CSS syntax.

readonly

CSSRule

parentRule

The
containing rule of this rule, or null if this rule
does not have a parent. An example of a CSS rule with a parent is a
style rule within an @media rule.

readonly

CSSStyleSheet

parentStyleSheet

The CSSStyleSheet object that contains
this rule.

readonly unsigned short type

The type of
CSS rule this object represents. The legal values for this property
are the previously listed constants. This CSSRule interface is never
implemented directly, and the value of this property specifies which
more specific subinterface is implemented by this object.

Description

This interface defines properties that are common to all types of
rules in CSS style sheets. No object directly implements this
interface; instead, they implement one of the more specific
subinterfaces listed earlier. The most important subinterface is
probably CSSStyleRule, which describes a CSS rule that defines a
document style.

See Also

CSSStyleRule

Type of

CSSRule.parentRule, CSSStyleDeclaration.parentRule,
CSSStyleSheet.ownerRule

Returned by

CSSRuleList.item( )