CSSStyleSheet extension type

The CSSStyleSheet interface represents a single CSS stylesheet, and lets you inspect and modify the list of rules contained in the stylesheet. It inherits properties and methods from its parent, StyleSheet.

A stylesheet consists of a collection of CSSRule objects representing each of the rules in the stylesheet. The rules are contained in a CSSRuleList, which can be obtained from the stylesheet's CSSStyleSheet.cssRules property.

For example, one rule might be a CSSStyleRule object containing a style such as:

h1,
h2 {
  font-size: 16pt;
}

Another rule might be an at-rule such as or , and so forth.

See the Obtaining a StyleSheet section for the various ways a CSSStyleSheet object can be obtained. A CSSStyleSheet object can also be directly constructed. The constructor, and the CSSStyleSheet.replace, and CSSStyleSheet.replaceSync methods are newer additions to the specification, enabling Constructable Stylesheets.

on
Implemented types

Constructors

CSSStyleSheet([CSSStyleSheetInit options])
factory

Properties

cssRules → CSSRuleList
no setter
disabled ↔ bool
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
href → String?
no setterinherited
media → MediaList
no setterinherited
ownerNode → JSObject?
no setterinherited
ownerRule → CSSRule?
no setter
parentStyleSheet → CSSStyleSheet?
no setterinherited
rules → CSSRuleList
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
title → String?
no setterinherited
type → String
no setterinherited

Methods

addRule([String selector, String style, int index]) → int
The obsolete CSSStyleSheet interface's addRule() legacy method adds a new rule to the stylesheet. You should avoid using this method, and should instead use the more standard CSSStyleSheet.insertRule method.
deleteRule(int index) → void
The CSSStyleSheet method deleteRule() removes a rule from the stylesheet object.
insertRule(String rule, [int index]) → int
The CSSStyleSheet.insertRule() method inserts a new CSS rule into the current style sheet.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeRule([int index]) → void
The obsolete CSSStyleSheet method removeRule() removes a rule from the stylesheet object. It is functionally identical to the standard, preferred method CSSStyleSheet.deleteRule.
replace(String text) → JSPromise<CSSStyleSheet>
The replace() method of the CSSStyleSheet interface asynchronously replaces the content of the stylesheet with the content passed into it. The method returns a promise that resolves with the CSSStyleSheet object.
replaceSync(String text) → void
The replaceSync() method of the CSSStyleSheet interface synchronously replaces the content of the stylesheet with the content passed into it.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited