CSSRuleList extension type

A CSSRuleList represents an ordered collection of read-only CSSRule objects.

While the CSSRuleList object is read-only, and cannot be directly modified, it is considered a live object, as the content can change over time.

To edit the underlying rules returned by CSSRule objects, use CSSStyleSheet.insertRule and CSSStyleSheet.deleteRule, which are methods of CSSStyleSheet.

The interface has no constructor. An instance of CSSRuleList is returned by CSSStyleSheet.cssRules and CSSKeyframesRule.cssRules.

Note: This interface was an attempt to create an unmodifiable list and only continues to be supported to not break code that's already using it. Modern APIs use types that wrap around ECMAScript array types instead, so you can treat them like ECMAScript arrays, and at the same time impose additional semantics on their usage (such as making their items read-only).

on
Implemented types
Available extensions

Properties

hashCode → int
The hash code for this object.
no setterinherited
length → int
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

item(int index) → CSSRule?
The item() method of the CSSRuleList interface returns the CSSRule object at the specified index or null if the specified index doesn't exist.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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