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Summary
A CSSRuleList is an array-like object containing an ordered collection of CSSRule objects.
Description
Each CSSRule can be accessed as rules.item(index), or simply rules[index], where rules is an object implementing the CSSRuleList interface, and index is the 0-based index of the rule, in the order as it appears in the style sheet CSS. The number of objects is rules.length.
Example
// get the first style sheet’s first rule var first_rule = document.styleSheets[0].cssRules[0];
See also
CSSRuleList implementations
There are multiple properties in the CSSOM that will return a CSSRuleList. They are:
CSSStyleSheetpropertycssRulesCSSMediaRulepropertycssRulesCSSKeyframesRulepropertycssRulesCSSMozDocumentRulepropertycssRules