CSSPropertyRule
Baseline
2024
Newly available
Since July 2024, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The CSSPropertyRule interface of the CSS Properties and Values API represents a single CSS @property rule.
Instance properties
Inherits properties from its ancestor CSSRule.
CSSPropertyRule.inheritsRead only-
Returns the inherit flag of the custom property.
CSSPropertyRule.initialValueRead only-
Returns the initial value of the custom property.
CSSPropertyRule.nameRead only-
Returns the name of the custom property.
CSSPropertyRule.syntaxRead only-
Returns the literal syntax of the custom property.
Instance methods
No specific methods; inherits methods from its ancestor CSSRule.
Examples
This stylesheet contains a single @property rule. The first CSSRule returned will be a CSSPropertyRule with the properties and values as defined by the rule in CSS.
css
@property --property-name {
syntax: "<color>";
inherits: false;
initial-value: #c0ffee;
}
js
const myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); // A CSSPropertyRule
Specifications
| Specification |
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| CSS Properties and Values API Level 1 # the-css-property-rule-interface |
Browser compatibility
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CSSPropertyRule
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inherits
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initialValue
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name
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syntax
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Legend
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- Full support
- Full support