CSSPropertyRule: initialValue property
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 read-only initialValue
nullable property of the CSSPropertyRule
interface returns the initial value of the custom property registration represented by the @property
rule, controlling the property's initial value.
Value
A string which is a <declaration-value>
as
defined in CSS Syntax 3.
Examples
This stylesheet contains a single @property
rule. The first CSSRule
returned will be a CSSPropertyRule
representing this rule. The initialValue
property returns the string "#c0ffee"
this being the value of the initial-value
property in the CSS.
css
@property --property-name {
syntax: "<color>";
inherits: false;
initial-value: #c0ffee;
}
js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].initialValue); //the string "#c0ffee"
Specifications
Specification |
---|
CSS Properties and Values API Level 1 # dom-csspropertyrule-initialvalue |
Browser compatibility
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