CSSPropertyRule: syntax 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 syntax property of the CSSPropertyRule interface returns the literal syntax of the custom property registration represented by the @property rule, controlling how the property's value is parsed at computed-value time.
Value
A string.
Examples
This stylesheet contains a single @property rule. The first CSSRule returned will be a CSSPropertyRule representing this rule. The syntax property returns the literal string "<color>".
css
@property --property-name {
syntax: "<color>";
inherits: false;
initial-value: #c0ffee;
}
js
const myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].syntax); // "<color>"
Specifications
| Specification |
|---|
| CSS Properties and Values API Level 1 # dom-csspropertyrule-syntax |
Browser compatibility
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