CSSPropertyRule.syntax

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.

Syntax

const syntax = CSSPropertyRule.syntax;

Value

A USVString.

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>".

@property --property-name {
  syntax: '<color>';
  inherits: false;
  initial-value: #c0ffee;
}
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].syntax); //the string "<color>"

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
syntax
85
85
No
No
71
No
85
85
No
60
No
14.0

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https://developer.mozilla.org/en-US/docs/Web/API/CSSPropertyRule/syntax