The read-only name property of the CSSPropertyRule interface represents the property name, this being the serialization of the name given to the custom property in the @property rule’s prelude.


const name = CSSPropertyRule.name;


A USVString.


This stylesheet contains a single @property rule. The first CSSRule returned will be a CSSPropertyRule representing this rule. The name property returns the string "--property-name", which is the name given to the custom property in CSS.

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


Specification Status Comment
CSS Properties and Values API Level 1
The definition of 'Name' in that specification.
Working Draft Initial definition.

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