CSSImportRule: supportsText property - Web APIs | MDN
Value
A string, or null.
Examples
The document's single stylesheet contains three @import rules. The first declaration imports a stylesheet if display: flex is supported. The second declaration imports a stylesheet if the :has selector is supported. The third declaration imports a stylesheet without a supports condition.
The supportsText property returns the import conditions associated with the at-rule.
css
@import "style1.css" supports(display: flex);
@import "style2.css" supports(selector(p:has(a)));
@import "style3.css";
js
const myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].supportsText); // returns `"display: flex"`
console.log(myRules[1].supportsText); // returns `"selector(p:has(a))"`
console.log(myRules[2].supportsText); // returns `null`
Specifications
| Specification |
|---|
| CSS Object Model (CSSOM) # dom-cssimportrule-supportstext |