Document: preferredStyleSheetSet property
Deprecated
Avoid using this feature in new projects. This feature may be a candidate for removal from web standards or browsers.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The preferredStyleSheetSet property returns the preferred style sheet set as set by the page
author.
Value
The author's preferred style sheet set. This is determined from the order of style sheet declarations and the
Default-Style HTTP header.
If there isn't a preferred style sheet set defined by the author, the empty string ("") is returned.
Examples
js
if (document.preferredStyleSheetSet) {
console.log(
`The preferred style sheet set is: ${document.preferredStyleSheetSet}`,
);
} else {
console.log("There is no preferred style sheet.");
}