Document: preferredStyleSheetSet property

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

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.");
}

Browser compatibility

See also