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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 non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

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

if (document.preferredStyleSheetSet) {
  console.log(
    `The preferred style sheet set is: ${document.preferredStyleSheetSet}`,
  );
} else {
  console.log("There is no preferred style sheet.");
}

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
`preferredStyleSheetSet`	No	No	3	No	No	No	No	No	4	No	No	No

Value

Examples

Browser compatibility

See also