Document: lastStyleSheetSet 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 thecompatibility 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.
TheDocument.lastStyleSheetSet property returns the last enabled style sheet set. This property'svalue changes whenever thedocument.selectedStyleSheetSet property ischanged.
Value
The style sheet set that was most recently set. If the current style sheet set has not been changed by settingdocument.selectedStyleSheetSet, the returned value isnull.
Note:This value doesn't change whendocument.enableStyleSheetsForSet() is called.
Examples
let lastSheetSet = document.lastStyleSheetSet;if (!lastSheetSet) { lastSheetSet = "Style sheet not yet changed";} else { console.log(`The last style sheet set is: ${lastSheetSet}`);}