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