JavaScript Document selectedStyleSheetSet Property

if ("selectedStyleSheetSet" in document) {
  console.log(
    "Current style sheet set: " + document.selectedStyleSheetSet
  );
} else {
  console.log("API not available");
}

const supported = "selectedStyleSheetSet" in document;
console.log(supported);

if (supported) {
  console.log(JSON.stringify(document.selectedStyleSheetSet));
} else {
  console.log("API not available");
}

// Prefer this over selectedStyleSheetSet for new apps
document.documentElement.classList.toggle("dark");
console.log(
  document.documentElement.classList.contains("dark")
);