ookkoouu

function observeMutation(
	target: Element,
	callback: (muts: MutationRecord[]) => void,
	options?: MutationObserverInit
) {
	const obs = new window.MutationObserver(callback);
	obs.observe(target, options);
	return () => obs.disconnect();
}

ookkoouu

function addTooltip(noteref) {
	const note = document.querySelector(noteref.getAttribute("href"));
	const noteText = note.firstElementChild.innerText.slice(0, -3);
	noteref.setAttribute("title", noteText);
}

const noterefs = [...document.querySelectorAll(".footnote-ref > a")];
noterefs.map((ref) => addTooltip(ref));