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function getPos(element) {
/* Element.getBoundingClientRect()
* Return box of the element relatively to viewport.
*/
const rect = element.getBoundingClientRect();
/* The properties window.scrollX and window.scrollY
* return the viewport position relatively to the document
*/
return {
x: rect.left + window.scrollX,
y: rect.top + window.scrollY,
};
}
// Use this if needed :
// const getTop = element => element.offsetTop + (element.offsetParent && getTop(element.offsetParent));
let articles;
const resize = () => {
for (const [article, sidenote] of articles) {
if (sidenote.offsetWidth < 200 || window.screen.width < 1400) {
sidenote.innerHTML = "";
return;
}
const notes = Array.from(article.querySelectorAll("li")).filter((element) =>
element.id.startsWith("user-content-fn"),
);
const newSidenotes = notes.map((sidenoteLi) => {
const div = document.createElement("div");
const refName = sidenoteLi.querySelector(".data-footnote-backref")
.attributes.href.value;
const refSideNode = article.querySelector(
`#${CSS.escape(refName.slice(1))}`,
);
const sup = document.createElement("sup");
sup.textContent = refSideNode.textContent + " ";
for (const element of sidenoteLi.children) {
const child = element.cloneNode(true);
div.append(child);
}
div.children[0].prepend(sup);
div.style.top = `${getPos(refSideNode).y}px`;
div.classList.add("sidenote");
return div;
});
sidenote.replaceChildren(...newSidenotes);
if (sidenote.offsetWidth < 100 || window.screen.width < 1400) {
sidenote.innerHTML = "";
return;
}
}
};
window.addEventListener("DOMContentLoaded", () => {
articles = Array.from(document.querySelectorAll("article"));
if (articles.length > 0) {
articles = articles.map((x) => [
x,
x.parentElement.querySelector(".sidenotes"),
]);
new ResizeObserver(resize).observe(articles[0][1]);
}
if (document.querySelectorAll(".math-display").length > 0) {
document.head.innerHTML +=
'<link href="/s/css/katex.css" rel="stylesheet"/>';
}
});
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