@xiee/utils/js/fix-footnote.js

Miscellaneous tools and utilities to manipulate HTML pages

(d => {
  // add [] to footnote numbers
  d.querySelectorAll('sup[id^="fnref:"] > a.footnote-ref, a.footnote-ref > sup').forEach(el => {
    if (!/^[0-9]+$/.test(el.innerText)) return;
    el.innerText = `[${el.innerText}]`;
    el.parentNode.before(d.createTextNode(' '));
  });
  // move the return symbol into the previous <p>
  d.querySelectorAll('.footnotes > ol > li > p ~ .footnote-return').forEach(el => {
    el.previousElementSibling.lastChild.after(el);
  });
})(document);