https://earl2021-aru.netlify.app/libs/header-attrs/header-attrs.js

1// Pandoc 2.9 adds attributes on both header and div. We remove the former (to
2// be compatible with the behavior of Pandoc < 2.8).
3document.addEventListener('DOMContentLoaded', function(e) {
4  var hs = document.querySelectorAll("div.section[class*='level'] > :first-child");
5  var i, h, a;
6  for (i = 0; i < hs.length; i++) {
7    h = hs[i];
8    if (!/^h[1-6]$/i.test(h.tagName)) continue;  // it should be a header h1-h6
9    a = h.attributes;
10    while (a.length > 0) h.removeAttribute(a[0].name);
11  }
12});