switched theme

static/js/footnotes.js

@@ -0,0 +1,32 @@
+(function () {
+  'use strict';
+
+  const refs = document.querySelectorAll('sup.footnote-reference');
+  if (!refs.length) return;
+
+  refs.forEach(function (sup) {
+    const a = sup.querySelector('a');
+    if (!a) return;
+
+    const targetId = a.getAttribute('href').replace(/^#/, '');
+    const refId = 'fnref-' + targetId;
+    sup.id = refId;
+
+    const def = document.getElementById(targetId);
+    if (!def) return;
+
+    // Append ↩ to the last <p> inside the definition
+    const paras = def.querySelectorAll('p');
+    const lastPara = paras[paras.length - 1];
+    if (!lastPara) return;
+
+    const backlink = document.createElement('a');
+    backlink.href = '#' + refId;
+    backlink.className = 'footnote-backref';
+    backlink.setAttribute('aria-label', 'Back to reference');
+    backlink.textContent = '↩';
+
+    lastPara.appendChild(document.createTextNode('\u00a0'));
+    lastPara.appendChild(backlink);
+  });
+})();