ADD UPDATE SCRIPT v0.23

public/js/navbar-toggle.js

@@ -0,0 +1,27 @@
+(function () {
+    document.addEventListener('DOMContentLoaded', function () {
+        var toggle = document.querySelector('[data-navbar-toggle]');
+        if (!toggle) {
+            return;
+        }
+
+        var links = document.getElementById(toggle.getAttribute('aria-controls'));
+        if (!links) {
+            return;
+        }
+
+        toggle.addEventListener('click', function () {
+            var isOpen = links.classList.toggle('is-open');
+            toggle.setAttribute('aria-expanded', isOpen ? 'true' : 'false');
+            toggle.classList.toggle('is-active', isOpen);
+        });
+
+        document.addEventListener('keydown', function (event) {
+            if (event.key === 'Escape' && links.classList.contains('is-open')) {
+                links.classList.remove('is-open');
+                toggle.setAttribute('aria-expanded', 'false');
+                toggle.classList.remove('is-active');
+            }
+        });
+    });
+})();