Remove some jquery

core/templates/core/base.jinja

@@ -125,15 +125,14 @@
           navbar.style.setProperty("display", current === "none" ? "block" : "none");
         }
 
-        $(document).keydown(function (e) {
-          if ($(e.target).is('input')) { return }
-          if ($(e.target).is('textarea')) { return }
-          if ($(e.target).is('select')) { return }
-          if (e.keyCode === 83) {
-            $("#search").focus();
-            return false;
+        document.addEventListener("keydown", (e) => {
+          // Looking at the `s` key when not typing in a form
+          if (e.keyCode !== 83 || ["INPUT", "TEXTAREA", "SELECT"].includes(e.target.nodeName)) {
+            return;
           }
-        });
+          document.getElementById("search").focus();
+          e.preventDefault(); // Don't type the character in the focused search input
+        })
       </script>
     {% endblock %}
   </body>