diff --git a/site/static/docs/4.3/assets/js/src/application.js b/site/static/docs/4.3/assets/js/src/application.js
index 44afd297bd..60680aa721 100644
--- a/site/static/docs/4.3/assets/js/src/application.js
+++ b/site/static/docs/4.3/assets/js/src/application.js
@@ -19,19 +19,18 @@
     return [].slice.call(list)
   }
 
-  var sidenavGroups = document.querySelectorAll('.js-sidenav-group')
-  var groupHasLinks
-  var groupLink
-  sidenavGroups.forEach(sidenavGroup => {
-    groupHasLinks = Boolean(sidenavGroup.querySelector('li'))
-    groupLink = sidenavGroup.querySelector('a')
-    if (groupHasLinks) {
-      groupLink.addEventListener('click', function (e) {
-        e.preventDefault()
-        e.target.parentNode.classList.toggle('active')
-      }, true)
-    }
-  })
+  makeArray(document.querySelectorAll('.js-sidenav-group'))
+    .forEach(function (sidenavGroup) {
+      var groupHasLinks = Boolean(sidenavGroup.querySelector('li'))
+      var groupLink = sidenavGroup.querySelector('a')
+
+      if (groupHasLinks) {
+        groupLink.addEventListener('click', function (e) {
+          e.preventDefault()
+          e.target.parentNode.classList.toggle('active')
+        }, true)
+      }
+    })
 
   // Tooltip and popover demos
   makeArray(document.querySelectorAll('.tooltip-demo'))