diff --git a/core/modules/views_ui/js/views-admin.js b/core/modules/views_ui/js/views-admin.js
index 3cc0f4c..3627fd2 100644
--- a/core/modules/views_ui/js/views-admin.js
+++ b/core/modules/views_ui/js/views-admin.js
@@ -764,7 +764,7 @@
     duplicateGroupsOperator: function () {
       var dropdowns;
       var newRow;
-      var titleRow;
+      var $titleRow;
 
       var titleRows = $('tr.views-group-title').once('duplicateGroupsOperator');
 
@@ -782,21 +782,21 @@
       dropdowns = this.operator;
 
       // Move the operator to a new row just above the second group.
-      titleRow = $('tr#views-group-title-2');
+      $titleRow = $('tr#views-group-title-2');
       newRow = $('<tr class="filter-group-operator-row"><td colspan="5"></td></tr>');
       newRow.find('td').append(this.operator);
-      newRow.insertBefore(titleRow);
+      newRow.insertBefore($titleRow);
       var length = titleRows.length;
       // Starting with the third group, copy the operator to a new row above the
       // group title.
       for (var i = 2; i < length; i++) {
-        titleRow = $(titleRows[i]);
+        $titleRow = $(titleRows[i]);
         // Make a copy of the operator dropdown and put it in a new table row.
         var fakeOperator = this.operator.clone();
         fakeOperator.attr('id', '');
         newRow = $('<tr class="filter-group-operator-row"><td colspan="5"></td></tr>');
         newRow.find('td').append(fakeOperator);
-        newRow.insertBefore(titleRow);
+        newRow.insertBefore($titleRow);
         dropdowns.add(fakeOperator);
       }
 
@@ -856,11 +856,11 @@
           // Make sure the row that just got moved (this.group) is inside one
           // of the filter groups (i.e. below an empty marker row or a
           // draggable). If it isn't, move it down one.
-          var thisRow = $(this.group);
-          var previousRow = thisRow.prev('tr');
+          var $thisRow = $(this.group);
+          var previousRow = $thisRow.prev('tr');
           if (previousRow.length && !previousRow.hasClass('group-message') && !previousRow.hasClass('draggable')) {
             // Move the dragged row down one.
-            var next = thisRow.next();
+            var next = $thisRow.next();
             if (next.is('tr')) {
               this.swap('after', next);
             }