diff -u b/core/misc/tabledrag.js b/core/misc/tabledrag.js
--- b/core/misc/tabledrag.js
+++ b/core/misc/tabledrag.js
@@ -433,7 +433,7 @@
             self.rowObject.indent(0);
             window.scrollBy(0, -parseInt(item.offsetHeight, 10));
           }
-          handle.get(0).focus(); // Regain focus after the DOM manipulation.
+          handle.trigger('focus'); // Regain focus after the DOM manipulation.
         }
         break;
       case 39: // Right arrow.
@@ -475,7 +475,7 @@
             self.rowObject.indent(0);
             window.scrollBy(0, parseInt(item.offsetHeight, 10));
           }
-          handle.get(0).focus(); // Regain focus after the DOM manipulation.
+          handle.trigger('focus'); // Regain focus after the DOM manipulation.
         }
         break;
     }
diff -u b/core/modules/block/block.js b/core/modules/block/block.js
--- b/core/modules/block/block.js
+++ b/core/modules/block/block.js
@@ -106,7 +106,7 @@
         // Modify empty regions with added or removed fields.
         checkEmptyRegions(table, row);
         // Remove focus from selectbox.
-        select.get(0).trigger('blur');
+        select.trigger('blur');
       });
     });
 
diff -u b/core/modules/views/views_ui/js/ajax.js b/core/modules/views/views_ui/js/ajax.js
--- b/core/modules/views/views_ui/js/ajax.js
+++ b/core/modules/views/views_ui/js/ajax.js
@@ -16,7 +16,7 @@
     Drupal.attachBehaviors($(ajax_popup), ajax.settings);
     if (response.url) {
       // Identify the button that was clicked so that .ajaxSubmit() can use it.
-      // We need to do this for both .click() and .mousedown() since JavaScript
+      // We need to do this for both click and mousedown events since JavaScript
       // code might trigger either behavior.
       var $submit_buttons = $('input[type=submit], button', ajax_body);
       $submit_buttons.on('click', function(event) {
diff -u b/core/modules/views/views_ui/js/views-admin.js b/core/modules/views/views_ui/js/views-admin.js
--- b/core/modules/views/views_ui/js/views-admin.js
+++ b/core/modules/views/views_ui/js/views-admin.js
@@ -588,7 +588,7 @@
 
   // Due to conflicts between Drupal core's AJAX system and the Views AJAX
   // system, the only way to get this to work seems to be to trigger both the
-  // .mousedown() and .submit() events.
+  // mousedown and submit events.
   this.addGroupButton.trigger('mousedown');
   this.addGroupButton.trigger('submit');
   event.preventDefault();
@@ -605,9 +605,9 @@
 
   "use strict";
 
-  // For some reason, here we only need to trigger .submit(), unlike for
+  // For some reason, here we only need to trigger submit event, unlike for
   // Drupal.viewsUi.rearrangeFilterHandler.prototype.clickAddGroupButton()
-  // where we had to trigger .mousedown() also.
+  // where we had to trigger mousedown event also.
   jQuery('input#' + event.data.buttonId, this.table).trigger('submit');
   event.preventDefault();
 };