diff --git a/core/misc/autocomplete.js b/core/misc/autocomplete.js
index d272c6c..094d223 100644
--- a/core/misc/autocomplete.js
+++ b/core/misc/autocomplete.js
@@ -222,14 +222,17 @@ Drupal.jsAC.prototype.found = function (matches) {
 
   // Prepare matches.
   var ul = $('<ul></ul>');
-  var ac = this;
+  var ac = this,
+  mouseDown = function () { ac.select(this); },
+  mouseOver = function () { ac.highlight(this); },
+  mouseOut = function () { ac.unhighlight(this); };
   for (var key in matches) {
     if (matches.hasOwnProperty(key)) {
       $('<li></li>')
         .html($('<div></div>').html(matches[key]))
-        .mousedown(function () { ac.select(this); })
-        .mouseover(function () { ac.highlight(this); })
-        .mouseout(function () { ac.unhighlight(this); })
+        .mousedown(mouseDown)
+        .mouseover(mouseOver)
+        .mouseout(mouseOut)
         .data('autocompleteValue', key)
         .appendTo(ul);
     }
@@ -316,7 +319,9 @@ Drupal.ACDB.prototype.search = function (searchString) {
         }
       },
       error: function (xmlhttp) {
-        alert(Drupal.ajaxError(xmlhttp, db.uri));
+        if (window.console) {
+          window.console.log(Drupal.ajaxError(xmlhttp, db.uri));
+        }
       }
     });
   }, this.delay);
diff --git a/core/misc/collapse.js b/core/misc/collapse.js
index 77eb9ff..62a7c0e 100644
--- a/core/misc/collapse.js
+++ b/core/misc/collapse.js
@@ -29,7 +29,7 @@ var isDetailsSupported = (function (doc) {
   root.appendChild(el);
   diff = el.offsetHeight;
   el.open = true;
-  diff = diff != el.offsetHeight;
+  diff = diff !== el.offsetHeight;
   root.removeChild(el);
   if (fake) {
     root.parentNode.removeChild(root);
diff --git a/core/modules/contextual/contextual.js b/core/modules/contextual/contextual.js
index aa80b31..10b8531 100644
--- a/core/modules/contextual/contextual.js
+++ b/core/modules/contextual/contextual.js
@@ -103,7 +103,8 @@ Drupal.contextual.prototype.detachHighlightBehaviors = function () {
 Drupal.contextual.prototype.highlightRegion = function(event) {
   // Set up a timeout to delay the dismissal of the region highlight state.
   if (!event.data.highlight && this.timer === undefined) {
-    return this.timer = window.setTimeout($.proxy($.fn.trigger, $(event.target), 'mouseleave.contextual'), 100);
+    this.timer = window.setTimeout($.proxy($.fn.trigger, $(event.target), 'mouseleave.contextual'), 100);
+    return this.timer;
   }
   // Clear the timeout to prevent an infinite loop of mouseleave being
   // triggered.
diff --git a/core/modules/edit/js/backbone.drupalform.js b/core/modules/edit/js/backbone.drupalform.js
index 9bd2c89..61273f8 100644
--- a/core/modules/edit/js/backbone.drupalform.js
+++ b/core/modules/edit/js/backbone.drupalform.js
@@ -93,7 +93,7 @@ Backbone.syncDirect = function(method, model, options) {
         // Fill in the value in any <input> that isn't hidden or a submit button.
       $form.find(':input[type!="hidden"][type!="submit"]:not(select)')
           // Don't mess with the node summary.
-          .not('[name$="\[summary\]"]').val(value);
+          .not('[name$="\\[summary\\]"]').val(value);
         // Submit the form.
       $form.find('.edit-form-submit').trigger('click.edit');
     };
diff --git a/core/modules/edit/js/views/toolbar-view.js b/core/modules/edit/js/views/toolbar-view.js
index 2075352..cf3783b 100644
--- a/core/modules/edit/js/views/toolbar-view.js
+++ b/core/modules/edit/js/views/toolbar-view.js
@@ -221,7 +221,7 @@ Drupal.edit.views.ToolbarView = Backbone.View.extend({
    */
   onMouseLeave: function(event) {
     var el = this.editor.element[0];
-    if (event.relatedTarget != el && !$.contains(el, event.relatedTarget)) {
+    if (event.relatedTarget !== el && !$.contains(el, event.relatedTarget)) {
       this.editor.element.trigger('mouseleave.edit');
     }
     event.stopPropagation();
diff --git a/core/modules/editor/js/editor.js b/core/modules/editor/js/editor.js
index 32da290..49d0225 100644
--- a/core/modules/editor/js/editor.js
+++ b/core/modules/editor/js/editor.js
@@ -69,7 +69,7 @@ Drupal.behaviors.editor = {
     var editors;
     // The 'serialize' trigger indicates that we should simply update the
     // underlying element with the new text, without destroying the editor.
-    if (trigger == 'serialize') {
+    if (trigger === 'serialize') {
       // Removing the editor-processed class guarantees that the editor will
       // be reattached. Only do this if we're planning to destroy the editor.
       editors = $(context).find('.editor-processed');
diff --git a/core/modules/overlay/overlay-parent.js b/core/modules/overlay/overlay-parent.js
index caf9336..e6e816f 100644
--- a/core/modules/overlay/overlay-parent.js
+++ b/core/modules/overlay/overlay-parent.js
@@ -883,7 +883,7 @@ Drupal.overlay.getDisplacement = function (region) {
   var displacement = 0;
   var lastDisplaced = $('[data-offset-' + region + ']');
   if (lastDisplaced.length) {
-    displacement = parseInt(lastDisplaced.attr('data-offset-' + region));
+    displacement = parseInt(lastDisplaced.attr('data-offset-' + region), 10);
   }
   return displacement;
 };
diff --git a/core/modules/toolbar/js/toolbar.js b/core/modules/toolbar/js/toolbar.js
index 45e91ad..564a9c5 100644
--- a/core/modules/toolbar/js/toolbar.js
+++ b/core/modules/toolbar/js/toolbar.js
@@ -56,7 +56,9 @@ Drupal.behaviors.toolbar = {
       //   when the DOM elements are needed.
       if (Drupal.toolbar.subtrees) {
         for (var id in Drupal.toolbar.subtrees) {
-          $('#toolbar-link-' + id).after(Drupal.toolbar.subtrees[id]);
+          if(typeof id === 'string' || typeof id === 'number') {
+            $('#toolbar-link-' + id).after(Drupal.toolbar.subtrees[id]);
+          }
         }
       }
       // Append a messages element for appending interaction updates for screen
diff --git a/core/modules/translation_entity/translation_entity.admin.js b/core/modules/translation_entity/translation_entity.admin.js
index 7f01944..bd15364 100644
--- a/core/modules/translation_entity/translation_entity.admin.js
+++ b/core/modules/translation_entity/translation_entity.admin.js
@@ -39,7 +39,7 @@ Drupal.behaviors.translationEntityDependentOptions = {
 
       if(!$element) {
         $fields.each(function() {
-          if($(this).val() == $column) {
+          if($(this).val() === $column) {
             $element = $(this);
             return false;
           }
diff --git a/core/modules/views/views_ui/js/ajax.js b/core/modules/views/views_ui/js/ajax.js
index 8595dc8..ef45e24 100644
--- a/core/modules/views/views_ui/js/ajax.js
+++ b/core/modules/views/views_ui/js/ajax.js
@@ -195,7 +195,7 @@
               if (Drupal.viewsUi.resizeModal) {
                 // If the modal is already at the max height, don't bother with
                 // this since the only reason to do it is to grow the modal.
-                if ($('.views-ui-dialog').height() < parseInt($(window).height() * .8)) {
+                if ($('.views-ui-dialog').height() < parseInt($(window).height() * 0.8, 10)) {
                   Drupal.viewsUi.resizeModal('', true);
                 }
               }
diff --git a/core/modules/views/views_ui/js/views-admin.js b/core/modules/views/views_ui/js/views-admin.js
index a8fc481..ff38eb4 100644
--- a/core/modules/views/views_ui/js/views-admin.js
+++ b/core/modules/views/views_ui/js/views-admin.js
@@ -1015,8 +1015,8 @@ Drupal.viewsUi.resizeModal = function (e, no_shrink) {
     return;
   }
 
-  var maxWidth = parseInt($(window).width() * .85); // 70% of window
-  var minWidth = parseInt($(window).width() * .6); // 70% of window
+  var maxWidth = parseInt($(window).width() * 0.85, 10); // 70% of window
+  var minWidth = parseInt($(window).width() * 0.6, 10); // 70% of window
 
   // Set the modal to the minwidth so that our width calculation of
   // children works.
@@ -1024,7 +1024,7 @@ Drupal.viewsUi.resizeModal = function (e, no_shrink) {
   var width = minWidth;
 
   // Don't let the window get more than 80% of the display high.
-  var maxHeight = parseInt($(window).height() * .8);
+  var maxHeight = parseInt($(window).height() * 0.8, 10);
   var minHeight = 200;
   if (no_shrink) {
     minHeight = $modal.height();
@@ -1039,8 +1039,8 @@ Drupal.viewsUi.resizeModal = function (e, no_shrink) {
   // Calculate the height of the 'scroll' region.
   var scrollHeight = 0;
 
-  scrollHeight += parseInt($scroll.css('padding-top'));
-  scrollHeight += parseInt($scroll.css('padding-bottom'));
+  scrollHeight += parseInt($scroll.css('padding-top'), 10);
+  scrollHeight += parseInt($scroll.css('padding-bottom'), 10);
 
   $scroll.children().each(function() {
     var w = $(this).innerWidth();
@@ -1054,8 +1054,8 @@ Drupal.viewsUi.resizeModal = function (e, no_shrink) {
   // will be.
 
   var difference = 0;
-  difference += parseInt($scroll.css('padding-top'));
-  difference += parseInt($scroll.css('padding-bottom'));
+  difference += parseInt($scroll.css('padding-top'), 10);
+  difference += parseInt($scroll.css('padding-bottom'), 10);
   difference += $('.views-override').outerHeight(true);
   difference += $('.views-messages').outerHeight(true);
   difference += $('#views-ajax-title').outerHeight(true);
@@ -1100,7 +1100,7 @@ Drupal.viewsUi.resizeModal = function (e, no_shrink) {
 
 jQuery(function() {
 
-  "use strict"
+  "use strict";
 
   jQuery(window).bind('resize', Drupal.viewsUi.resizeModal);
   jQuery(window).bind('scroll', Drupal.viewsUi.resizeModal);