diff --git a/core/COPYRIGHT.txt b/core/COPYRIGHT.txt
index 618e3de..486b2d3 100644
--- a/core/COPYRIGHT.txt
+++ b/core/COPYRIGHT.txt
@@ -20,7 +20,7 @@ Drupal includes works under other copyright notices and distributed
 according to the terms of the GNU General Public License or a compatible
 license, including:
 
-Javascript
+JavaScript
 
   Farbtastic - Copyright (c) 2010 Matt Farina
 
diff --git a/core/modules/block_content/js/block_content.js b/core/modules/block_content/js/block_content.js
index bbc0533..a30b73b 100644
--- a/core/modules/block_content/js/block_content.js
+++ b/core/modules/block_content/js/block_content.js
@@ -1,6 +1,6 @@
 /**
  * @file
- * Defines Javascript behaviors for the block_content module.
+ * Defines JavaScript behaviors for the block_content module.
  */
 
 (function ($, Drupal) {
diff --git a/core/modules/book/book.js b/core/modules/book/book.js
index 2cc7881..dc4ff2c 100644
--- a/core/modules/book/book.js
+++ b/core/modules/book/book.js
@@ -1,6 +1,6 @@
 /**
  * @file
- * Javascript behaviors for the Book module.
+ * JavaScript behaviors for the Book module.
  */
 
 (function ($, Drupal) {
diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index ecccb74..1123abf 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -147,7 +147,7 @@ function book_form_node_form_alter(&$form, FormStateInterface $form_state, $form
   if ($access) {
     $collapsed = !($node->isNew() && !empty($node->book['pid']));
     $form = \Drupal::service('book.manager')->addFormElements($form, $form_state, $node, $account, $collapsed);
-    // The "js-hide" class hides submit button when Javascript is enabled.
+    // The "js-hide" class hides submit button when JavaScript is enabled.
     $form['book']['pick-book'] = array(
       '#type' => 'submit',
       '#value' => t('Change book (update list of parents)'),
diff --git a/core/modules/content_translation/src/FieldTranslationSynchronizer.php b/core/modules/content_translation/src/FieldTranslationSynchronizer.php
index 8f7584d..0b6d41f 100644
--- a/core/modules/content_translation/src/FieldTranslationSynchronizer.php
+++ b/core/modules/content_translation/src/FieldTranslationSynchronizer.php
@@ -64,7 +64,7 @@ public function synchronizeFields(ContentEntityInterface $entity, $sync_langcode
 
         // If a group was selected has the require_all_groups_for_translation
         // flag set, there are no untranslatable columns. This is done because
-        // the UI adds Javascript that disables the other checkboxes, so their
+        // the UI adds JavaScript that disables the other checkboxes, so their
         // values are not saved.
         foreach (array_filter($translation_sync) as $group) {
           if (!empty($column_groups[$group]['require_all_groups_for_translation'])) {
diff --git a/core/modules/node/content_types.js b/core/modules/node/content_types.js
index eed93f0..53462cb 100644
--- a/core/modules/node/content_types.js
+++ b/core/modules/node/content_types.js
@@ -1,6 +1,6 @@
 /**
  * @file
- * Javascript for the node content editing form.
+ * JavaScript for the node content editing form.
  */
 
 (function ($, Drupal) {
diff --git a/core/modules/node/node.js b/core/modules/node/node.js
index 98af6fd..f1bb06a 100644
--- a/core/modules/node/node.js
+++ b/core/modules/node/node.js
@@ -1,6 +1,6 @@
 /**
  * @file
- * Defines Javascript behaviors for the node module.
+ * Defines JavaScript behaviors for the node module.
  */
 
 (function ($, Drupal, drupalSettings) {
diff --git a/core/modules/outside_in/outside_in.module b/core/modules/outside_in/outside_in.module
index 298b994..d72dc32 100644
--- a/core/modules/outside_in/outside_in.module
+++ b/core/modules/outside_in/outside_in.module
@@ -93,7 +93,7 @@ function outside_in_preprocess_block(&$variables) {
   // The main system block does not contain the block contextual links.
   $variables['#cache']['contexts'][] = 'outside_in_is_applied';
   if ($variables['plugin_id'] !== 'system_main_block' && \Drupal::service('outside_in.manager')->isApplicable()) {
-    // Add class and attributes to all blocks to allow Javascript to target.
+    // Add class and attributes to all blocks to allow JavaScript to target.
     $variables['attributes']['class'][] = 'outside-in-editable';
     $variables['attributes']['data-drupal-outsidein'] = 'editable';
   }
diff --git a/core/modules/system/css/components/js.module.css b/core/modules/system/css/components/js.module.css
index f827020..f6c1c01 100644
--- a/core/modules/system/css/components/js.module.css
+++ b/core/modules/system/css/components/js.module.css
@@ -1,6 +1,6 @@
 /**
  * @file
- * Utility classes to assist with Javascript functionality.
+ * Utility classes to assist with JavaScript functionality.
  */
 
 /**
diff --git a/core/modules/system/src/Tests/Routing/DestinationTest.php b/core/modules/system/src/Tests/Routing/DestinationTest.php
index d959c7a..6b61cc4 100644
--- a/core/modules/system/src/Tests/Routing/DestinationTest.php
+++ b/core/modules/system/src/Tests/Routing/DestinationTest.php
@@ -55,7 +55,7 @@ public function testDestination() {
       [
         'input' => 'javascript:alert(0)',
         'output' => 'javascript:alert(0)',
-        'message' => 'Javascript URL is allowed because it is treated as an internal URL.',
+        'message' => 'JavaScript URL is allowed because it is treated as an internal URL.',
       ],
     ];
     foreach ($test_cases as $test_case) {
diff --git a/core/modules/views/config/schema/views.style.schema.yml b/core/modules/views/config/schema/views.style.schema.yml
index 49de11b..f31f67a 100644
--- a/core/modules/views/config/schema/views.style.schema.yml
+++ b/core/modules/views/config/schema/views.style.schema.yml
@@ -91,7 +91,7 @@ views.style.table:
       label: 'Override normal sorting if click sorting is used'
     sticky:
       type: boolean
-      label: 'Enable Drupal style "sticky" table headers (Javascript)'
+      label: 'Enable Drupal style "sticky" table headers (JavaScript)'
     summary:
       type: label
       label: 'Summary title'
diff --git a/core/modules/views/js/ajax_view.js b/core/modules/views/js/ajax_view.js
index 6422dd0..9a932fb 100644
--- a/core/modules/views/js/ajax_view.js
+++ b/core/modules/views/js/ajax_view.js
@@ -38,7 +38,7 @@
   Drupal.views.instances = {};
 
   /**
-   * Javascript object for a certain view.
+   * JavaScript object for a certain view.
    *
    * @constructor
    *
diff --git a/core/modules/views/src/Plugin/views/style/Table.php b/core/modules/views/src/Plugin/views/style/Table.php
index c49f6e9..ed577db 100644
--- a/core/modules/views/src/Plugin/views/style/Table.php
+++ b/core/modules/views/src/Plugin/views/style/Table.php
@@ -216,7 +216,7 @@ public function buildOptionsForm(&$form, FormStateInterface $form_state) {
 
     $form['sticky'] = array(
       '#type' => 'checkbox',
-      '#title' => $this->t('Enable Drupal style "sticky" table headers (Javascript)'),
+      '#title' => $this->t('Enable Drupal style "sticky" table headers (JavaScript)'),
       '#default_value' => !empty($this->options['sticky']),
       '#description' => $this->t('(Sticky header effects will not be active for preview below, only on live output.)'),
     );
diff --git a/core/modules/views/templates/views-view.html.twig b/core/modules/views/templates/views-view.html.twig
index e81b1ab..a71ffe9 100644
--- a/core/modules/views/templates/views-view.html.twig
+++ b/core/modules/views/templates/views-view.html.twig
@@ -25,7 +25,7 @@
  * - attachment_after: An optional attachment view to be displayed after the
  *   view content.
  * - dom_id: Unique id for every view being printed to give unique class for
- *   Javascript.
+ *   JavaScript.
  *
  * @see template_preprocess_views_view()
  *
diff --git a/core/modules/views_ui/admin.inc b/core/modules/views_ui/admin.inc
index fd031d2..c204ceb 100644
--- a/core/modules/views_ui/admin.inc
+++ b/core/modules/views_ui/admin.inc
@@ -193,7 +193,7 @@ function views_ui_ajax_update_form($form, FormStateInterface $form_state) {
 }
 
 /**
- * Non-Javascript fallback for updating the add view form.
+ * Non-JavaScript fallback for updating the add view form.
  */
 function views_ui_nojs_submit($form, FormStateInterface $form_state) {
   $form_state->setRebuild();
diff --git a/core/themes/stable/css/system/components/js.module.css b/core/themes/stable/css/system/components/js.module.css
index f827020..f6c1c01 100644
--- a/core/themes/stable/css/system/components/js.module.css
+++ b/core/themes/stable/css/system/components/js.module.css
@@ -1,6 +1,6 @@
 /**
  * @file
- * Utility classes to assist with Javascript functionality.
+ * Utility classes to assist with JavaScript functionality.
  */
 
 /**
diff --git a/core/themes/stable/templates/views/views-view.html.twig b/core/themes/stable/templates/views/views-view.html.twig
index 5d372d7..d7c1486 100644
--- a/core/themes/stable/templates/views/views-view.html.twig
+++ b/core/themes/stable/templates/views/views-view.html.twig
@@ -25,7 +25,7 @@
  * - attachment_after: An optional attachment view to be displayed after the
  *   view content.
  * - dom_id: Unique id for every view being printed to give unique class for
- *   Javascript.
+ *   JavaScript.
  *
  * @see template_preprocess_views_view()
  */