diff --git a/core/modules/node/content_types.js b/core/modules/node/content_types.js
index 77ab168bca6..068555d53d0 100644
--- a/core/modules/node/content_types.js
+++ b/core/modules/node/content_types.js
@@ -8,8 +8,12 @@
   "use strict";
 
   /**
+   * Behaviors for setting summaries on content type form.
    *
    * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches summary behaviors on content type edit forms.
    */
   Drupal.behaviors.contentTypes = {
     attach: function (context) {
diff --git a/core/modules/node/node.js b/core/modules/node/node.js
index ebb22ff2456..5dcdc05c29c 100644
--- a/core/modules/node/node.js
+++ b/core/modules/node/node.js
@@ -8,8 +8,12 @@
   "use strict";
 
   /**
+   * Behaviors for tabs in the node edit form.
    *
    * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches summary behavior for tabs in the node edit form.
    */
   Drupal.behaviors.nodeDetailsSummaries = {
     attach: function (context) {
@@ -18,10 +22,11 @@
         var $revisionContext = $(context);
         var revisionCheckbox = $revisionContext.find('.form-item-revision input');
 
-        // Return 'New revision' if the 'Create new revision' checkbox is checked,
-        // or if the checkbox doesn't exist, but the revision log does. For users
-        // without the "Administer content" permission the checkbox won't appear,
-        // but the revision log will if the content type is set to auto-revision.
+        // Return 'New revision' if the 'Create new revision' checkbox is
+        // checked, or if the checkbox doesn't exist, but the revision log does.
+        // For users without the "Administer content" permission the checkbox
+        // won't appear, but the revision log will if the content type is set to
+        // auto-revision.
         if (revisionCheckbox.is(':checked') || (!revisionCheckbox.length && $revisionContext.find('.form-item-revision-log textarea').length)) {
           return Drupal.t('New revision');
         }
diff --git a/core/modules/node/node.preview.js b/core/modules/node/node.preview.js
index d69cf3b2014..ec4883279b0 100644
--- a/core/modules/node/node.preview.js
+++ b/core/modules/node/node.preview.js
@@ -8,10 +8,17 @@
   "use strict";
 
   /**
-   * Disabling all links (except local fragment identifiers such as href="#frag")
-   * in node previews to prevent users from leaving the page.
+   * Disables all non-relevant links in node previews.
+   *
+   * Destroys links (except local fragment identifiers such as href="#frag") in
+   * node previews to prevent users from leaving the page.
    *
    * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches confirmation prompt for clicking links in node preview mode.
+   * @prop {Drupal~behaviorDetach} detach
+   *   Detaches confirmation prompt for clicking links in node preview mode.
    */
   Drupal.behaviors.nodePreviewDestroyLinks = {
     attach: function (context) {
@@ -61,6 +68,9 @@
    * Switch view mode.
    *
    * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches automatic submit on `formUpdated.preview` events.
    */
   Drupal.behaviors.nodePreviewSwitchViewMode = {
     attach: function (context) {
@@ -74,8 +84,10 @@
   };
 
   /**
+   * Theme function for node preview modal.
    *
    * @return {string}
+   *   Markup for the node preview modal.
    */
   Drupal.theme.nodePreviewModal = function () {
     return '<p>' +