Modified Bookshelf texts

[bookstack] / resources / assets / js / components / page-display.js

diff --git a/resources/assets/js/components/page-display.js b/resources/assets/js/components/page-display.js
index bca641cb6161e65e77b10bf81630bfe95c24e359..e87966d7dbbcfc7b83b8fc7b596f36e034bbafd2 100644 (file)
--- a/resources/assets/js/components/page-display.js
+++ b/resources/assets/js/components/page-display.js
@@ -184,9 +184,9 @@ class PageDisplay {
 
     setupNavHighlighting() {
         // Check if support is present for IntersectionObserver
-        if (!'IntersectionObserver' in window ||
-            !'IntersectionObserverEntry' in window ||
-            !'intersectionRatio' in window.IntersectionObserverEntry.prototype) {
+        if (!('IntersectionObserver' in window) ||
+            !('IntersectionObserverEntry' in window) ||
+            !('intersectionRatio' in window.IntersectionObserverEntry.prototype)) {
             return;
         }
 
@@ -208,8 +208,8 @@ class PageDisplay {
             let pageNavObserver = new IntersectionObserver(headingVisibilityChange, intersectOpts);
 
             // observe each heading
-            for (let i = 0; i !== headings.length; ++i) {
-                pageNavObserver.observe(headings[i]);
+            for (let heading of headings) {
+                pageNavObserver.observe(heading);
             }
         }
 
@@ -221,14 +221,9 @@ class PageDisplay {
         }
 
         function toggleAnchorHighlighting(elementId, shouldHighlight) {
-            let anchorsToHighlight = pageNav.querySelectorAll('a[href="#' + elementId + '"]');
-            for (let i = 0; i < anchorsToHighlight.length; i++) {
-                // Change below to use classList.toggle when IE support is dropped.
-                if (shouldHighlight) {
-                    anchorsToHighlight[i].classList.add('current-heading');
-                } else {
-                    anchorsToHighlight[i].classList.remove('current-heading');
-                }
+            const anchorsToHighlight = pageNav.querySelectorAll('a[href="#' + elementId + '"]');
+            for (let anchor of anchorsToHighlight) {
+                anchor.closest('li').classList.toggle('current-heading', shouldHighlight);
             }
         }
     }