サイドバーを自動スクロール

yuma140902 · Dec 20, 2023 · e4d01df · e4d01df
1 parent 05732bc
commit e4d01df
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/src/shared.js b/src/shared.js
@@ -108,13 +108,19 @@ function handleSidebar() {
     else {
       closeSidebar(sidebar);
     }
-  })
+  });
+
   if (sidebar_open) {
     openSidebar(sidebar);
   }
   else {
     closeSidebar(sidebar);
   }
+
+  const current_page_item = document.querySelector('.sidebar .here');
+  if (!isVisible(current_page_item)) {
+    current_page_item.scrollIntoView({ behavior: 'instant' });
+  }
 }
 
 function openSidebar(sidebar) {
@@ -130,3 +136,9 @@ function closeSidebar(sidebar) {
 function isMobile() {
   return window.matchMedia('(max-width: 768px)').matches;
 }
+
+function isVisible(element) {
+  var rect = element.getBoundingClientRect();
+  var viewHeight = Math.max(document.documentElement.clientHeight, window.innerHeight);
+  return !(rect.bottom < 0 || rect.top - viewHeight >= 0);
+}