From 632a182139711833b98c1ddefe836d9d10d515d2 Mon Sep 17 00:00:00 2001
From: XPoet <i@xpoet.cn>
Date: Wed, 22 Nov 2023 22:34:58 +0800
Subject: [PATCH] perf: optimize a tag anchor jump

---
 source/js/post/toc.js | 26 +-------------------------
 source/js/utils.js    | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 25 deletions(-)

diff --git a/source/js/post/toc.js b/source/js/post/toc.js
index 56fc54fe..655e9c1d 100644
--- a/source/js/post/toc.js
+++ b/source/js/post/toc.js
@@ -43,31 +43,7 @@ function initTOC() {
             const target = document.getElementById(
               decodeURI(element.getAttribute('href')).replace('#', '')
             )
-            element.addEventListener('click', (event) => {
-              event.preventDefault()
-              let winScrollY = window.scrollY
-              winScrollY = winScrollY <= 1 ? -19 : winScrollY
-              let offset = target.getBoundingClientRect().top + winScrollY
-
-              if (!isHideHeader) {
-                offset = offset - 60
-              }
-
-              window.anime({
-                targets: document.scrollingElement,
-                duration: 500,
-                easing: 'linear',
-                scrollTop: offset,
-                complete: () => {
-                  history.pushState(null, document.title, element.href)
-                  if (isHideHeader) {
-                    setTimeout(() => {
-                      KEEP.utils.pageTopDom.classList.add('hide')
-                    }, 150)
-                  }
-                }
-              })
-            })
+            KEEP.utils.title2Top4HTag(element, target, isHideHeader, 500)
             return target
           })
         }
diff --git a/source/js/utils.js b/source/js/utils.js
index 58056f5d..2922304e 100644
--- a/source/js/utils.js
+++ b/source/js/utils.js
@@ -689,6 +689,44 @@ KEEP.initUtils = () => {
         box.className = 'table-container'
         element.wrap(box)
       })
+    },
+
+    // H tag title to top
+    title2Top4HTag(a, h, isHideHeader, duration = 200) {
+      if (a && h) {
+        a.addEventListener('click', (e) => {
+          e.preventDefault()
+          let winScrollY = window.scrollY
+          winScrollY = winScrollY <= 1 ? -19 : winScrollY
+          let offset = h.getBoundingClientRect().top + winScrollY
+
+          if (!isHideHeader) {
+            offset = offset - 60
+          }
+
+          window.anime({
+            targets: document.scrollingElement,
+            duration,
+            easing: 'linear',
+            scrollTop: offset,
+            complete: () => {
+              history.pushState(null, document.title, a.href)
+              if (isHideHeader) {
+                setTimeout(() => {
+                  KEEP.utils.pageTopDom.classList.add('hide')
+                }, 160)
+              }
+            }
+          })
+        })
+      }
+    },
+
+    // A tag anchor jump handle
+    aAnchorJump() {
+      document.querySelectorAll('a.headerlink').forEach((a) => {
+        this.title2Top4HTag(a, a, this.isHideHeader)
+      })
     }
   }
 
@@ -707,4 +745,5 @@ KEEP.initUtils = () => {
   KEEP.utils.trimPostMetaInfoBar()
   KEEP.utils.closeWebsiteAnnouncement()
   KEEP.utils.wrapTableWithBox()
+  KEEP.utils.aAnchorJump()
 }