From e108473c0992a962b0e5ce0a57b6553dde9925e4 Mon Sep 17 00:00:00 2001
From: DCloud_LXH <283700113@qq.com>
Date: Tue, 12 Jul 2022 12:00:14 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=94=B9=E8=BF=9B=20md-virtual=20?=
 =?UTF-8?q?=E9=80=BB=E8=BE=91?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 docs/.vuepress/components/md/virtual.vue | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/docs/.vuepress/components/md/virtual.vue b/docs/.vuepress/components/md/virtual.vue
index 384249348..866bb9132 100644
--- a/docs/.vuepress/components/md/virtual.vue
+++ b/docs/.vuepress/components/md/virtual.vue
@@ -20,10 +20,12 @@
 				[...contentChildren].forEach((child, index) => {
 					if (child.nodeName === 'UL') {
 						const ulHeight = child.clientHeight;
-						const isVisible = visibleHeight + window.scrollY > child.offsetTop - 500;
+						const ulOffsetTop = child.offsetTop;
+						const isVisible = visibleHeight + window.scrollY > ulOffsetTop - 500;
+						const isOver = window.scrollY > ulOffsetTop + ulHeight
 						child.style.height = `${ulHeight}px`;
 
-						if (!isVisible) {
+						if (!isVisible || isOver) {
 							const _ul = document.createDocumentFragment();
 							[...child.children].forEach(item => _ul.appendChild(item));
 							(!this.contentFrame[index] || !this.contentFrame[index].children.length) &&
-- 
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