From 0088da111d5dc271d8dcf2d7a7204b8cf6412abb Mon Sep 17 00:00:00 2001
From: wenrun <110765073+fwr220807@users.noreply.github.com>
Date: Sun, 25 Sep 2022 09:34:54 +0800
Subject: [PATCH] fix(components): [backtop] fix a display bug (#9892)

fix(components): fix a display bug

The component is not hidden when the scroll bar rolls to the top within 300 ms. Add [trailing=true]
attributes to the useThrottleFn() function,that call handleScroll again after the time is up, and
the bug is fixed.

BREAKING CHANGE :
no

closed no
---
 packages/components/backtop/src/backtop.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/components/backtop/src/backtop.vue b/packages/components/backtop/src/backtop.vue
index befa6acae1..65b6cdfbd2 100644
--- a/packages/components/backtop/src/backtop.vue
+++ b/packages/components/backtop/src/backtop.vue
@@ -66,7 +66,7 @@ const handleClick = (event: MouseEvent) => {
   emit('click', event)
 }
 
-const handleScrollThrottled = useThrottleFn(handleScroll, 300)
+const handleScrollThrottled = useThrottleFn(handleScroll, 300, true)
 
 useEventListener(container, 'scroll', handleScrollThrottled)
 onMounted(() => {