From 92c0cec08492d6e5af314720204c1a7885bd0073 Mon Sep 17 00:00:00 2001
From: leejimqiu <leejimqiu@gmail.com>
Date: Wed, 7 Dec 2022 15:16:41 +0800
Subject: [PATCH] fix: resolve backtop demo

---
 src/back-top/_example/back-top.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/back-top/_example/back-top.ts b/src/back-top/_example/back-top.ts
index 73539ca30..14c02e9f6 100644
--- a/src/back-top/_example/back-top.ts
+++ b/src/back-top/_example/back-top.ts
@@ -16,7 +16,7 @@ Page({
 
   onPageScroll(e) {
     if (!this.windowHeight) {
-      this.windowHeight = wx.getSystemInfoSync().windowHeight;
+      this.windowHeight = wx.getSystemInfoSync().windowHeight - 200;
     }
     const isShowBackTop = e.scrollTop > this.windowHeight;
     if (isShowBackTop !== this.data.showBackTop) {