From d5e4cf9ff069671cc593cc0a1daf22bd522a9da0 Mon Sep 17 00:00:00 2001
From: rex <rexkaneki@gmail.com>
Date: Fri, 18 Dec 2020 16:10:11 +0800
Subject: [PATCH] perf(sticky): avoid set data if nothing change (#3879)

---
 packages/sticky/index.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/sticky/index.ts b/packages/sticky/index.ts
index 0aca1cd2..6859ddde 100644
--- a/packages/sticky/index.ts
+++ b/packages/sticky/index.ts
@@ -108,7 +108,9 @@ VantComponent({
           return prev;
         }, {});
 
-        this.setData(diff);
+        if (Object.keys(diff).length > 0) {
+          this.setData(diff);
+        }
 
         this.$emit('scroll', {
           scrollTop: this.scrollTop,