From eb0073c84b01be868f8f2b2d9bc733662afc6d5a Mon Sep 17 00:00:00 2001
From: pany <panyang@mafengwo.com>
Date: Sat, 8 Jun 2024 14:12:48 +0800
Subject: [PATCH] fix(Tab): "scrollLeftTo" function could not handle decimal
 correctly (#12918)

---
 packages/vant/src/tabs/utils.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/vant/src/tabs/utils.ts b/packages/vant/src/tabs/utils.ts
index 5b4cbe08e52..5097279f9b9 100644
--- a/packages/vant/src/tabs/utils.ts
+++ b/packages/vant/src/tabs/utils.ts
@@ -10,13 +10,15 @@ export function scrollLeftTo(
   let count = 0;
   const from = scroller.scrollLeft;
   const frames = duration === 0 ? 1 : Math.round((duration * 1000) / 16);
+  let scrollLeft = from;
 
   function cancel() {
     cancelRaf(rafId);
   }
 
   function animate() {
-    scroller.scrollLeft += (to - from) / frames;
+    scrollLeft += (to - from) / frames;
+    scroller.scrollLeft = scrollLeft;
 
     if (++count < frames) {
       rafId = raf(animate);