From 12a0f9a24cb1d7a248186d462338ae8828bcc54f Mon Sep 17 00:00:00 2001
From: zhbhun <zhbhun@gmail.com>
Date: Wed, 23 Mar 2022 21:52:35 +0800
Subject: [PATCH] fix: fix wrong ternary expression (#10426)

---
 packages/vant/src/composables/use-touch.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/vant/src/composables/use-touch.ts b/packages/vant/src/composables/use-touch.ts
index ffb5e8cc5..0525c42d9 100644
--- a/packages/vant/src/composables/use-touch.ts
+++ b/packages/vant/src/composables/use-touch.ts
@@ -41,7 +41,7 @@ export function useTouch() {
   const move = ((event: TouchEvent) => {
     const touch = event.touches[0];
     // safari back will set clientX to negative number
-    deltaX.value = touch.clientX < 0 ? 0 : touch.clientX - startX.value;
+    deltaX.value = (touch.clientX < 0 ? 0 : touch.clientX) - startX.value;
     deltaY.value = touch.clientY - startY.value;
     offsetX.value = Math.abs(deltaX.value);
     offsetY.value = Math.abs(deltaY.value);