From ac74e1dd33a45874a96fc13efdaade613c44dd70 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 23 Jul 2021 15:44:56 -0400
Subject: [PATCH] fix(v-model): avoid resetting value of in-focus & lazy input

fix #4182
---
 packages/runtime-dom/src/directives/vModel.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/runtime-dom/src/directives/vModel.ts b/packages/runtime-dom/src/directives/vModel.ts
index d489f25a..11fd5376 100644
--- a/packages/runtime-dom/src/directives/vModel.ts
+++ b/packages/runtime-dom/src/directives/vModel.ts
@@ -80,11 +80,14 @@ export const vModelText: ModelDirective<
   mounted(el, { value }) {
     el.value = value == null ? '' : value
   },
-  beforeUpdate(el, { value, modifiers: { trim, number } }, vnode) {
+  beforeUpdate(el, { value, modifiers: { lazy, trim, number } }, vnode) {
     el._assign = getModelAssigner(vnode)
     // avoid clearing unresolved text. #2302
     if ((el as any).composing) return
     if (document.activeElement === el) {
+      if (lazy) {
+        return
+      }
       if (trim && el.value.trim() === value) {
         return
       }