From 4b880a3cd0a1e703972a10e65a763c4ef9c6b117 Mon Sep 17 00:00:00 2001
From: Li Kui <90845831+likui628@users.noreply.github.com>
Date: Mon, 4 Oct 2021 14:11:15 +0800
Subject: [PATCH] increment argument 'value' need default value

---
 docs/guide/advanced/vuex.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/guide/advanced/vuex.md b/docs/guide/advanced/vuex.md
index 83c7dca0e..531ca22a2 100644
--- a/docs/guide/advanced/vuex.md
+++ b/docs/guide/advanced/vuex.md
@@ -158,7 +158,7 @@ const createVuexStore = (initialState) =>
       ...initialState
     },
     mutations: {
-      increment(state, value) {
+      increment(state, value = 1) {
         state.count += value
       }
     }