From 20f86064c723a999d15158d1848cedd92b9ea5cc Mon Sep 17 00:00:00 2001
From: chvmvd <104971044+chvmvd@users.noreply.github.com>
Date: Wed, 18 Oct 2023 22:51:22 +0900
Subject: [PATCH] Change to compound assignment operator

---
 docs/1-trial-session/09-functions/index.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/docs/1-trial-session/09-functions/index.md b/docs/1-trial-session/09-functions/index.md
index 4af260d0e..de9fdb4b7 100644
--- a/docs/1-trial-session/09-functions/index.md
+++ b/docs/1-trial-session/09-functions/index.md
@@ -93,7 +93,7 @@ function tryToDrive() {
 let guestCount = 0;
 
 function greet() {
-  guestCount = guestCount + 1;
+  guestCount += 1;
   document.write("あなたは" + guestCount + "人目のお客様です。");
 }
 
@@ -112,8 +112,8 @@ let outer = 0;
 
 function increment() {
   let inner = 0;
-  outer = outer + 1;
-  inner = inner + 1;
+  outer += 1;
+  inner += 1;
   document.write(outer); // 1ずつ増える
   document.write(inner); // 常に1
 }