From 0bcd5e669ee240213d6851c42b0f6ef17068903c Mon Sep 17 00:00:00 2001
From: zhaijinglang <zjl13669863311.com>
Date: Sun, 28 Jun 2026 20:29:57 +0800
Subject: [PATCH] =?UTF-8?q?refactor:=20=E5=B0=86javascript=E7=89=88?=
 =?UTF-8?q?=E6=9C=AC=E5=8D=95=E4=BE=8B=E6=A8=A1=E5=BC=8F=E8=B4=AD=E7=89=A9?=
 =?UTF-8?q?=E8=BD=A6=E6=95=B0=E6=8D=AE=E7=BB=93=E6=9E=84=E6=94=B9=E4=B8=BA?=
 =?UTF-8?q?Map?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...15\225\344\276\213\346\250\241\345\274\217.md" | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git "a/DesignPattern/1-\345\215\225\344\276\213\346\250\241\345\274\217.md" "b/DesignPattern/1-\345\215\225\344\276\213\346\250\241\345\274\217.md"
index 3d643ac..cd0f9bd 100644
--- "a/DesignPattern/1-\345\215\225\344\276\213\346\250\241\345\274\217.md"
+++ "b/DesignPattern/1-\345\215\225\344\276\213\346\250\241\345\274\217.md"
@@ -506,7 +506,7 @@ const PRIVATE_KEY = Symbol();
 
 class ShoppingCartManagerJS {
   static #instance;
-  #products = [];
+  #products = new Map();
 
   constructor(key) {
     if (key !== PRIVATE_KEY) {
@@ -522,15 +522,20 @@ class ShoppingCartManagerJS {
   }
 
   add(name, quantity) {
-    this.#products.push({ name, quantity });
+    if(this.#products.has(name)){
+        this.#products.set(name, this.#products.get(name) + quantity);
+        return;
+    }else{
+        this.#products.set(name, quantity);
+    }
   }
 
   viewCart() {
-    if (this.#products.length === 0) {
+    if (this.#products.size === 0) {
       return;
     }
-    this.#products.forEach((product) => {
-      console.log(`${product.name} ${product.quantity}`);
+    this.#products.forEach((quantity, name) => {
+      console.log(`${name} ${quantity}`);
     });
   }
 }