From 77e47f14bc1aaa5fd17c4616a2ed0c1a1e6e5264 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8F=B6=E6=9E=97?= <2380303507@qq.com>
Date: Tue, 3 Dec 2024 15:30:24 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4=E4=BD=9C=E4=B8=9A?=
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+#  一、作业
+
+```html
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8" />
+  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>Document</title>
+  <style>
+    * {
+      margin: 0;
+      padding: 0;
+      box-sizing: border-box;
+    }
+
+    .list {
+      width: 990px;
+      margin: 100px auto 0;
+    }
+
+    .item {
+      padding: 15px;
+      transition: all 0.5s;
+      display: flex;
+      border-top: 1px solid #e4e4e4;
+    }
+
+    .item:nth-child(4n) {
+      margin-left: 0;
+    }
+
+    .item:hover {
+      cursor: pointer;
+      background-color: #f5f5f5;
+    }
+
+    .item img {
+      width: 80px;
+      height: 80px;
+      margin-right: 10px;
+    }
+
+    .item .name {
+      font-size: 18px;
+      margin-right: 10px;
+      color: #333;
+      flex: 2;
+    }
+
+    .item .name .tag {
+      display: block;
+      padding: 2px;
+      font-size: 12px;
+      color: #999;
+    }
+
+    .item .price,
+    .item .sub-total {
+      font-size: 18px;
+      color: firebrick;
+      flex: 1;
+    }
+
+    .item .price::before,
+    .item .sub-total::before,
+    .amount::before {
+      content: "¥";
+      font-size: 12px;
+    }
+
+    .item .spec {
+      flex: 2;
+      color: #888;
+      font-size: 14px;
+    }
+
+    .item .count {
+      flex: 1;
+      color: #aaa;
+    }
+
+    .total {
+      width: 990px;
+      margin: 0 auto;
+      display: flex;
+      justify-content: flex-end;
+      border-top: 1px solid #e4e4e4;
+      padding: 20px;
+    }
+
+    .total .amount {
+      font-size: 18px;
+      color: firebrick;
+      font-weight: bold;
+      margin-right: 50px;
+    }
+  </style>
+</head>
+
+<body>
+  <div class="list">
+    <!-- <div class="item">
+        <img
+          src="https://yanxuan-item.nosdn.127.net/84a59ff9c58a77032564e61f716846d6.jpg"
+          alt=""
+        />
+        <p class="name">
+          称心如意手摇咖啡磨豆机咖啡豆研磨机
+          <span class="tag">【赠品】10优惠券</span>
+        </p>
+        <p class="spec">白色/10寸</p>
+        <p class="price">289.90</p>
+        <p class="count">x2</p>
+        <p class="sub-total">579.80</p>
+      </div> -->
+  </div>
+  <div class="total">
+    <div>合计：<span class="amount">1000.00</span></div>
+  </div>
+  <script>
+    // 数据
+    const goodsList = [
+      {
+        id: "4001172",
+        name: "称心如意手摇咖啡磨豆机咖啡豆研磨机",
+        price: 289.9,
+        picture:
+          "https://yanxuan-item.nosdn.127.net/84a59ff9c58a77032564e61f716846d6.jpg",
+        count: 2,
+        spec: { color: "白色" },
+      },
+      {
+        id: "4001009",
+        name: "竹制干泡茶盘正方形沥水茶台品茶盘",
+        price: 109.8,
+        picture:
+          "https://yanxuan-item.nosdn.127.net/2d942d6bc94f1e230763e1a5a3b379e1.png",
+        count: 3,
+        spec: { size: "40cm*40cm", color: "黑色" },
+      },
+      {
+        id: "4001874",
+        name: "古法温酒汝瓷酒具套装白酒杯莲花温酒器",
+        price: 488,
+        picture:
+          "https://yanxuan-item.nosdn.127.net/44e51622800e4fceb6bee8e616da85fd.png",
+        count: 1,
+        spec: { color: "青色", sum: "一大四小" },
+      },
+      {
+        id: "4001649",
+        name: "大师监制龙泉青瓷茶叶罐",
+        price: 139,
+        picture:
+          "https://yanxuan-item.nosdn.127.net/4356c9fc150753775fe56b465314f1eb.png",
+        count: 8,
+        spec: { size: "小号", color: "紫色" },
+        gift: "50g茶叶,清洗球,礼盒",
+      },
+    ];
+    const list = document.querySelector('.list')
+    // 1. 遍历
+    list.innerHTML = goodsList.map(goods => {
+      // 解构对象
+      const {name, price, picture, count, spec, gift} = goods;
+      // 处理规格，拼接成文本
+      const text = Object.values(spec).join('/');
+      //  处理奖品
+      // split 是分割符，可使字符串变数组
+      const giftText = gift ? gift.split(',').map(item => 
+        ` <span class="tag">【赠品】${item}</span>`
+      ).join('') : '';
+
+      // 2. 返回处理好的格式
+      return `<div class="item">
+        <img
+          src="${picture}"
+          alt=""
+        />
+        <p class="name">
+        ${name}
+        ${giftText}
+        </p>
+        <p class="spec">${text}</p>
+        <p class="price">${price.toFixed(2)}</p>
+        <p class="count">x${count}</p>
+        <p class="sub-total">${count * price.toFixed(2)}</p>
+      </div>
+      `;
+
+    }).join('')
+    //   3.合计
+    // reudce用于累加求和
+    document.querySelector('.amount').innerHTML = goodsList.reduce((prev,items)=>{
+      return prev + item.price * item.count;
+    },0).toFixed(2)
+  </script>
+</body>
+
+</html>
+```
+
-- 
Gitee

