1 源代码 ---HTML

<div class="box">
      <ul>
        <li v-for="(item,index) in goodslist" :key="item.name">
          <div class="radio">
            <input
              type="checkbox"
              :checked="item.checked"
              @click="changechecked($event,item.name)"
            />
            <img :src="item.img" alt="" />
          </div>
          <div class="title">
            <span>{{item.name}}</span>
            <p class="price">￥{{item.price}}</p>
          </div>
          <div class="num-count">
            <button ref="sub" @click="subcount(item.name)">-</button>
            <input type="text" :value="item.count" />
            <button ref="add" @click="addcount(item.name)">+</button>
          </div>
        </li>
      </ul>
      <div class="main">
        <input type="checkbox" v-model="ischecked" @click="allchecked" />
        <div class="sum">￥{{sum}}.00</div>
        <div class="settlement">
          <span @click="settlement">结算({{count}})</span>
        </div>
      </div>
    </div>

 2 ------Css

      * {
        padding: 0;
        margin: 0;
      }
      .box {
        width: 800px;
        height: 800px;
        background-color: pink;
        margin: 0 auto;
      }
      li {
        list-style: none;
      }
      .box ul li {
        height: 100px;
        background-color: #efefef;
        display: flex;
        margin-top: 10px;
        justify-content: space-between;
        align-items: center;
      }
      .box ul li .radio {
        display: flex;
        align-items: center;
      }
      .box ul li .radio img {
        width: 100px;
        height: 100px;
      }
      .box ul li .title {
        width: 500px;
        height: 100px;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
      }
      .box ul li .title span {
        font-size: 16px;
        font-weight: bold;
        padding: 10px 0px;
      }
      .box ul li .title .price {
        font-size: 20px;
        padding: 10px 0px;
      }
      .box .main {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 800px;
        height: 50px;
        background-color: skyblue;
        margin-top: 70px;
      }
      .box .main .sum {
        font-size: 20px;
        font-weight: bold;
      }
      .box .main .settlement {
        width: 100px;
        height: 50px;
        background-color: blanchedalmond;
      }
      .box .main .settlement span {
        line-height: 50px;
        padding-left: 20%;
        font-size: 18px;
        cursor: pointer;
      }
      .box ul li .num-count {
        width: 130px;
        height: 30px;
        background-color: skyblue;
        display: flex;
        justify-content: center;
      }
      .box ul li .num-count input {
        width: 50px;
        outline: none;
        text-align: center;
      }
      .box ul li .num-count button {
        width: 25px;
      }

 3 Vue部分实现

new Vue({
        el: ".box",
        data: {
          sum: 0,
          ischecked: false,
          count: 0,
          goodslist: [
            {
              name: "Redmi Book Pro 15 2022全新12代英特尔处理器 ",
              price: 5599,
              img: "./购物车图片/1.jpg",
              checked: false,
              count: 1,
            },
            {
              name: "Redmi G 2021锐龙版 3050Ti版本",
              price: 5788,
              img: "./购物车图片/2.jpg",
              checked: false,
              count: 1,
            },
            {
              name: "Pro 14 增强版 i5 独显 - Win11",
              price: 4799,
              img: "./购物车图片/3.jpg",
              checked: false,
              count: 1,
            },
            {
              name: "RedmiBook Pro 15 R5/16G/512G 灰",
              price: 4699,
              img: "./购物车图片/4.jpg",
              checked: false,
              count: 1,
            },
          ],
        },
        methods: {
          //单选按钮
          changechecked(e, name) {
            let result = this.goodslist.map((item) => {
              if (name == item.name) {
                item.checked = e.target.checked;
              }
              return item.checked;
            });
            let res = result.every((item) => {
              return item;
            });
            if (res) {
              this.ischecked = true;
            } else {
              this.ischecked = false;
            }
            this.getnewsum();
            this.getnumcount();
          },
          //自减模块
          subcount(name) {
            //count自减
            this.goodslist.filter((item) => {
              if (item.name == name) {
                if (item.count <= 0) return (item.count = 0);
                item.count--;
              }
            });
            this.getnewsum();
            this.getnumcount();
          },
          //自增模块
          addcount(name) {
            //count自增
            this.goodslist.filter((item) => {
              if (item.name == name) {
                item.count++;
              }
            });
            this.getnewsum();
            this.getnumcount();
          },
          //全选按钮
          allchecked(e) {
            if (e.target.checked) {
              this.goodslist.forEach((item) => {
                item.checked = true;
              });
            } else {
              this.goodslist.forEach((item) => {
                item.checked = false;
              });
            }
            this.getnewsum();
            this.getnumcount();
          },
          //弹出框
          settlement() {
            alert("你本次消费" + this.sum + ".00");
          },
          //计算总价
          getnewsum() {
            let num = 0;
            this.goodslist.find((item) => {
              if (item.checked) {
                num += item.price * item.count;
              }
            });
            this.sum = num;
          },
          //计算总数
          getnumcount() {
            let count = 0;
            this.goodslist.find((item) => {
              if (item.checked) {
                count += item.count;
              }
            });
            this.count = count;
          },
        },
      });