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原生购物车 Vue 改写
lucaslwk
Original
295 people have browsed it

原生购物车 Vue 改写

vue购物车

  1. <!DOCTYPE html>
  2. <html lang="en">
  3.   <head>
  4.     <meta charset="UTF-8" />
  5.     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  6.     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  7.     <title>购物车</title>
  8.     <link rel="stylesheet" href="static/shoppingcart.css" />
  9.     <script src="https://unpkg.com/vue@next"></script>
  10.   </head>
  11.   <body>
  12.     <div class="box">
  13.       <ul class="list" @change="update">
  14.         <li>
  15.           <span>品名</span><span>数量</span><span>单价</span><span>金额</span>
  16.         </li>
  17.         <itemlist item="手机" price="100"></itemlist>
  18.         <itemlist item="电脑" price="200"></itemlist>
  19.         <itemlist item="相机" price="300"></itemlist>
  20.         <li>
  21.           <span>总计:</span>
  22.           <span class="total-num">{{totalnum}}</span>
  23.           <span class="total-amount">{{totalamount}}</span>
  24.         </li>
  25.       </ul>
  26.       <button class="account">结算</button>
  27.     </div>
  29.     <template id="itemlist">
  30.       <li>
  31.         <span class="content">{{item}}</span>
  32.         <input type="number" min="1" class="num" v-model="num" />
  33.         <span class="price">{{price}}</span>
  34.         <span class="amount">{{payAmount}}</span>
  35.       </li>
  36.     </template>
  38.     <script>
  39.       const app = Vue.createApp({
  40.         data() {
  41.           return {
  42.             totalnum: 0,
  43.             totalamount: 0,
  44.           };
  45.         },
  46.         methods: {
  47.           update() {
  48.             const numarr = [...document.querySelectorAll(".num")].map((item) =>
  49.               parseInt(item.value)
  50.             );
  51.             this.totalnum = numarr.reduce((a, b) => a + b);
  52.             const amountarr = [...document.querySelectorAll(".amount")].map(
  53.               (item) => parseInt(item.innerHTML)
  54.             );
  55.             this.totalamount = amountarr.reduce((a, b) => a + b);
  56.           },
  57.         },
  58.         mounted: function () {
  59.           this.update();
  60.         },
  61.       });
  62.       app.component("itemlist", {
  63.         template: "#itemlist",
  64.         props: ["item", "price"],
  65.         data() {
  66.           return {
  67.             num: 1,
  68.           };
  69.         },
  70.         computed: {
  71.           payAmount() {
  72.             return this.price * this.num;
  73.           },
  74.         },
  75.       });
  76.       app.mount(".box");
  77.     </script>
  78.   </body>
  79. </html>
Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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