购物车案例--过滤器_小码哥呀

大大的周 02-07 5509

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> <link rel="stylesheet" href="style.css"> </head> <body> <div id="app"> <div v-if="books.length"> <table> <thead> <tr> <th>序号</th> <th>书籍名称</th> <th>出版日期</th> <th>价格</th> <th>购买数量</th> <th>操作</th></th> </tr> </thead> <tbody> <tr v-for="(item,index) in books"> <td>{{index+1}}</td> <td>{{item.name}}</td> <td>{{item.date}}</td> <td>{{item.price | showPrice}}</td> <td> <button @click="decrement(index)" v-bind:disabled="item.count<=1">-</button> {{item.count}} <button @click="increment(index)" v-bind:disabled="item.count>=999">+</button> </td> <td> <button @click="removeHandler(index)">删除</button> </td> </tr> </tbody> </table> <h2>总价格：{{totalPrice | showPrice}}</h2> </div> <h2 v-else>购物车为空</h2> </div> <script src="../js/vue.js"></script> <script src="main.js"></script> </body> </html>

js const app = new Vue({ el: '#app', data:{ // count:0, books:[ { id: 1, name: '《算法导论》', date: '2006-9', price: 85.00, count: 1 }, { id: 2, name: '《UNIX编程艺术》', date: '2006-2', price: 59.00, count: 1 }, { id: 3, name: '《编程珠玑》', date: '2008-10', price: 39.00, count: 1 }, { id: 4, name: '《代码大全》', date: '2006-3', price: 128.00, count: 1 }, ] }, //计算属性，函数使用名词进行命名 computed:{ totalPrice(){ let totalPrice = 0; for(let i = 0;i<this.books.length;i++){ totalPrice += this.books[i].price * this.books[i].count; } return totalPrice; } }, methods: { // getFinalPrice(price){ // return '￥' + price.toFixed(2); // }, decrement(index){ console.log('decrement'+index); this.books[index].count--; }, increment(index){ console.log('increment'+index); this.books[index].count++; }, removeHandler(index){ this.books.splice(index,1); } }, // 过滤器 filters: { showPrice(price) { return '￥' + price.toFixed(2); } } })

循环方式1：循环方式2：

循环方式3：

css table { border: 1px solid #e9e9e9; border-collapse: collapse; border-spacing: 0; } th, td { padding: 8px 16px; border: 1px solid #e9e9e9; text-align: left; } th { background-color: #f7f7f7; color: #5c6b77; font-weight: 600; }