<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="index.css"></head><body><div id='app'> <div v-if="books.length"> <table> <thead> <tr> <th></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> </tr> </thead> <tbody> <tr v-for="(item,index) in books"> <td>{{item.id}}</td> <td>{{item.name}}</td> <td>{{item.data}}</td> <td>{{item.price|getp}}</td><!-- 使用了过滤器--> <td> <button @click="decreasement(index)" :disabled="item.count<=0">-</button> {{item.count}} <button @click="increasment(index)">+</button> </td> <td><button @click="remove(index)">移除</button></td> </tr> </tbody> </table> <h2>总价格:{{totalPrice|getp}}</h2> </div> <h2 v-else>购物车为空</h2></div><script src="vue.js"></script><script src="main.js"></script></body></html>
table{ border: 1px; 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 ;}
const app=new Vue({ el:'#app', data:{ books:[{ id:1, name:"算法导论", data: '2006-1', price:39.00, count:1 },{ id:2, name:"算法导论", data: '2006-1', price:39.00, count:1 },{ id:3, name:"算法导论", data: '2006-1', price:39.00, count:1 },{ id:4, name:"算法导论", data: '2006-1', price:39.00, count:1 }] }, methods:{ getfinalprice(price){ return "$"+price.toFixed(2); }, decreasement(index){ this.books[index].count--; }, increasment(index){ this.books[index].count++; }, remove(index){ this.books.splice(index,1); } }, filters:{ getp(price){ return "$"+price.toFixed(2); } }, computed:{ totalPrice(){ let result=0; for (let i=0;i<this.books.length;i++){ result+=this.books[i].price*this.books[i].count; } return result; } }})
