<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link rel="stylesheet" href="./style.css"> </head> <body> <div id="payFor"> <div v-if="this.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="(items,index) in books"> <td>{{items.id}}</td> <td>{{items.name}}</td> <td>{{items.date}}</td> <td>{{items.price|showPrice}}</td> <td> <button @click="decreme(index)">-</button> {{items.count}} <button @click="increme(index)">+</button> </td> <td><button @click="removeHandle">移除</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="./../../vue.min.js"></script> <script src="./main.js"></script> </body> </html>
new Vue({ el:"#payFor", data:{ books:[ { id:1, name:"算法单轮", date:"2006-9", price:66, count:1 }, { id:2, name:"通常讷河", date:"2006-10", price:67, count:1 }, { id:3, name:"立卡DMD", date:"2006-1", price:61, count:1 }, { id:4, name:"撒大声地", date:"2006-5", price:66, count:1 } ] }, methods:{ // getPrice(price){ // return "$"+price.toFixed(2) // }, increme(index){ this.books[index].count++ return this.count }, decreme(index){ if(this.books[index].count>1){ this.books[index].count-- } return this.count }, removeHandle(index){ this.books.splice(index,1); } }, filters:{ showPrice(price){ return "$"+price.toFixed(2) //过滤器 } }, computed:{ totalPrice(){ //普通的for循环 // let totalPrice=0 // for(let i=0;i<this.books.length;i++){ // totalPrice +=this.books[i].price*this.books[i].count // } // return totalPrice //高级的for循环 //let totalPrice=0 // for(let i in this.books){ // totalPrice +=this.books[i].price*this.books[i].count // } // return totalPrice // } //更高级的 let totalPrice=0 for(let items of this.books){ totalPrice+=items.price*items.count } return totalPrice } } })
css
table{ border: 1px solid #e9e9e9; border-spacing: 0; border-collapse: collapse; } th,td{ padding: 8px 16px; border: 1px solid #e9e9e9; } th{ background: #f7f7f7; color: #5c6b77; font-weight: 600; }
效果图
