购物车

作者: 知识分享share | 来源:发表于2018-04-02 21:26 被阅读0次

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>vue</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js">
    </script>
    <style>
    </style>
</head>
<body>
<h1>购物车</h1>
    <div id="app-one">
       <ul>
            <li v-for="data in datalist">
                <input type="checkbox" v-model="checkshopcar" :value="data">
                {{data}} 
            </li>
        </ul>
        <p>{{checkshopcar}}</p>
        <p>总额{{sum}}</p>
    </div>
</body>
</html>
<script>
  var vm = new Vue({
        el: "#app-one",
        data:{
            datalist:[
                {
                    name:"衣服aaa",
                    price:10,
                    number:2
                },
                {
                    name:"袜子aaa",
                    price:20,
                    number:3
                },
                {
                    name:"外套aaa",
                    price:100,
                    number:2
                },
            ],
            checkshopcar:[]
        },
        computed:{
            sum(){
                var sum = 0;
                this.checkshopcar.forEach((item,index)=>{
                    sum+=item.price*item.number;
                })
                return sum;
            }
        }
       
    });
</script>