vue实现简单购物车案例

本文实例为大家分享了vue实现简单购物车的具体代码，供大家参考，具体内容如下

代码：

<!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>
</head>

<body>
  <div id="app">
    <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' ::key="item">
          <td>{{item.id}}</td>
          <td>{{item.name}}</td>
          <td>{{item.date}}</td>
          <td>{{item.price*item.count | getFinalPrice}}</td>
          <td>
            <button @click='reduce(index)' :disabled='item.count <= 1'>-</button>
            {{item.count}}
            <button @click='add(index)'>+</button>

          </td>
          <td>
            <button @click='removeBtn(index)'>移除</button>
          </td>
        </tr>
      </tbody>
    </table>
    <h2 v-if='books!=""'>总价格:{{theSumOf | getFinalPrice}}</h2>
    <h2 v-else>购物车为空</h2>
  </div>
</body>
<script src="../js/vue.min.js"></script>
<script>
  var app = new Vue({
    el: '#app',
    data: {
      books: [
        {
          id: 1,
          name: '计算机应用',
          date: '2006-9',
          price: 85.00,
          count: 1

        },
        {
          id: 2,
          name: 'java应用',
          date: '2006-9',
          price: 10.00,
          count: 1

        },
        {
          id: 3,
          name: '大数据',
          date: '2006-9',
          price: 85.00,
          count: 1

        },
        {
          id: 4,
          name: 'ui设计师',
          date: '2006-9',
          price: 85.00,
          count: 1

        },
      ],
      addAnd:0

    },
    methods: {
      add(index) {
        this.books[index].count++

      },
      reduce(index) {
     
        this.books[index].count--
    
      },
      removeBtn(index) {
        this.books.splice(index, 1)

      }
    },
    components: {

    },
    computed: {

  
      theSumOf: function () {
      //累加计算的第一种方法
        //let sum = 0
        //this.books.forEach(item => {
        // sum += parseInt(item.price)*parseInt(item.count)
        });
        //return sum

 //累加计算的第二种方式
 //let sum = 0
 //for(let i in this.books){
  //sum += this.books[i].price*this.books[i]*count
 }
 //return sum

 //累加计算的第三种方式
 //let sum = 0
 //for(let item of this.books){
 //sum += item.price*item.count
 //}
 //return sum

 //累加计算的第四种方法
 return this.books.reduce(function(preValue,book){
 return preValue + book.price*book.count
 },0)
      }

    },
    filters: {
      getFinalPrice(price) {
        return '￥' + price.toFixed(2)
      },
    }
  });
</script>

<html>

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