vue.js实现简单购物车功能

'use strict'
 
var app = new Vue({
 el: '#app',
 data: {
 list: [
  {
  id: 1,
  name: 'iPhone 7',
  price: 6188,
  count: 1,
  check: true,
  },
  {
  id: 2,
  name: 'iPad Pro',
  price: 5888,
  count: 1,
  check: false,
  },
  {
  id: 3,
  name: 'MacBook Pro',
  price: 21488,
  count: 1,
  check: true,
  },
 ]
 },
 methods: {
 remove: function (index) { //移除商品
  this.list.splice(index, 1);
 },
 reduce: function (index) { //减少商品
  this.list[index].count --;
 },
 add: function (index) { //增加商品
  this.list[index].count ++;
 },
 selAll: function () { //商品全选
  let isAll = document.querySelector('#all');
 
  if (isAll.checked == true) {
  this.list.forEach(function(item, index) {
   item.check = true;
  }) 
  } else {
  this.list.forEach(function(item, index) {
   item.check = false;
  }) 
  }
 }
 },
 computed: {
 totalPrices: function () { //计算总价
  let totalPrices = 0;
 
  this.list.forEach(function (val, index) {
  if (val.check == true)
   totalPrices += parseFloat(val.price * val.count);
  })
 
  return totalPrices.toString().replace(/\B(&＃63;=(\d{3})+$)/g, ','); //每三位数中间加一个‘，'
 }
 }
})

[v-cloak] {
 display: none; 
}
 
#app {
 width: 500px;
 margin: 0 auto;
}
 
table {
 width: 100%;
 border: 1px solid #444;
 border-collapse: collapse;
}
 
th, td {
 padding: 8px 16px;
 border: 1px solid #444;
 text-align: left;
}
 
th {
 background: #89abd3;
 color: rgb(214, 224, 235);
 font-weight: 600;
 white-space: nowrap;
}