VUE realizes shopping settlement function

the code

 <div id="app">
      <div v-if="list.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 list">
              <td>{
   
   {item.id}}</td>
              <td>{
   
   {item.name}}</td>
              <td>{
   
   {item.date}}</td>
              <td>{
   
   {item.price|shouwPrice}}</td>
              <td>
                <button @click="jian(index)" v-bind:disabled="item.count <=1">-</button>
                {
   
   {item.count}}
                <button @click="jia(index)">+</button>
              </td>
              <td><button @click="yichu">移除</button></td>
            </tr>
          </tbody>
        </table>

        <h2>总价格{
   
   {totalPrice|shouwPrice}}</h2>
      </div>
      <h2 v-else>购物车为空</h2>
    </div>

• logic

        methods: {
    
    
          jian(index) {
    
    
            this.list[index].count--

          },
          jia(index) {
    
    
            this.list[index].count++

          },
          yichu(index) {
    
    
            this.list.splice(index, 1)
          }
        },
        filters: {
    
    
          shouwPrice(price) {
    
    
            return '￥' + price.toFixed(2)
          }
        },
        computed: {
    
    
          totalPrice() {
    
    
            let totalPrice = 0
            for (let i = 0; i < this.list.length; i++) {
    
    
              totalPrice += this.list[i].price * this.list[i].count
            }
            return totalPrice
          }
        }

• In the data, each data of the four books is defined

data: {
    
    
          list: [{
    
    
              id: 1,
              name: '三国演义',
              date: '2009-6',
              price: 85.00,
              count: 1
            },
      }

Effect