Question

我想添加共同属性，即同一个键的total_quantity_sold，并将其作为总数附加到父索引。

这是我的产品阵列

{ '900001':
   [ anonymous {
       id: '900001',
       name: 'Pack1',
       product: 2017-11-02T13:49:25.596Z,
       total_quantity_sold: '1' },
     anonymous {
       id: '900001',
       name: 'Pack1',
       product: 2018-02-11T13:49:25.596Z,
       total_quantity_sold: '4' },
     anonymous {
       id: '900001',
       name: 'Pack1',
       product: 2017-12-02T13:49:25.596Z,
       total_quantity_sold: '1' } ],
  '900002':
   [ anonymous {
       id: '900002',
       name: 'Pack2',
       product: 2018-01-02T13:49:25.596Z,
       total_quantity_sold: '1' },
     anonymous {
       id: '900002',
       name: 'Pack2',
       product: 2017-11-02T13:49:25.596Z,
       total_quantity_sold: '1' },
     anonymous {
       id: '900002',
       name: 'Pack2',
       product: 2018-02-11T13:49:25.596Z,
       total_quantity_sold: '4' } ],}

我想对所有数量求和并将其与父键相加，以便我的最终数组看起来像这样。实际上我想要填充图形所需的总计数和每个日期的计数。

 { '900001':
       'total' : 6
       [ {
           name: 'Pack1',
           product: 2017-11-02T13:49:25.596Z,
           total_quantity_sold: '1' },
          {
           name: 'Pack1',
           product: 2018-02-11T13:49:25.596Z,
           total_quantity_sold: '4' },
         {

           name: 'Pack1',
           product: 2017-12-02T13:49:25.596Z,
           total_quantity_sold: '1' } ],
      '900002':
       'total' : 7
       [ {

           name: 'Pack2',
           product: 2018-01-02T13:49:25.596Z,
           total_quantity_sold: '2' },
          {

           name: 'Pack2',
           product: 2017-11-02T13:49:25.596Z,
           total_quantity_sold: '1' },
        {

           name: 'Pack2',
           product: 2018-02-11T13:49:25.596Z,
           total_quantity_sold: '4' } ],}

谢谢

Answer 1

当然可以！您可以通过遍历哈希表中的每个条目来完成此操作，并将其替换为您希望就地的目标对象。我们还可以使用简单的缩减器来获得 quantities sold 的总和！

ES7 Way

Object.entries(obj).forEach(a => {
  const [key, children] = a
  const total = children.reduce((p,c) => p+c.total_quantity_sold, 0)
  obj[key] = {total, children}
})

添加子对象的公共属性并使用父键（Node.js）附加它

1 个答案:

ES7 Way