javascript - 组合对象数组

Question

我有两个对象数组。我如何将它们组合/连接到一个对象数组中。

我尝试过使用 concat 函数以及遍历 arr2 并将它们推送到 arr1，但我想用更短的方式来代替。

let arr1 = [{
  _id: 1,
  external_id: '74341f74-9c79-49d5-9611-87ef9b6eb75f',
  name: 'Francisca Rasmussen',
  alias: 'Miss Coffey'
 },
  { _id: 19,
    external_id: '68e35e26-7b1f-46ec-a9e5-3edcbcf2aeb9',
    name: 'Francis Rodrigüez',
    alias: 'Mr Lea'
  },
  { _id: 23,
    external_id: 'e9db9277-af4a-4ca6-99e0-291c8a97623e',
    name: 'Francis Bailey',
    alias: 'Miss Singleton'
  }];

let arr2 =   [ { organizations: 'Multron', joining_key: 1 },
  { organizations: 'Bitrex', joining_key: 19 },
  { organizations: 'Enthaze', joining_key: 23 },
  { tickets: 'A Nuisance in Kiribati', joining_key: 1 },
  { tickets: 'A Nuisance in Saint Lucia', joining_key: 19 }
  { tickets: 'A Nuisance in Saint Kilda', joining_key: 19 }
  ]

我想连接它们，根据 arr1 上的 _id 字段 joining_key 给出如下结果:

   [{
  _id: 1,
  external_id: '74341f74-9c79-49d5-9611-87ef9b6eb75f',
  name: 'Francisca Rasmussen',
  alias: 'Miss Coffey',
  organizations: 'Multron',
  tickets: 'A Nuisance in Kiribati', joining_key: 1
},
  { _id: 19,
    external_id: '68e35e26-7b1f-46ec-a9e5-3edcbcf2aeb9',
    name: 'Francis Rodrigüez',
    alias: 'Mr Lea',
    organizations: 'Bitrex',
    tickets: 'A Nuisance in Saint Lucia',
    tickets: 'A Nuisance in Saint Kilda'
  },
  { _id: 23,
    external_id: 'e9db9277-af4a-4ca6-99e0-291c8a97623e',
    name: 'Francis Bailey',
    alias: 'Miss Singleton',
    organizations: 'Enthaze'
  }]

Answer 1

对于这种情况，您可以使用 Object.assign(...arr1)

在 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax 上更多关于传播运算符的引用

let arr1 = [{ _id: 1,
    external_id: '74341f74-9c79-49d5-9611-87ef9b6eb75f',
    name: 'Francisca Rasmussen',
    alias: 'Miss Coffey',
    created_at: '2016-04-15T05:19:46 -10:00'
}];

let arr2 = [ { organizations: 'Multron' },
  { tickets_1: 'A Nuisance in Kiribati' },
  { tickets_2: 'A Nuisance in Saint Lucia' }
  ];
  
  
  arr1 = arr1.concat(arr2)
  //console.log(arr1)
  let result = [Object.assign(...arr1)]
  console.log(result)