javascript - 将对象数组转换为对象

Question

我有一个分支数组，大致如下所示:

let branches = [
  {
    id: 21,
    name: "Branch 1",
    opening_times: [ {}, {}, {} ] // Array of objects (Monday, Tuesday etc)
  },
  {
    id: 22,
    name "Branch 2"
    opening_times: [ {}, {}, {} ] // Array of objects (Monday, Tuesday etc)
  },
  // .. etc
]

但我想把它变成一个对象，名称作为每个对象的键。

期望的输出:

branches = {
  "Branch 1": {
    id: 21,
    opening_times: [ {}, {}, {} ] // Array of objects (Monday, Tuesday etc)
  },
  "Branch 2": {
    id: 22,
    opening_times: [ {}, {}, {} ] // Array of objects (Monday, Tuesday etc)
  }
}

尝试过:

let newBranches = branches.map(branch => (
  {
    [branch.name]: {
      id: branch.id,
      days: branch.opening_times
    }
  }
));
console.log(newBranches)

当然，映射会给我一个数组输出:

[
  0: {Branch 1: {…}}
  1: {Branch 2: {…}}
]

任何人都可以帮助我指明正确的方向，以获取一个具有 name 键的新对象作为对象本身吗？

Answer 1

通过简单的 reduce() 操作和对象解构:

const branches = [{
    id: 21,
    name: "Branch 1",
    opening_times: []
  },
  {
    id: 22,
    name: "Branch 2",
    opening_times: []
  }
];

const result = branches.reduce((a, {name, ...v}) => (a[name] = v, a), {});

console.log(result);