如何从键值对数组中获取对象数组

Question

我有一个像这样的数组：

var arr = 
[
["Id", "0011900000YDtPXAA1"],
["Name", "account 50"],
["OwnerId", "005190000023IPPAA2"],
["Industry", "Manufacturing"],
["Phone", "312-552-4450"],
["Id", "0011900000YDtPbAAL"],
["Name", "account 54"],
["OwnerId", "005190000023IPPAA2"],
["Industry", "Manufacturing"],
["Phone", "312-552-4454"]
]

我需要每个子数组都是一个包含一个键值对的对象。

[
{"Id": "0011900000YDtPXAA1"},
{"Name": "account 50"},
...
]

我试过

var objArr = new Map(arr);

这会生成我需要的键值对，但将它们全部放在同一个对象中。如何获得一组由一个k-v对组成的较小对象？

Answer 1

我会做类似的事情：

1。箭头功能

var arr = [
  ["Id", "0011900000YDtPXAA1"],
  ["Name", "account 50"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4450"],
  ["Id", "0011900000YDtPbAAL"],
  ["Name", "account 54"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4454"]
];

const newArr = arr.map(innerArr => ({[innerArr[0]]: innerArr[1]}));

console.log(newArr);

2。不是箭头功能

var arr = [
  ["Id", "0011900000YDtPXAA1"],
  ["Name", "account 50"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4450"],
  ["Id", "0011900000YDtPbAAL"],
  ["Name", "account 54"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4454"]
];

const newArr = arr.map(function (innerArr) { return {[innerArr[0]]: innerArr[1]}; });

console.log(newArr);

map()方法创建一个新数组，其结果是在调用数组中的每个元素上调用提供的函数。

Answer 2

你可以使用传统的for循环来实现这个

var arr = [
  ["Id", "0011900000YDtPXAA1"],
  ["Name", "account 50"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4450"],
  ["Id", "0011900000YDtPbAAL"],
  ["Name", "account 54"],
  ["OwnerId", "005190000023IPPAA2"],
  ["Industry", "Manufacturing"],
  ["Phone", "312-552-4454"]
];

var arr2 = [];

for (var i = 0; i < arr.length; i++) {

  var sub = {};
  
  sub[arr[i][0]] = arr[i][1];

  arr2.push(sub);

}

console.log(arr2);