TypeScript：标头/值列表->列出ob对象[关闭]答案

【问题标题】：TypeScript: List of header/value -> List ob objects [closed]TypeScript：标头/值列表->列出ob对象[关闭]
【发布时间】：2021-11-27 11:23:44
【问题描述】：

在 TypeScript 中，是否有一些“不错”的方法可以从键和值数组构建对象列表？

let heads : string [] = ["name", "addr", "age"];
let vals : string [][] = [["sam", "NY", "30"],["chris", "WY", "22"],["sue"," "TX", "55"]];

我需要什么：

[{"name": "sam", "addr": "NY", "age": "30"},
 {"name": "chris", "addr": "WY", "age": "22"},
 {"name": "sue", "addr": "TX", "age": "55"}]

【问题讨论】：

标签： javascript angular typescript

【解决方案1】：

将vals中的每个数组与heads合并，并用Object.fromEntries创建一个对象：

let heads = ["name", "addr", "age"];
let vals = [["sam", "NY", "30"],["chris", "WY", "22"],["sue", "TX", "55"]];

const result = vals.map(val => Object.fromEntries(heads.map((head, idx) => [head, val[idx]])));
console.log(result);

【讨论】：

【解决方案2】：

Array.map可以得到结果。

let heads = ["name", "addr", "age"];
let vals = [["sam", "NY", "30"], ["chris", "WY", "22"], ["sue", "TX", "55"]];

const result = vals.map((item) => {
   let newItem = {};
   item.forEach((value, index)=> {
      newItem[heads[index]] = value;
   });
   return newItem;
});

console.log(result);

【讨论】：