将数组转换为 Object 数组的最佳方法是什么，包括数组条目作为 object 键？

Question

Consider the following two arrays:

var array=[
["2021-06-11", 100, 80, 70],
["2021-06-12", 101, 81, 71],
["2021-06-13", 102, 82, 72],
["2021-06-14", 103, 83, 73]]

var keyNames = ["date","a","b","c"];

Target:

var newArray = [{date:"2021-06-11",a:100,b:80,c:70},
                {date:"2021-06-12",a:101,b:81,c:71},
                {date:"2021-06-13",a:102,b:82,c:72},
                {date:"2021-06-14",a:103,b:83,c:73}]

What is the most optimal way to achieve this? can be done with forEach() or a combination with reduce / map prototyping?

I've tried with var obj = Object.assign({}, array) but the result was index as keys

Any help will be appreciated! Thank you for your time!

Answer 1

Can be done using map and forEach.

let newArray = array.map((x) =>{ //map to convert the first array
  let newObj = {};
  let index =0;
  keyNames.forEach((y) =>{ //forEach to loop through keynames
    newObj[y] = x[index++];  
  });
  return newObj;
});