如何从多个数组创建对象数组 [英] How to create an array of objects from multiple arrays

问题描述

给定以下数组:

var ids = [1,2,3]; //Hundreds of elements here
var names = ["john","doe","foo"]; //Hundreds of elements here
var countries = ["AU","USA,"USA"]; //Hundreds of elements here

在性能方面生成具有与此类似结构的对象数组的最佳方法是什么:

What's the best way performance-wise to generate an array of objects with a similar structure to this:

var items = [
    {id:1,name:"john",country:"AU"},
    {id:2,name:"doe",country:"USA"},
    ...
];

推荐答案

您应该能够简单地映射所有 ID，保留对索引的引用，并基于该索引构建您的对象.

You should be able to simply map through all ids, keeping a reference to your index, and build your object based on that index.

var items = ids.map((id, index) => {
  return {
    id: id,
    name: names[index],
    country: countries[index]
  }
});

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