从具有日期对象的对象数组中获取具有最早日期的最新对象 [英] Get latest object with oldest date from array of objects with date object

问题描述

这是我的数组的样子

[
 { name: "myname", date: dateObj, value: 2 },
 { name: "othername", date: dateObj, value: 3 },
 { name: "newname", date: dateObj, value: 5 },
]

日期是本地日期对象.

获取日期最旧的一个对象的最聪明方法是什么?有没有比遍历整个数组更好的方法了?

What would be the smartest way to get the one object with the oldest date? Is there a better way than sorting the whole array by looping through?

推荐答案

您可以使用

You can use Array.reduce() to iterate the array, and on each iteration pick the object with the oldest date:

const data = [
 { name: "myname", date: new Date(2016, 5, 1), value: 2 },
 { name: "othername", date: new Date(2018, 6, 1), value: 3 },
 { name: "newname", date: new Date(2017, 12, 1), value: 5 },
];

const result = data.reduce((r, o) => o.date < r.date ? o : r);

console.log(result);

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