javascript - 如何从 Array/Angular 中的元素获取最小值

Question

我有以下数组

[
 0: {
  nameId: "041c1119"
  lastError: null
  spotId: "15808822"
  workType: "1"
 },
 1: {
  nameId: "041c1130"
  lastError: null
  spotId: "15808821"
  workType: "1"
 },
 2: {
  nameId: "041c11123"
  lastError: null
  spotId: "15808820"
  workType: "1"
 }
]

我正在尝试获取最低的 spotId 值，在本例中我需要获取 15808820。我将不胜感激任何建议的帮助(使用 lodash 的例子会很棒)谢谢!

Answer 1

不需要任何像Lodash这样的外部库，你可以用纯JS实现结果。

这是使用 ES6 功能的一行代码的解决方案 Array.reduce()方法。

const data = [{
  nameId: "041c1119",
  lastError: null,
  spotId: "15808822",
  workType: "1"
}, {
  nameId: "041c1130",
  lastError: null,
  spotId: "15808821",
  workType: "1"
}, {
  nameId: "041c11123",
  lastError: null,
  spotId: "15808820",
  workType: "1"
}];


const minSpotId = data.reduce((prev, current) => (prev.spotId < current.spotId) ? prev : current);

console.log(minSpotId);