lodash 比较数组中的对象并基于此比较创建一个新对象答案

【问题标题】：lodash comparing objects in an array and create a new object based on this comparisonlodash 比较数组中的对象并基于此比较创建一个新对象
【发布时间】：2020-04-28 00:45:29
【问题描述】：

我有一个对象数组，格式如下：

var res = [
  { StartTime: "04/29/2020 13:30", Status: "free" },
  { StartTime: "04/29/2020 14:00", Status: "free" },
  { StartTime: "04/29/2020 14:30", Status: "free" },
  { StartTime: "04/29/2020 15:00", Status: "free" },
  { StartTime: "04/29/2020 20:00", Status: "free" },
  { StartTime: "04/29/2020 20:30", Status: "free" },
];

现在我想创建一个对象，将这个对象数组拆分为 2 个对象数组，如果 StartTimes 有 30 分钟不同，它们可以保持在一起，否则我将继续创建一个新数组看起来像这样：

var res = [
  [
    { StartTime: "04/29/2020 13:30", Status: "free" },
    { StartTime: "04/29/2020 14:00", Status: "free" },
    { StartTime: "04/29/2020 14:30", Status: "free" },
    { StartTime: "04/29/2020 15:00", Status: "free" },
  ],
  [
    { StartTime: "04/29/2020 20:00", Status: "free" },
    { StartTime: "04/29/2020 20:30", Status: "free" },
  ],
];

我正在使用 moment.js 来查找 2 个日期之间的差异。

【问题讨论】：

标签： javascript momentjs lodash

【解决方案1】：

你可以用普通的 JavaScript 来做，比如：

var res = [
  { StartTime: "04/29/2020 13:30", Status: "free" },
  { StartTime: "04/29/2020 14:00", Status: "free" },
  { StartTime: "04/29/2020 14:30", Status: "free" },
  { StartTime: "04/29/2020 15:00", Status: "free" },
  { StartTime: "04/29/2020 20:00", Status: "free" },
  { StartTime: "04/29/2020 20:30", Status: "free" },
];

let j = 0, result = [], previous;
for (let i = 0; i < res.length; i++) {
  let current = new Date(res[i].StartTime);
  if (previous && current.getTime() - previous.getTime() > 30 * 60 * 1000) j++;
  (result[j] = result[j] || []).push(res[i]);
  previous = current;
}

console.log(result);

【讨论】：