JavaScript排序日期后跟时间降序[重复]

Question

我在使用JavaScript按降序排序日期和时间时遇到了一些问题。以下是一些输入：

[{chatroomID: "1", date: "12/26/2017", time: "10:31:32 PM"},
{chatroomID: "2", date: "12/26/2017", time: "10:38:01 PM"},
{chatroomID: "3", date: "12/26/2017", time: "10:35:14 PM"}]

我想按降序对它们进行排序，最新的一个将位于顶部，但我不确定如何进行排序。

所需输出：

[{chatroomID: "2", date: "12/26/2017", time: "10:38:01 PM"},
{chatroomID: "3", date: "12/26/2017", time: "10:35:14 PM"},
{chatroomID: "1", date: "12/26/2017", time: "10:31:32 PM"}]

如果结果来自同一日期，那么我会按照时间排序。否则，最新日期将在上面。有什么想法吗？

谢谢！

Answer 1

只需调整date和time，然后将其解析为Date并获得时间戳。从那以后，这只是简单的旧排序。

const datetimes = [
  {chatroomID: "1", date: "12/26/2017", time: "10:31:32 PM"},
  {chatroomID: "2", date: "12/26/2017", time: "10:38:01 PM"},
  {chatroomID: "3", date: "12/26/2017", time: "10:35:14 PM"}
]

const sorted = datetimes.sort((a, b) => {
  const aDate = new Date(a.date + ' ' + a.time)
  const bDate = new Date(b.date + ' ' + b.time)
  
  return bDate.getTime() - aDate.getTime()
})

console.log(sorted)