如何在 JavaScript 中按日期对数组进行排序？ [复制]

Question

我在按日期对数组对象中的数组进行排序时遇到问题。

我有一个如下的数组对象。

[
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  },
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  }
]

1-12月数组对象中的数组如何排序，如下。

[
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  },
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  }
]

我请求帮助。

提前谢谢你。

Answer 1

解析字符串以获取 Date 对象，然后是 sort by compare function。

var a = [
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  },
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  }
]

a.sort(function(a,b){
  return new Date(a.plantingDate) - new Date(b.plantingDate)
})

console.log(a)

作为 Barmar commented，

a.sort(function(a,b){
  return a.plantingDate.localeCompare(b.plantingDate);
})

也可以。