javascript - javascript indexOf map函数的结果

我正在对数组进行映射以获取其最大值，然后执行indexOf以获取结果的索引：

var dates = [
  {
    "Address": 25,
    "AlertType": 1,
    "Area": "North",
    "MeasureDate": "2019-02-01T00:01:01.001Z",
    "MeasureValue": -1
  },
  {
    "Address": 26,
    "AlertType": 1,
    "Area": "West",
    "MeasureDate": "2023-04-12T15:13:11.733Z",
    "MeasureValue": -1
  },
  {
    "Address": 25,
    "AlertType": 1,
    "Area": "North",
    "MeasureDate": "2017-02-01T00:01:01.001Z",
    "MeasureValue": -1
  }
]

这是我的尝试：

var result = dates
    .map(x => x.MeasureDate)
    .indexOf(new Date(Math.max(
        ...dates.map(a => new Date(a.MeasureDate))
    )))

console.log('latest date', result)

但结果是-1。
我如何解决它以获得正确的结果索引？

最佳答案

一种方法是使用findIndex函数并通过getTime比较日期

const getTime = value => new Date(value).getTime();
const result = dates.findIndex( item => getTime(item.MeasureDate) === Math.max(...dates.map( item => getTime(item.MeasureDate))))