javascript - 获取日期数组的时间戳值

Question

我有一个日期数组，其中的日期时间值一直到微秒。

所以我的问题是如何将这些值转换为时间戳值，例如整数或 float 的形式如下类型:

1578032412798

这里我有如下日期数组:

var dates =["2020-14-03 11:14:48.225000","2020-14-03 11:14:48.225000","2020-14-03 11:14:48.226000","2020-14-03 11:14:48.226000","2020-14-03 11:14:48.227000","2020-14-03 11:14:48.227000","2020-14-03 11:14:48.228000","2020-14-03 11:14:48.228000","2020-14-03 11:14:48.228000","2020-14-03 11:14:48.229000","2020-14-03 11:14:48.229000","2020-14-03 11:14:48.229000","2020-14-03 11:14:48.230000","2020-14-03 11:14:48.230000","2020-14-03 11:14:48.230000","2020-14-03 11:14:48.231000","2020-14-03 11:14:48.231000","2020-14-03 11:14:48.231000","2020-14-03 11:14:48.231000","2020-14-03 11:14:48.232000"] ;

我正在尝试以下代码。但它不起作用:

 dates.forEach((e) => {
  var date = e.getTime();
  console.log (date)});

我还尝试实现以下 mwtod。但它只显示几个小时之前的值:

var dateString = dates,
                     dateTimeParts = dateString.split(' '),
                     timeParts = dateTimeParts[1].split(':'),
                     dateParts = dateTimeParts[0].split('-'),
                   date;
                   x = new Date(dateParts[2], parseInt(dateParts[1], 10) - 1, dateParts[0], timeParts[0], timeParts[1]);

mainval  = x.getTime();

Answer 1

您可以使用正则表达式提取日期的年、月和日部分，然后根据重构的字符串以正确的顺序创建新的日期:

var dates = [
  "2020-14-03 11:14:48.225000",
  "2020-14-03 11:14:48.225000", 
  "2020-14-03 11:14:48.226000",
  "2020-14-03 11:14:48.226000",
  "2020-14-03 11:14:48.227000", 
  "2020-14-03 11:14:48.227000",
  "2020-14-03 11:14:48.228000",
  "2020-14-03 11:14:48.228000",
  "2020-14-03 11:14:48.228000",
  "2020-14-03 11:14:48.229000",
  "2020-14-03 11:14:48.229000",
  "2020-14-03 11:14:48.229000",
  "2020-14-03 11:14:48.230000",
  "2020-14-03 11:14:48.230000",
  "2020-14-03 11:14:48.230000",
  "2020-14-03 11:14:48.231000",
  "2020-14-03 11:14:48.231000",
  "2020-14-03 11:14:48.231000",
  "2020-14-03 11:14:48.231000",
  "2020-14-03 11:14:48.232000"
];
res = dates.map(d => {
  m = d.match(/^(\d+)-(\d+)-(\d+) (.*)$/);
  return new Date(`${m[1]}-${m[3]}-${m[2]} ${m[4]}`).getTime();
});
console.log(res);