仅将日期与 luxon Datetime 进行比较

Question

I have two luxon objects,

let startDate = DateTime.fromISO(startDate)
let someDate = DateTime.fromISO(someDate)

How can I compare if someDate is <= startDate, only the dates, without the time?

Answer 1

要仅比较日期，请使用startOf

startDate.startOf("day") <= someDate.startOf("day")

Answer 2

使用ordinal以整数形式获取一年中的某一天，参见https://moment.github.io/luxon/docs/class/src/datetime.js~DateTime.html#instance-get-ordinal

startDate.ordinal <= someDate.ordinal

Answer 3

Neither of these answers work with leap years. I found success with the following,

function dateTimesAreSameDay(dateTime1, dateTime2) {
  return dateTime1.month === dateTime2.month && dateTime1.day === dateTime2.day;
}

Answer 4

Documentation: https://moment.github.io/luxon/#/math?id=comparing-datetimes

 var DateTime = luxon.DateTime; var d1 = DateTime.fromISO('2017-04-30'); var d2 = DateTime.fromISO('2017-04-01'); console.log(d2 < d1); //=> true console.log(d2 > d1); //=> false

 <script src="https://moment.github.io/luxon/global/luxon.min.js"></script>

Answer 5

Another option presented by this github issue could be to create your own Date class:

Luxon doesn't have any support for [separate Date classes] but it's easy to do through composition: create a Date class that wraps DateTime and exposes the subset of methods you need. You can decide how pure of abstraction you need to provide to your application (ie how much work you want to do to make your wrapper full featured and pure)