为什么我在下面的 Luxon/Moment 代码中得到“Invalid DateTime”？

Question

const dt = DateTime.fromISO(new Date(date))
// dt => DateTime {ts: 1516876197386, zone: LocalZone, loc: Locale, invalid: "unparsable", weekData: null, …}
return dt.toFormat('yyyy/mm/dd')

The result is: Invalid DateTime . Why is this and how to fix it?

Luxon's docs: https://moment.github.io/luxon/docs/class/src/datetime.js~DateTime.html#instance-method-toFormat

Answer 1

fromISO :

Create a DateTime from an ISO 8601 string

accepts ISO string, while you are passing a JavaScript Date.

You can use Date's toISOString() or luxon fromJSDate

 const DateTime = luxon.DateTime; const dt = DateTime.fromISO(new Date().toISOString()); console.log(dt.toFormat('yyyy/MM/dd')); const dt2 = DateTime.fromJSDate(new Date()); console.log(dt2.toFormat('yyyy/MM/dd')); 

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

Moreover, note that you have to use uppercase MM to print month instead of lowercase mm that stands for minutes.

Answer 2

您可以像这样使用 fromJSDate： luxon.DateTime.fromJSDate(new Date())