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javascriptmomentjsluxon

Why is that I'm getting "Invalid DateTime" in the following Luxon/Moment code?

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

Solution

  • 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.