How to convert a german date string into a date correctly?

Question

I have a string, which I want to convert to a Date;

let dateStr = "01.04.1990"
let date = new Date(dateStr);

but if I try to console log the date I get Thu Jan 04 1990 00:00:00. As you see day and month are switched but why? How would I convert that string correctly?

Answer 1

You could reorder the values for an ISO date string and get the instance with this value.

let dateStr = "01.04.1990"
let date = new Date(dateStr.replace(/(.*)\.(.*)\.(.*)/, '$3-$2-$1'));

console.log(date);

Answer 2

In genereal Date.parse() is expecting an ISO-8601 formatted date string.

A recommendable approach would be to use a library like Luxon, as suggested here: stackoverflow