Passing a string to new Date() constructor results in Invalid Date

Question

How can I pass a string date from a variable to the new Date(...) constructor? The following code produces Invalid Date. Do I need to convert it first somehow?

var dateString = '18/11/2021';
var dateObject = new Date(dateString);
alert(dateObject);

Does this answer your question? [Format date to MM/dd/yyyy in JavaScript](https://stackoverflow.com/questions/11591854/format-date-to-mm-dd-yyyy-in-javascript) — Bijan, Nov 04 '21 at 15:58

Salman A · Answer 1 · 2021-11-05T10:05:04.827

2

When using the Date(dateString) constructor, the date string must be specified in simplified ISO 8601 date format. Also note that conforming date only formats such as yyyy-mm-dd are treated as UTC, not local. The following should produce the expected result:

alert(new Date("2021-11-18T00:00:00"));

Using any non-standard format is discouraged and the results are implementation specific.

edited Nov 05 '21 at 10:05

answered Nov 04 '21 at 16:03

Salman A

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[Relevant xkcd](https://xkcd.com/1179/) – Niet the Dark Absol Nov 04 '21 at 16:12

score 0 · Answer 2 · answered Nov 04 '21 at 15:59

0

it's your dateString format. First the year, month and then day.

hello = '2021/11/18';
end = new Date(hello);
alert(end);

answered Nov 04 '21 at 15:59

Maik Lowrey

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Passing a string to new Date() constructor results in Invalid Date

2 Answers2