JavaScript - Create date with format string

Question

In JavaScript would it be possible to create a date using a format string?

Example:

new Date('10/12/2020', 'dd/mm/yyyy');

new Date('12/10/2020', 'mm/dd/yyyy');

new Date('2020/01/20', 'yyyy/mm/dd');

new Date('2020-01-20', 'yyyy-mm-dd');

new Date('2020 01 20', 'yyyy mm dd');

All of those would create a new valid date.

JavaScript's standard library doesn't have anything that does that, no. There are lots of date handling libraries out there (such as Moment) that do, though. @Justinas - No, Date.parse doesn't support a format string (or create a Date, come to that :-) ). — T.J. Crowder
– T.J. Crowder, Commented May 17, 2021 at 8:33
Don't use momentJS though. The project has been deprecated in favour of Luxon — phuzi
– phuzi, Commented May 17, 2021 at 8:38

RGA · Accepted Answer · 2021-05-17 09:06:52Z

1

Javascript does not support creating date with string format. You can use any of the following libraries for formatting,

Example for moment.js :

moment().format('MMMM Do YYYY, h:mm:ss a');
moment(Your date).format('MM/DD/YYYY');

answered May 17, 2021 at 9:06

RGA

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Charlie · Accepted Answer · 2021-05-17 08:50:44Z

0

Trying to parse a string using the Date constructor shouldn't be done. This can give you unpredictable results in different browser platforms.

The best is to use a popular date library like moment.js.

It is as easy as this.

moment(str, 'YYYY-MM-DD')

Here is the phrasing guide: https://momentjs.com/guides/#/parsing/

answered May 17, 2021 at 8:50

Charlie

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