Can't parse date using datefns

Question

I have the following date =>

October 16 at 6:24 PM

I would like to parse this date into a Javascript Date Object using dateFNS

I tried to follow the doc and did

dateFns.parse(stringDate, 'MMMM d [at] h[:]mm a..aaa', new Date())

but it always return me Invalid Date

https://stackblitz.com/edit/typescript-ts9uub?file=index.ts

am I using it wrong ?

I think that means a or aa or aaa - I couldn't make your code work for anything without a year ... until I used the latest version of date-fns (i.e. 2.16.1 as opposed to 1.29.0 that you're using) — Jaromanda X
– Jaromanda X, Commented Oct 27, 2020 at 5:34
it looks like you're trying to use v2.x parse method, but loading 1.x version of datefns - parse did not look like that at all in 1.x — Jaromanda X
– Jaromanda X, Commented Oct 27, 2020 at 5:38
@JaromandaX date-fns.org/v2.16.1/docs/format its supposed to be AM or PM — Crocsx
– Crocsx, Commented Oct 27, 2020 at 6:04
I am using npm version 2.16.1 maybe the fiddle is outdated I will check — Crocsx
– Crocsx, Commented Oct 27, 2020 at 6:04

Jaromanda X · Accepted Answer · 2020-10-27 11:11:26Z

2

use

parsedDate = parse(stringDate, "MMMM d 'at' h':'mm a", new Date());

The documentation states that for AM/PM use a..aaa ... this actually means use 1, 2 or 3 a for AM/PM ... then there's aaaa and even aaaaa I think ...

Also [at] should be 'at' etc

answered Oct 27, 2020 at 11:11

Jaromanda X

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3 Comments

Jaromanda X Over a year ago

and the a..aaa

Dezza Over a year ago

It would be good if this answer could be expanded to say when you might want to use 1, 2 or 3 as - i.e. does a do something different to aa?

Bravo Over a year ago

The documentation and this answer is clear @Dezza a, aa and aaa produce AM or PM - you can use 1, 2 or 3 a and produce the same result

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