Invalid date when parsing with locale it
2
I need to parse a date in the "it" locale with momentjs, and I'm doing this
import moment from 'moment';
import 'moment/locale/it';
moment.locale("it");
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d);
console.log(mm.format("DD MM YYYY"));
What I get is "invalid date" and I don't understand why. Can you help me?
Using the "en" locale (with the date written as 12/20/2018) all is ok
javascript date momentjs
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
|
show 10 more comments
2
I need to parse a date in the "it" locale with momentjs, and I'm doing this
import moment from 'moment';
import 'moment/locale/it';
moment.locale("it");
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d);
console.log(mm.format("DD MM YYYY"));
What I get is "invalid date" and I don't understand why. Can you help me?
Using the "en" locale (with the date written as 12/20/2018) all is ok
javascript date momentjs
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
4
You need to tell Moment what format you're feeding it.let mm = moment(d, "DD/MM/YYYY");
– blex
Dec 27 '18 at 22:14
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
2
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the userPlease enter the date in this format: ...or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking
– blex
Dec 27 '18 at 22:18
1
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
1
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38
|
show 10 more comments
2
2
2
I need to parse a date in the "it" locale with momentjs, and I'm doing this
import moment from 'moment';
import 'moment/locale/it';
moment.locale("it");
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d);
console.log(mm.format("DD MM YYYY"));
What I get is "invalid date" and I don't understand why. Can you help me?
Using the "en" locale (with the date written as 12/20/2018) all is ok
javascript date momentjs
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
I need to parse a date in the "it" locale with momentjs, and I'm doing this
import moment from 'moment';
import 'moment/locale/it';
moment.locale("it");
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d);
console.log(mm.format("DD MM YYYY"));
What I get is "invalid date" and I don't understand why. Can you help me?
Using the "en" locale (with the date written as 12/20/2018) all is ok
javascript date momentjs
javascript date momentjs
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
edited Dec 27 '18 at 22:09
Federico Grandi
2,70021127
2,70021127
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
asked Dec 27 '18 at 22:06
cdarwin
1,45372952
1,45372952
4
You need to tell Moment what format you're feeding it.let mm = moment(d, "DD/MM/YYYY");
– blex
Dec 27 '18 at 22:14
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
2
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the userPlease enter the date in this format: ...or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking
– blex
Dec 27 '18 at 22:18
1
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
1
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38
|
show 10 more comments
4
You need to tell Moment what format you're feeding it.let mm = moment(d, "DD/MM/YYYY");
– blex
Dec 27 '18 at 22:14
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
2
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the userPlease enter the date in this format: ...or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking
– blex
Dec 27 '18 at 22:18
1
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
1
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38
4
4
You need to tell Moment what format you're feeding it.
let mm = moment(d, "DD/MM/YYYY");– blex
Dec 27 '18 at 22:14
You need to tell Moment what format you're feeding it.
let mm = moment(d, "DD/MM/YYYY");– blex
Dec 27 '18 at 22:14
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
2
2
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the user
Please enter the date in this format: ... or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking– blex
Dec 27 '18 at 22:18
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the user
Please enter the date in this format: ... or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking– blex
Dec 27 '18 at 22:18
1
1
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
1
1
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38
|
show 10 more comments
1 Answer
1
active
oldest
votes
2
The below snippet will accomplish what you want. It takes moment's date format for a given local and passes it to the constructor when creating a moment.
With that said, the comments above raise a lot of good points and this is not a reliable way to be handling dates.
For example, if someone in Italy entered a date string in the en MM/DD/YYYY format this would break
let localeFormat = moment.localeData('it').longDateFormat('L');
console.log(localeFormat) // DD/MM/YYYY
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d, localeFormat);
console.log(mm.format("DD MM YYYY"));
answered Dec 27 '18 at 22:36
Mike Gillett
536413
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
The below snippet will accomplish what you want. It takes moment's date format for a given local and passes it to the constructor when creating a moment.
With that said, the comments above raise a lot of good points and this is not a reliable way to be handling dates.
For example, if someone in Italy entered a date string in the en MM/DD/YYYY format this would break
let localeFormat = moment.localeData('it').longDateFormat('L');
console.log(localeFormat) // DD/MM/YYYY
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d, localeFormat);
console.log(mm.format("DD MM YYYY"));
answered Dec 27 '18 at 22:36
Mike Gillett
536413
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
add a comment |
2
The below snippet will accomplish what you want. It takes moment's date format for a given local and passes it to the constructor when creating a moment.
With that said, the comments above raise a lot of good points and this is not a reliable way to be handling dates.
For example, if someone in Italy entered a date string in the en MM/DD/YYYY format this would break
let localeFormat = moment.localeData('it').longDateFormat('L');
console.log(localeFormat) // DD/MM/YYYY
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d, localeFormat);
console.log(mm.format("DD MM YYYY"));
answered Dec 27 '18 at 22:36
Mike Gillett
536413
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
add a comment |
2
2
2
The below snippet will accomplish what you want. It takes moment's date format for a given local and passes it to the constructor when creating a moment.
With that said, the comments above raise a lot of good points and this is not a reliable way to be handling dates.
For example, if someone in Italy entered a date string in the en MM/DD/YYYY format this would break
let localeFormat = moment.localeData('it').longDateFormat('L');
console.log(localeFormat) // DD/MM/YYYY
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d, localeFormat);
console.log(mm.format("DD MM YYYY"));
answered Dec 27 '18 at 22:36
Mike Gillett
536413
The below snippet will accomplish what you want. It takes moment's date format for a given local and passes it to the constructor when creating a moment.
With that said, the comments above raise a lot of good points and this is not a reliable way to be handling dates.
For example, if someone in Italy entered a date string in the en MM/DD/YYYY format this would break
let localeFormat = moment.localeData('it').longDateFormat('L');
console.log(localeFormat) // DD/MM/YYYY
let d = "20/12/2018"; // 20 dec 2018
let mm = moment(d, localeFormat);
console.log(mm.format("DD MM YYYY"));
answered Dec 27 '18 at 22:36
Mike Gillett
536413
edited Dec 27 '18 at 22:42
answered Dec 27 '18 at 22:36
Mike Gillett
536413
answered Dec 27 '18 at 22:36
Mike Gillett
536413
answered Dec 27 '18 at 22:36
Mike Gillett
536413
536413
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
add a comment |
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
this is what I thought Moment could do
– cdarwin
Dec 27 '18 at 22:42
add a comment |
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4
You need to tell Moment what format you're feeding it.
let mm = moment(d, "DD/MM/YYYY");– blex
Dec 27 '18 at 22:14
And if I don't know the format? The format depends on the locale, and I don't know what locale the user will be using
– cdarwin
Dec 27 '18 at 22:16
2
Is this part of a form to be filled by a user? If so, I don't know of any website that does not tell the user
Please enter the date in this format: ...or uses a calendar widget so that the user does not even have to think about it. Edit: I'm not judging, I'm just asking– blex
Dec 27 '18 at 22:18
1
do not rely over their locale for storing the date, but format it using their locale when you are displaying it. You can instead store it in a single way (standard format, ms, etc...)
– quirimmo
Dec 27 '18 at 22:23
1
Some browsers allow setting a language, I don't know any that allow setting different regional settings to the host system. The point is that date formatting for input and output in general is not necessarily dependent on those settings. For example, The Daily Mail, a British newspaper, writes the date on the front page as "Thursday, December 27, 2018". The Times on its web site uses "27 December 2018". Both are very British.
– RobG
Dec 27 '18 at 22:38