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Getting what is the first day of the week based on Locale with momentJs

Using momentJs, can I get the first day of the week (Monday (1), Sunday (7) ...) based on Locale without creating a new moment?

I know that I can access what is the first day of the week for the current language:

moment.locale('uk'); moment().startOf('week').isoWeekday(); //Returns 1 moment.locale('en'); moment().startOf('week').isoWeekday(); //Returns 7

But I think this is a little ugly ...

  • Creating a momentjs object.
  • Go to the first date of the week.
  • Permission of the week.

Any better idea? thanks!

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3 answers

This question has the correct answer in the currentjs current API:

 moment.localeData('en-us').firstDayOfWeek();

As the OP requested, there is no need for an instance of the moment (), nor is it the ugliness of going to the "beginning", a simple simple use of their localeData.

Please note that you may need to download the + locale + locale file, which is significantly larger (44kb) than just the moment (about 12kb).

It seems that from version 2.2.0 more information can be found in their documents: http://momentjs.com/docs/#/i18n/locale-data/

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Looks like you wanted to know the start level of the week ( startOf('week') ) and return its value as isoWeekday , not a date or something else? In this case, your question is the answer.

 moment().startOf('week').isoWeekday();
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Looks like you can just do moment (). locale ('us'). weekday (0) since version 2.1.0 http://momentjs.com/docs/#/get-set/weekday/

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Source: https://habr.com/ru/post/1205883/

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