30-seconds-of-code/snippets/dayName.md

title, tags

title	tags
dayName	date,beginner

Gets the name of the weekday from a Date object, optionally for a given locale.

• Use new Date() or new Date('mm/dd/yyyy') to find the weekday.
• Use Date.prototype.toLocaleDateString() with the { weekday: 'long' } option to retrieve the weekday.
• Use the optional second parameter for language specific name. If not used, returns the default locale.

const dayName = ( date, locale ) =>
  date.toLocaleDateString(locale, { weekday: 'long' })

dayName(new Date()); // 'Saturday'
dayName(new Date('09/23/2020'), 'de-DE'); // 'Samstag'