Add dayName

snippets/dayName.md

@@ -0,0 +1,20 @@
+---
+title: dayName
+tags: 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.
+
+```js
+const dayName = ( date, locale ) =>
+  date.toLocaleDateString(locale, { weekday: 'long' })
+```
+
+```js
+dayName(new Date()); // 'Saturday'
+dayName(new Date('09/23/2020'), 'de-DE'); // 'Samstag'
+```