How to get the day of the week in JavaScript
Wednesday, October 1, 2025
Determining the day of the week from a date is essential for scheduling applications, calendar components, and business logic that depends on weekdays.
As the creator of CoreUI, a widely used open-source UI library, I’ve built numerous calendar and scheduling components that require precise weekday calculations.
From my expertise, the most reliable solution is to use the getDay()
method, which returns a number from 0-6 representing the day of the week.
This method is consistent across all browsers and provides the foundation for both numeric and text-based weekday representations.