How to Calculate Business Days Between Two Dates in JavaScript

When working with dates in JavaScript , calculating the difference between two dates is easy if you only need calendar days. But in real business use cases, we often need to calculate business days , also called working days . Business days usually exclude Saturdays and Sundays. In some cases, public holidays also need to be excluded. I created a free online Business Days Calculator for checking this quickly: https://greatuptools.com/business-days-calculator What are business days? Business days