Check if a date is between two other dates

Use the greater than (>) and less than (<) operators to check if date is between dateStart and dateEnd.

const isBetweenDates = (dateStart, dateEnd, date) =>
  date > dateStart && date < dateEnd;

// Examples
isBetweenDates(
  new Date(2010, 11, 20),
  new Date(2010, 11, 30),
  new Date(2010, 11, 19)
); // false

isBetweenDates(
  new Date(2010, 11, 20),
  new Date(2010, 11, 30),
  new Date(2010, 11, 25)
); // true

Source

https://www.30secondsofcode.org/js/s/is-between-dates