CFP - Docs - dateIsBetween

dateIsBetween

(date1: date, date2: date, opts?: Options) => (aDate: date) => boolean

Test if a date is between two others. Inclusive by default.

Try It

const today = new Date('2025-04-09')
const lastWeek = new Date('2025-04-02')
const isWithinTheLastWeek = dateIsBetween(lastWeek, today)

const yesterday = new Date('2025-04-08')
const tomorrow = new Date('2025-04-10')

isWithinTheLastWeek(yesterday) // is true
isWithinTheLastWeek(tomorrow) // is false
const today = new Date('2025-04-09')
const lastWeek = new Date('2025-04-02')
const isWithinTheLastWeek = dateIsBetween(lastWeek, today)

const yesterday = new Date('2025-04-08')
const tomorrow = new Date('2025-04-10')

isWithinTheLastWeek(yesterday) // is true
isWithinTheLastWeek(tomorrow) // is false

Try It

const today = new Date('2025-04-09')
const lastWeek = new Date('2025-04-02')
const isWithinTheLastWeek = dateIsBetween(
  lastWeek,
  today
)

const yesterday = new Date('2025-04-08')
const tomorrow = new Date('2025-04-10')

isWithinTheLastWeek(yesterday) // is true
isWithinTheLastWeek(tomorrow) // is false
const today = new Date('2025-04-09')
const lastWeek = new Date('2025-04-02')
const isWithinTheLastWeek = dateIsBetween(
  lastWeek,
  today
)

const yesterday = new Date('2025-04-08')
const tomorrow = new Date('2025-04-10')

isWithinTheLastWeek(yesterday) // is true
isWithinTheLastWeek(tomorrow) // is false

We often want to see if a date falls within a range. Below, we see if our registration is active. Note our use of exclusiveMax to ensure the registration deactivates at expiration.

Try It

const registrationStart = new Date('2025-04-09')
const expiration = new Date('2025-05-09')

const isRegistrationActive = dateIsBetween(registrationStart, expiration, {
  exclusiveMax: true,
})

isRegistrationActive(registrationStart) // is true
isRegistrationActive(expiration) // is false
const registrationStart = new Date('2025-04-09')
const expiration = new Date('2025-05-09')

const isRegistrationActive = dateIsBetween(registrationStart, expiration, {
  exclusiveMax: true,
})

isRegistrationActive(registrationStart) // is true
isRegistrationActive(expiration) // is false

Try It

const registrationStart = new Date('2025-04-09')
const expiration = new Date('2025-05-09')

const isRegistrationActive = dateIsBetween(
  registrationStart,
  expiration,
  {
    exclusiveMax: true,
  }
)

isRegistrationActive(registrationStart) // is true
isRegistrationActive(expiration) // is false
const registrationStart = new Date('2025-04-09')
const expiration = new Date('2025-05-09')

const isRegistrationActive = dateIsBetween(
  registrationStart,
  expiration,
  {
    exclusiveMax: true,
  }
)

isRegistrationActive(registrationStart) // is true
isRegistrationActive(expiration) // is false