Day49.js

//*
//*
//* Programming Challenge: Date Validation
//? Write a function named isValidDate that takes a single string input representing a date and determines if it is a valid date in the format
//* MM/DD/YYYY. The valid date range should be from January 1, 1900, to December 31, 2099.

//todo Requirements:
//* Format Check: The date must strictly follow the MM/DD/YYYY format. Ensure that slashes (/) are used as separators.
//? Month Validation: Valid months are from 01 (January) to 12 (December).
//? Day Validation: Days should be valid according to the month:

//? 01-31 for January, March, May, July, August, October, December //? 01-30 for April, June, September, November
//? 01-28 for February in common years, and 01-29 for February in leap years

//? Year Validation: Years should be within the range from 1900 to 2099.
const isValidDate = (date) => {
    return /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2[0-8])\/(19|20)\d{2}$/.test(date);
}

console.log(isValidDate("12/15/2021")); // Expected output: true
console.log(isValidDate("02/29/2021")); // Expected output: false
console.log(isValidDate("04/31/2020")); // Expected output: false
console.log(isValidDate("01/01/1800")); // Expected output: false
console.log(isValidDate("13/01/2000")); // Expected output: false
console.log(isValidDate("12/31/2099")); // Expected output: true

//* Constraints:
//? Do not use date parsing libraries; the objective is to validate using regular expressions and conditional