15aug22DateParse.js

Story

Your online store likes to give out coupons for special occasions. Some customers try to cheat the system by entering invalid codes or using expired coupons.
Task

Your mission:
Write a function called checkCoupon which verifies that a coupon code is valid and not expired.

A coupon is no more valid on the day AFTER the expiration date. All dates will be passed as strings in this format: "MONTH DATE, YEAR".
Examples:

checkCoupon("123", "123", "July 9, 2015", "July 9, 2015")  ===  true
checkCoupon("123", "123", "July 9, 2015", "July 2, 2015")  ===  false


function checkCoupon(enteredCode, correctCode, currentDate, expirationDate){
    return (enteredCode === correctCode &&
           Date.parse(currentDate) <= Date.parse(expirationDate))
  }