05.js

// Check if two dates are within 1 hour from each other

// Write a function that takes two date instances as argument
// It should return true if the difference between the dates is less than or equal to 1 hour
// It should return false otherwise

function myFunction(a, b) {
  //   return Math.abs(+a - +b) <= 60 * 60 * 1000;
  return Math.abs(a.getTime() - b.getTime()) <= 60 * 60 * 1000;

  // AUTHOR'S:
  //   return Math.abs( a - b) / 1000 / 60 <= 60;
}

console.log(
  myFunction(new Date("2000/01/01 08:00:00"), new Date("2000/01/01 08:45:00"))
); // true
console.log(
  myFunction(new Date("2000/01/01 09:00:00"), new Date("2000/01/01 08:45:00"))
); // true
console.log(
  myFunction(new Date("2000/01/01 08:00:00"), new Date("2000/01/01 09:45:00"))
); // false
console.log(
  myFunction(new Date("2000/01/01 08:00:00"), new Date("2000/01/01 09:00:00"))
); // true