js get difference between two dates

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const getDifference = (date1, date2) => {

  // difference in milliseconds:
  const milliseconds = Math.abs(date2 - date1);

  // difference in days:
  const days = Math.ceil(milliseconds / (1000 * 60 * 60 * 24));

  // display results:
  console.log(milliseconds + ' milliseconds');
  console.log(days + ' day(s)');
}


// Usage example:

const date1 = new Date('Mon Jan 24 2022');
const date2 = new Date('Tue Jan 25 2022');

getDifference(date1, date2);

// Output:
//  86400000 milliseconds
//  1 day(s)