Get time difference between two dates JavaScript | JS | TS

getTimeDifferenceBetweenTwoDates.test.ts

import { getTimeDifferenceBetweenTwoDates } from './getTimeDifferenceBetweenTwoDates';

describe('getTimeDifferenceBetweenTwoDates', () => {
  it('should return a correct result', () => {
    const date1 = new Date(
      'Thu Nov 24 2022 13:50:50 GMT-0500 (Eastern Standard Time)'
    );
    const date2 = new Date(
      'Thu Nov 25 2022 13:50:50 GMT-0500 (Eastern Standard Time)'
    );

    const hours = 24;
    const minutes = hours * 60;
    const seconds = minutes * 60;

    expect(getTimeDifferenceBetweenTwoDates(date2, date1).hours).toBe(
      hours
    );
    expect(getTimeDifferenceBetweenTwoDates(date2, date1).minutes).toBe(
      minutes
    );
    expect(getTimeDifferenceBetweenTwoDates(date2, date1).seconds).toBe(
      seconds
    );
  });
});

getTimeDifferenceBetweenTwoDates.ts

export const getTimeDifferenceBetweenTwoDates = (date1: Date, date2: Date) => {
  const difference = (date2.getTime() - date1.getTime()) / 1000;

  const hours = Math.abs(Math.round(difference / 60 / 60));
  const minutes = Math.abs(Math.round(difference / 60));
  const seconds = Math.abs(Math.round(difference));

  return {
    hours,
    minutes,
    seconds,
  };
};