两个日期之间的差异和在时间戳中获取结果

var diff = Math.abs(date2.getTime() - date1.getTime());

function getDiff(date1, date2) {
  var diff = Math.abs(date2.getTime() - date1.getTime());
  
  var days = Math.floor(diff / (1000 * 60 * 60 * 24));
  var hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  var minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
  var seconds = Math.floor((diff % (1000 * 60)) / 1000);
  
  return {
    days: days,
    hours: hours,
    minutes: minutes,
    seconds: seconds
  };
}

var date1 = new Date('2022-01-01 00:00:00');
var date2 = new Date('2022-01-02 12:30:00');

var diff = getDiff(date1, date2);
console.log(diff);

{
  days: 1,
  hours: 12,
  minutes: 30,
  seconds: 0
}