How to Calculate the Difference between the 2 date objects

[viralchonkar]

How to calculate the difference between the 2 date objects?
For eg.:
let currentDate = new DateObject();
let previousDate = new DateObject(4,'days');
let difference = previousDate - currentDate; // Which will be 4 in number

Suggestion would help me out.

[shahabyazdi]

You can use toDays() method.

const first = new DateObject();
const second = new DateObject().add(4, "days");

console.log(second.toDays() - first.toDays()); //4

[viralchonkar]

But it will not work in case of days will include multiple months.

Though, We found one Solution to this,

const getDiffInDays = (date1: DateObject, date2: DateObject) => {
let newDate = date1.valueOf();
let newDate1 = date2.valueOf();
let diff = Math.abs(newDate1 - newDate);
return Math.ceil(diff / (1000 * 60 * 60 * 24));
};

Converted the dates in milliseconds and after difference calculated the days.