[Javascript] add date

Date.prototype.addDays = function(days) {
    var date = new Date(this.valueOf());
    date.setDate(date.getDate() + days);
    return date;
}

var date = new Date();

console.log(date.addDays(5));

https://stackoverflow.com/questions/563406/how-to-add-days-to-date

How to add days to Date?