javascript add day to date

function addDays(date, days) {
  var result = new Date(date);
  result.setDate(result.getDate() + days);
  return result;
}let date = new Date();
// add a day
date.setDate(date.getDate() + 1);var myCurrentDate=new Date();
var myFutureDate=new Date(myCurrentDate);
    myFutureDate.setDate(myFutureDate.getDate()+ 8);//myFutureDate is now 8 days in the future