var myCurrentDate=new Date();
var myPastDate=new Date(myCurrentDate);
myPastDate.setDate(myPastDate.getDate() - 8);//myPastDate is now 8 days in the pastvar dateOffset = (24*60*60*1000) * 5; //5 days
var myDate = new Date();
myDate.setTime(myDate.getTime() - dateOffset);
var date = new Date();
date.setDate(date.getDate() + days);
date.setMonth(date.getMonth() + months);
date.setFullYear(date.getFullYear() + years);
console.log((date.getMonth() ) + '/' + (date.getDate()) + '/' + (date.getFullYear()));use moment.js