Subtract days from a date in JavaScript

Answer 1

var daysToSubtract = 3;
$.datepicker.formatDate('yy/mm/dd', new Date() - daysToSubtract) ;

Answer 2

var date = new Date();
var day = date.getDate();
var mnth = date.getMonth() + 1;

var fDate = day + '/' + mnth + '/' + date.getFullYear();
document.write('Today is: ' + fDate);
var subDate = date.setDate(date.getDate() - 1);
var todate = new Date(subDate);
var today = todate.getDate();
var tomnth = todate.getMonth() + 1;
var endDate = today + '/' + tomnth + '/' + todate.getFullYear();
document.write('<br>1 days ago was: ' + endDate );

Answer 3

Without using the second variable, you can replace 7 for with your back x days:

let d=new Date(new Date().getTime() - (7 * 24 * 60 * 60 * 1000))

Answer 4

I like the following because it is one line. Not perfect with DST changes but usually good enough for my needs.

var fiveDaysAgo = new Date(new Date() - (1000*60*60*24*5));

Answer 5

You can using Javascript.

var CurrDate = new Date(); // Current Date
var numberOfDays = 5;
var days = CurrDate.setDate(CurrDate.getDate() + numberOfDays);
alert(days); // It will print 5 days before today

For PHP,

$date =  date('Y-m-d', strtotime("-5 days")); // it shows 5 days before today.
echo $date;

Hope it will help you.

Answer 6

I converted into millisecond and deducted days else month and year won't change and logical

var numberOfDays = 10;//number of days need to deducted or added
var date = "01-01-2018"// date need to change
var dt = new Date(parseInt(date.substring(6), 10),        // Year
              parseInt(date.substring(3,5), 10) - 1, // Month (0-11)
              parseInt(date.substring(0,2), 10));
var new_dt = dt.setMilliseconds(dt.getMilliseconds() - numberOfDays*24*60*60*1000);
new_dt = new Date(new_dt);
var changed_date = new_dt.getDate()+"-"+(new_dt.getMonth()+1)+"-"+new_dt.getFullYear();

Hope helps