count days js code example

Example 1: subtracting two date objects in javacript

function findDayDifference(date1, date2) {
	// always round down
  return Math.floor((Math.abs(date2-date1))/(1000*60*60*24));
}

Example 2: how to calculate the number of days between two dates in javascript

function javascript (date1, date2) {
   let oned = 24 * 60 * 60 * 1000;
   return Math.ceil((date2 - date1) / oned);
}

function javascript(date1, date2) {
	return new Date(date2 - date1).getDate() - 1
}

function javascript(date1, date2) {
  return Math.ceil((date2 - date1) / 8.64e7);
}