How to calculate difference between two dates

maverix
23:14/28.10.2010
5 from possible 5 with 1 votes

var beginDate = new Date(2010, 0, 1); //January the first, 2010
var endDate = new Date(2010, 11, 31); //December 31, 2010

var oneDay = 1000 * 60 * 60 * 24; //in milliseconds

var totalDaysThisYear = (endDate.getTime() - beginDate.getTime()) / oneDay;

getTime returns the milliseconds from 1st January 1970 to the specified date, so we subtract the 2 dates this way and divide by the milliseconds that represent one day to get the result in days.