javascript difference between two dates in days
/* difference between date1 and date2 in days (date2 - date1) */ /* date1 and date 2 are already javascript date objects */ function dateDifference(date2, date1) { const _MS_PER_DAY = 1000 * 60 * 60 * 24; // Discard the time and time-zone information. const utc1 = Date.UTC(date1.getFullYear(), date1.getMonth(), date1.getDate()); const utc2 = Date.UTC(date2.getFullYear(), date2.getMonth(), date2.getDate()); return Math.floor((utc2 - utc1) / _MS_PER_DAY); }