date calculator between dates code example
Example 1: calculate days between dates
let startDate = "2021-04-01";
let date1 = new Date();
let date2 = new Date(startDate);
let timeInMilisec = date1.getTime() - date2.getTime();
let daysBetweenDates = Math.ceil(timeInMilisec / (1000 * 60 * 60 * 24));
Example 2: How to calculate the difference between two dates
$datetime1 = new DateTime('2020-10-11 16:52:52');
$datetime2 = new DateTime('2020-10-13 16:52:52');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%a days');