Question: how to find time difference in node js?
Answer: function calculateDays(startDate,endDate)
{
var start_date = moment(startDate, 'YYYY-MM-DD HH:mm:ss');
var end_date = moment(endDate, 'YYYY-MM-DD HH:mm:ss');
var duration = moment. duration(end_date. ... 
var days = duration. ... 
return days;
}