Jquery Date Difference (dd/mm/yyyy)

function process(date){
            var parts = date.split("/");
            return new Date(parts[2], parts[1] - 1, parts[0]);
        }
       
        $('.datechange').change(function(){
            var fromdate = new Date(process($('input[name=from_date]').val()));
            var todate = new Date(process($('input[name=to_date]').val()));
            var timeDiff = Math.abs(todate.getTime() - fromdate.getTime());
            var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24));
            $('.total_days').html(diffDays);
        });