$("#date_range").daterangepicker({
		        onChange: function(){
			//計算天數
			var get_value = $.parseJSON( $("#date_range").val() );
			var travelDays = moment(get_value.end).diff(moment(get_value.start), 'days')+1;
			$("#start_date").val(get_value.start);
			$("#end_date").val(get_value.end);
			$("#travel_day").val(travelDays);
            $("#travel_days").html(travelDays);

			rentDays = parseInt(travelDays);


		},
		datepickerOptions: {
			numberOfMonths: 2,
			minDate: +7,
			firstDay: 0
		}
	});