/**

 * 计算2个日期相差的天数，不包含今天，如：2016-12-13到2016-12-15，相差2天

 * @param startDateString

 * @param endDateString

 * @returns

 */

function dateDiff(startDateString, endDateString){

	var separator = "-"; //日期分隔符

	var startDates = startDateString.split(separator);

	var endDates = endDateString.split(separator);

	var startDate = new Date(startDates[0], startDates[1]-1, startDates[2]);

	var endDate = new Date(endDates[0], endDates[1]-1, endDates[2]);

	return parseInt(Math.abs(endDate - startDate ) / 1000 / 60 / 60 /24);//把相差的毫秒数转换为天数

};

/**

 * 计算2个日期相差的天数，包含今天，如：2016-12-13到2016-12-15，相差3天

 * @param startDateString

 * @param endDateString

 * @returns

 */

function dateDiffIncludeToday(startDateString, endDateString){

	var separator = "-"; //日期分隔符

	var startDates = startDateString.split(separator);

	var endDates = endDateString.split(separator);

	var startDate = new Date(startDates[0], startDates[1]-1, startDates[2]);

	var endDate = new Date(endDates[0], endDates[1]-1, endDates[2]);

	return parseInt(Math.abs(endDate - startDate ) / 1000 / 60 / 60 /24) + 1;//把相差的毫秒数转换为天数

};