javascript - 날짜 차이 계산 함수

var begin = "2017-06-01";

var end = "2017-07-01";

var diffday = getDateDiff(begin, end);

function getDateDiff(date1,date2)

{

    var arrDate1 = date1.split("-");

    var getDate1 = new     Date(parseInt(arrDate1[0]),parseInt(arrDate1[1])-1,parseInt(arrDate1[2]));

    var arrDate2 = date2.split("-");

    var getDate2 = new     Date(parseInt(arrDate2[0]),parseInt(arrDate2[1])-1,parseInt(arrDate2[2]));

   

    var getDiffTime = getDate1.getTime() - getDate2.getTime();

   

    return Math.floor(getDiffTime / (1000 * 60 * 60 * 24));

}

일 차이를 리턴해 준다.