js 日期形式

/*OBDate str을 date로 변환*/
    var date = new Date();
    var dd = new Date();
    var year = date.getFullYear();
    var remindTime = year + "-" + OBDate;
    var OBDateDate = new Date(remindTime);
    var OBDate = OBDateDate.getUTCFullYear() + "-"+(OBDateDate.getUTCMonth()+1)+"-" + OBDateDate.getUTCDate();
   
    /*OBDate과 TransitDate으로 ARDate계산 */
    var  ARDate, d, t, t2;  
     t = OBDateDate.getTime();  
     t2 = TransitDate * 1000 * 3600 * 24;  
     t+= t2;  
     d = new Date(t);  
     ARDate = d.getUTCFullYear() + "-";  
     ARDate += ("00"+(d.getUTCMonth()+1)).slice(-2) + "-";  
     ARDate += ("00"+d.getUTCDate()).slice(-2);