function GetDateStr(AddDayCount) { 

var dd = new Date(); 

dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期 

var y = dd.getFullYear(); 

var m = dd.getMonth()+1;//获取当前月份的日期 

var d = dd.getDate(); 

if (m >= 1 && m <= 9) {

        m = "0" + m;

 }

if (d>= 0 && d<= 9) {

        d= "0" + d;

 }

return y+"-"+m+"-"+d; 

}