关于js中对当前日期加n天的实现

function AddDays(dayIn) {
var date=new Date();
var myDate=new Date(date.getTime()+dayIn*24*60*60*1000);
var year=myDate.getFullYear();
var month=myDate.getMonth()+1;
var day=myDate.getDate();
CurrentDate=year+"-";
if(month>=10)
{
CurrentDate=CurrentDate+month+"-";
}
else
{
CurrentDate=CurrentDate+"0"+month+"-";
}
if(day>=10)
{
CurrentDate=CurrentDate+day;
}
else
{
CurrentDate=CurrentDate+"0"+day;
}
return CurrentDate;
}