js 时间不足补0

function getNowFormatDate() {

//昨日时间     var day = new Date(new Date().getTime() - 24*60*60*1000);     var Year = 0;     var Month = 0;     var Day = 0;     var CurrentDate = "";     //初始化时间     //Year       = day.getYear();//有火狐下2008年显示108的bug     Year       = day.getFullYear();//ie火狐下都可以     Month      = day.getMonth()+1;     Day        = day.getDate();     CurrentDate += Year;     if (Month >= 10 )     {         CurrentDate += Month;     }     else     {         CurrentDate += "0" + Month;     }     if (Day >= 10 )     {         CurrentDate += Day ;     }     else     {         CurrentDate += "0" + Day ;     }     return CurrentDate; } //获取的时间就会补零 var nowdate = getNowFormatDate();// var dd = new Date(new Date().getTime() - 24*60*60*1000).toLocaleDateString().replace(/\//g,''); //alert(nowdate);