Php+js. using php var in js "for" statement

1

Hi guys,
I have never tried to do this before but i think it can be done.
What i am trying to do is get the js validater to check that all form feilds have been filled in.
The fields are generated form a dd menu. the dd menu is cleared once the new fields are created so i can call on it for count status.
Here is what i have


function validate2() { 
for (var i=0; i < <? $_POST['numOfUpload']; ?>; i++){
// do checks here
}
}

numOfUpload is being passed since this number is used to generate the new feilds.
I keep getting an error sayiong snytax error at line where for() is.
Can someone correct me where i am going wrong.
THanks