cfselect value?

["phunsanit"]

i have cfselect name fcampus_id

 befor build by dataprovider
 i can use var fcampus_id = fcampus_id.value;
 after use pataprovider must used 
 var fdivision_id = fdivision_id.selectedItem.division_id;
 why don't used one way
 or have butter way