var $inputs = $('#item_quantity_hidden, #item_quantity');
$inputs.on('change',function(){
    $inputs.val($(this).val());
});

var $expInputs = $('#item_exp_hidden, #item_exp');
$expInputs.on('change',function(){
    $expInputs.val($(this).val());
});

var $qtyInputs = $('#item_qty_hidden, #item_qty');
$qtyInputs.on('change',function(){
    $qtyInputs.val($(this).val());
});

var $supplier = $('#select-supplier-hidden, #select-supplier');
$supplier.on('change',function(){
    $supplier.val($(this).val());
});