Jquery use get() of val()

function getTotal() {
f = $("input[name=chk]");
for(i=0;i alert(f.get(i).val()); // ---> error
}

}

How can I get value of i element ???

[jquery] radio button II

html;
r1
r2
r3

jquery;
_fs_type= '10';
$("input[name=FS_type]").filter('[value='+_fs_type+']').attr('checked',true);


description;
set radio button 'r1' and checked it.