check box value

Question

in my application need to select  one from bus type.i.e,AC or NonAC


here i am writing the code like this but unable to get selected checkbox value.if anyone knows how to get selected checkbox value.

  $(function () {

                $('#chkType').click(function () {

                    var checked = $("#chkType").is(':checked');

                    alert(checked); return false; 
    });
});