jQuery Input Control(checkbox, radio, selectbox)

1. checkbox

- 선택된 값 : $("input[name=objname]:checked").val()

- 선택 : $("input[name=objname]").filter("input[value=objvalue]").attr("checked", "checked");

- 해제 : $("input[name=objname]").filter("input[value=objvalue]").attr("checked", "");

- 선택된 갯수: $("input[name=objname]:checkbox:checked").length

2. selectbox

- 선택된 값: $("#objname option:selected").val()

- 선택 : $("#objname optio[value=objvalue]).attr("selected", "true");