文本框全选功能

    $("*[name='cbodelAll']").click(function () {
                $("*[name='cbodel']").attr("checked", $(this).attr("checked") ? "checked" : "");
            });
            $("*[name='cbodel']").click(function () {
                var flag = true;
                $("*[name='cbodel']").each(function () {
                    if (flag == true) {
                        flag = $(this).attr("checked");
                    }
                });
                $("*[name='cbodelAll']").attr("checked", flag ? "checked" : "");
            });

cbodelAll 为全选框标识 cbodel为多选框的标识