//合法性验证

        function checkValidity() {

            var userNameCheck = $("#userNameCheck").attr('checked');

            var dateCheck = $("#dateCheck").attr('checked');

            var descCheck = $("#descCheck").attr('checked');

            if (!userNameCheck && !dateCheck && !descCheck) {

                alert("至少要勾选一个");

                return false;

            }

            return true;

        }

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

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

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

                if (!checkUserName && !checkOperateTime && !checkdescriptionInclude) {

                    alert("至少选择一种条件查询");

                    return;

                }