正則表達式驗證銀行卡號

 BPM.blockUI({ target: $("#blockAddDiv"), boxed: true, message: FeekongLan.label.loadmsg });//增加鎖定
                        var pattern = /^([1-9]{1})(\d{14}|\d{18})$/,
	                    str = $("#CardCode").val().replace(/\s+/g, "");
                        if (!pattern.test(str)) {
                            var msgModel = { MsgType: "warning", msg: "請正確輸入銀行卡號！", result: false, msgTitle: "系統提示" };
                            BPM.ShowMsg(msgModel);
                            $("#CardCode").focus();
                            BPM.unblockUI($("#blockAddDiv")); //解除鎖定
                            return false;
                        }

銀行卡首位非0，位數也不同