正则表达式验证银行卡号

 BPM.blockUI({ target: $("#blockAddDiv"),Boxed: true,message: FeekongLan.label.loadmsg });//增加锁定
                        var pattern = /^([1-9]{1})(\d{14}|\d{18})$/,str = $("#CardCode").val().replace(/\s+/g,"");
                        if (!pattern.test(str)) {
                            var msgModel = { MsgType: "warning",msg: "请正确输入银行卡号！",result: false,msgTitle: "系统提示" };
                            BPM.ShowMsg(msgModel);
                            $("#CardCode").focus();
                            BPM.unblockUI($("#blockAddDiv")); //解除锁定
                            return false;
                        }

银行卡首位非0，位数也不同