关于动态验证之后，如何控制表单提交


  
            $.ajax({
                url: "validate.xml",
                dataType: "xml",
                type: 'get',
                error: function (xml) {
                    alert('Error loading XML document' + xml);
                },
                success: function (xml) {
                    $(xml).find("Data[Name='" + filename + "']").find("Item").each(function () {
                        var name = $(this).attr("Name");
                        var isNull = $(this).attr("IsNull");
                        var reg = $(this).attr("Reg");
                        var tip = $(this).attr("Tip");
                        readXMLStatus = true;
                        //给对应的元素添加focus事件以及blur事件
                        $("#" + name).focus(function () {
                            if (tip != "") {
                                $('#tipTable').css({ left: $.getLeft(this) + 'px', top: $.getTop(this) + 'px' });
                                $('.contenImage').html(tip);
                                $('#tipTable').fadeIn("fast");
                                //  settipTableOut(name);
                            }
                        }).blur(function () {                            //根据具体的逻辑判断当前 元素是否输入正确
                            //如果不允许为空
                            if (isNull == "true") {
                                //如果条件不允许为这且值为空
                                if ($("#" + name).val() == "") {                                    settipTableOut(name);
                                    isSubmit = false;
                                } else {
                                    //如果条件不允许为空且值也不为空
                                    if (reg != "") {
                                        //表示需要启动正则进行验证                                        var regex = new RegExp(reg);
                                        if (!regex.test($("#" + name).val())) {
                                            //错误提示
                                            settipTableOut(name);
                                            isSubmit = false;
                                        } else {
                                            //去除样式
                                            settipTableIn(name);
                                        }
                                    } else {
                                        settipTableIn(name);
                                    }
                                }                            } else {
                                //如果条件为空，且reg 不为空则表示要验证
                                if ($("#" + name).val() != "" && reg != "") {
                                    var regex = new RegExp(reg);
                                    if (!regex.test($("#" + name).val())) {
                                        //错误提示                                        settipTableOut(name);
                                        isSubmit = false;
                                    } else {
                                        settipTableIn(name);
                                    }
                                } else {
                                    settipTableIn(name);
                                }
                            }
                        });
                    });
                }
            });
说明下，上面这串代码功能也实现了，就是做的一个验证功能，根据xml所配置的 属性值来验证 表单， 这样单个触发blur 和focus 事件是没问题，关键是如果用户直接点击submit按钮这时候 ，就出现了一点问题，因为没条件触发focus和blur 只有单独文本框的时候 才满足条件，如何处理这个问题，求解答。