esui控件validatebox 通过正则判断输入 json传值

<td>
            @Html.TextBoxFor(m => m.ActualInvoiceFee, new
               {
                   @id = "txtActualInvoiceFee",
                   @style = "width:80px",
                   @class = "easyui-validatebox",
                   @validType = @"VerifyMoney[{'maxVal':999999 ,'minVal':-999999},'只能输入数字']",
                   @required = "true",
                   @missingMessage = "必须填写发票金额"
               })
</td>

//add by gongth验证金额
    $.extend($.fn.validatebox.defaults.rules, {
        VerifyMoney: {
            validator: function (value, param) {
                var reg = /^(|[+-]?(0|([1-9]\d*)|((0|([1-9]\d*))?\.\d{1,2})){1,1})$/;
                value = value.Trim();
                if (reg.test(value)) {
                    var maxVal = param[0]['maxVal'];
                    var minVal = param[0]['minVal'];
                    if (maxVal != null) {
                        if (reg.test(maxVal)) {
                            if (value > maxVal) {         
                                $.fn.validatebox.defaults.rules.VerifyMoney.message = "超出范围";
                                return false;
                            }
                        }
                    }
                    if (minVal != null) {
                        if (reg.test(minVal)) {
                            if (value < minVal) {           
                                $.fn.validatebox.defaults.rules.VerifyMoney.message = "超出范围";
                                return false;
                            }
                        }
                    }
                    return true;
                } else {
                    $.fn.validatebox.defaults.rules.VerifyMoney.message = param[1];
                    return false;
                }
            },
            message: ''
        }
    });
    //end ageReg