jquery验证添加规则

Question

我正在使用jquery中的验证插件。有一个很奇怪的事情是，当我这样添加规则时

$(document).ready(function () {
$.validator.addMethod("endDateGreaterThan", function (value, element, params) {
            if (value != "" && $(params).val() != "") {
                var endDate = formatValidateDate(value);
                var startDate = formatValidateDate($(params).val());
                if (startDate == null || endDate == null)
                    return true;
                return new Date(endDate) >= new Date(startDate);
            }
            return true;
        }, "");

var validator = $("#form").validate({
            rules: {
                StartDate: "required",
                EndDate: {
                    required: true,
                    endDateGreaterThan: "#StartDate"
                },                  
                DiscountRate: {
                    required: true,
                    max: 100,
                    min: 1
                }
            },
            messages: {
                StartDate: {
                    required: "ErrorMessageStartDateRequired"
                },
                EndDate: {
                    required: "ErrorMessageEndDateRequired",
                    endDateGreaterThan: "ErrorMessageEndDateGreaterThanStartDate"
                },
                DiscountRate: {
                    required: "ErrorMessageDiscountRateRequired",
                    max: "Global.ErrorMessageDiscountRateRange",
                    min: "Global.ErrorMessageDiscountRateRange"
                }
            }
      });

没有添加规则。如果我调试js文件并进入jquery.validation.js文件中的validate方法，我发现传递给validate方法的选项为空。

但是如果我动态添加规则，就像

$("#StartDate").rules("add", {
            required: true,
            messages: {
                required: "StartDate is required"
            }
        });

规则将按其应有的样子添加。

我正在使用 ASP.net mvc。

如有任何建议，我们将不胜感激。

Answer 1

您的 html 很可能是错误的。您在验证代码中引用的每个输入都必须具有 name 属性。所以这是错误的:

<input type="text" id="StartDate" />

这是正确的:

<input type="text" name="StartDate" id="StartDate" />

请参阅documentation :

The name attribute is '''required''' for input elements, the validation plugin doesn't work without it. Usually name and id attributes should have the same value.