使用jquery.validate.js和jquery.form.js检查条件

在我的表格中有很多领域，包括国家，州

国家/地区下拉列表列出的所有国家/地区，当我选择美国时，它将在国家/地区下拉列表中显示其国家/地区（此处

stateid

是国家/地区下拉列表的id）

如果我选择其他国家，则会显示一个用于输入状态的文本框，下拉列表将不显示（此处

statename

是状态文本框的id）

我还使用jquery.validate.js和jquery.form.js将验证放在这个页面中

$(document).ready(function ()
{
    $('#errorbox').hide();

    validator = $("#custom-form-validate").validate({
        errorContainer: "#errorbox",
        errorLabelContainer: "#errorbox ul",
        wrapper: "li",
        rules: {
            firstname: "required",
            lastname: "required",
            email: {
                required: true,
                email: true
            },
            credentialdegree: "required",
            address: "required",
            confirmemail: {
                required: true,
                equalTo: '#email'
            },
            telephone: {
            required: true,
            },
            city: "required",

            postcode: {
                required: true,
                digits: true
            },
            country_id: { valueNotEquals: "" },
            },
            messages: {
                credentialdegree: "Degree Field is Required.",
                email: {
                    required: "Please enter the Email ID.",
                    email: "Please enter a valid Email ID."
                },
                firstname: {
                    required: "Please enter the First Name."
                },
                lastname: {
                    required: "Please enter the Last Name."
                },
                address: {
                    required: "Please enter the Address."
                },
                confirmemail: {
                    required: "Please enter Confirm Email address.",
                    confirmemail: "Please enter a valid Confirm email address."
                },
                telephone: {
                    required: 'Please enter Phone Number.'
                },
                city: { required: "Please enter City" },
                postcode: {
                    required: 'Please enter the Postal Code.',
                    digits: 'Postal Code(Please Enter Numbers Only.)'
                },
                country_id: {
                    valueNotEquals: "Please select the Country. "
                }
            },
            invalidHandler: function (form, validator)
            {
                $("#errorbox").show();
            }
        });
    });

    $.validator.addMethod("valueNotEquals", function (value, element, arg)
    {
        return arg != value;
    }, "Value must not equal arg.");

以上是我的验证代码

我想检查stateid（如果国家是

US

并且显示

stateid

下拉列表）是否为必填字段。 并且要检查statename（如果国家/地区不是

US

并且显示

statename

文本框）是必填字段

我该怎么做

编辑： 这是html：

<form enctype="multipart/form-data" id="custom-form-validate" method="POST" action="index.php">
        <ul class="form-list">
            <li>
                <label>First Name:<span>*</span></label>
                <input type="text" class="input-text" title="UserFirstname" value="" id="firstname" name="firstname">
            </li>
            <li>
                <label>Last name:<span>*</span></label>
                <input type="text" class="input-text" title="UserLastname" value="" id="lastname" name="lastname">
            </li>
            <li>
                <label>Credential/Degree (If applicable):<span>*</span></label>
                <input type="text" class="required-entry" title="Credential" value="" id="credentialdegree" name="credentialdegree">
            </li>
            <li>
                <label for="name">Company name:</label>
                <input type="text" class="input-text" title="Company" value="" id="company" name="company">
            </li>
             <li>
                <label class="required" for="name">Address:<span>*</span></label>
                <textarea id="address" name="address"></textarea>
            </li>
            <li>
                <label>Phone:<span>*</span></label>
                 <input type="text" class="input-text" title="Telephone" value="" id="telephone" name="telephone">
                <div class="clear"></div>
            </li>
            <li>
                <label>City:<span>*</span></label>
                <input type="text" class="input-text" title="City" value="" id="city" name="city">
           </li>  


<li>
<label>Country:<span>*</span></label>
<select name="country_id" id="country" class="validate-select" title="Country"><option value=""> </option><option value="AF">Afghanistan</option><option value="AL">Albania</option><option value="DZ">Algeria</option><option value="AS">American Samoa</option><option value="AD">Andorra</option><option value="AO">Angola</option><option value="AI">Anguilla</option><option value="AQ">Antarctica</option><option value="AG">Antigua and Barbuda</option><option value="AR">Argentina</option><option value="AM">Armenia</option><option value="AW">Aruba</option><option value="AU">Australia</option><option value="AT">Austria</option><option value="AZ">Azerbaijan</option><option value="BS">Bahamas</option><option value="BH">Bahrain</option><option value="BD">Bangladesh</option><option value="BB">Barbados</option><option value="BY">Belarus</option><option value="BE">Belgium</option><option value="BZ">Belize</option><option value="BJ">Benin</option><option value="BM">Bermuda</option><option value="BT">Bhutan</option><option value="BO">Bolivia</option><option value="BA">Bosnia and Herzegovina</option><option value="BW">Botswana</option><option value="BV">Bouvet Island</option><option value="BR">Brazil</option><option value="IO">British Indian Ocean Territory</option><option value="VG">British Virgin Islands</option><option value="BN">Brunei</option><option value="BG">Bulgaria</option><option value="BF">Burkina Faso</option><option value="BI">Burundi</option><option value="KH">Cambodia</option><option value="CM">Cameroon</option><option value="CA">Canada</option><option value="CV">Cape Verde</option><option value="KY">Cayman Islands</option><option value="CF">Central African Republic</option><option value="TD">Chad</option><option value="CL">Chile</option><option value="CN">China</option><option value="CX">Christmas Island</option><option value="CC">Cocos [Keeling] Islands</option><option value="CO">Colombia</option><option value="KM">Comoros</option><option value="CG">Congo - Brazzaville</option><option value="CD">Congo - Kinshasa</option><option value="CK">Cook Islands</option><option value="CR">Costa Rica</option><option value="HR">Croatia</option><option value="CU">Cuba</option><option value="CY">Cyprus</option><option value="CZ">Czech Republic</option><option value="CI">Côte d’Ivoire</option><option value="DK">Denmark</option><option value="DJ">Djibouti</option><option value="DM">Dominica</option><option value="DO">Dominican Republic</option><option value="EC">Ecuador</option><option value="EG">Egypt</option><option value="SV">El Salvador</option><option value="GQ">Equatorial Guinea</option><option value="ER">Eritrea</option><option value="EE">Estonia</option><option value="ET">Ethiopia</option><option value="FK">Falkland Islands</option><option value="FO">Faroe Islands</option><option value="FJ">Fiji</option><option value="FI">Finland</option><option value="FR">France</option><option value="GF">French Guiana</option><option value="PF">French Polynesia</option><option value="TF">French Southern Territories</option><option value="GA">Gabon</option><option value="GM">Gambia</option><option value="GE">Georgia</option><option value="DE">Germany</option><option value="GH">Ghana</option><option value="GI">Gibraltar</option><option value="GR">Greece</option><option value="GL">Greenland</option><option value="GD">Grenada</option><option value="GP">Guadeloupe</option><option value="GU">Guam</option><option value="GT">Guatemala</option><option value="GG">Guernsey</option><option value="GN">Guinea</option><option value="GW">Guinea-Bissau</option><option value="GY">Guyana</option><option value="HT">Haiti</option><option value="HM">Heard Island and McDonald Islands</option><option value="HN">Honduras</option><option value="HK">Hong Kong SAR China</option><option value="HU">Hungary</option><option value="IS">Iceland</option><option value="IN">India</option><option value="ID">Indonesia</option><option value="IR">Iran</option><option value="IQ">Iraq</option><option value="IE">Ireland</option><option value="IM">Isle of Man</option><option value="IL">Israel</option><option value="IT">Italy</option><option value="JM">Jamaica</option><option value="JP">Japan</option><option value="JE">Jersey</option><option value="JO">Jordan</option><option value="KZ">Kazakhstan</option><option value="KE">Kenya</option><option value="KI">Kiribati</option><option value="KW">Kuwait</option><option value="KG">Kyrgyzstan</option><option value="LA">Laos</option><option value="LV">Latvia</option><option value="LB">Lebanon</option><option value="LS">Lesotho</option><option value="LR">Liberia</option><option value="LY">Libya</option><option value="LI">Liechtenstein</option><option value="LT">Lithuania</option><option value="LU">Luxembourg</option><option value="MO">Macau SAR China</option><option value="MK">Macedonia</option><option value="MG">Madagascar</option><option value="MW">Malawi</option><option value="MY">Malaysia</option><option value="MV">Maldives</option><option value="ML">Mali</option><option value="MT">Malta</option><option value="MH">Marshall Islands</option><option value="MQ">Martinique</option><option value="MR">Mauritania</option><option value="MU">Mauritius</option><option value="YT">Mayotte</option><option value="MX">Mexico</option><option value="FM">Micronesia</option><option value="MD">Moldova</option><option value="MC">Monaco</option><option value="MN">Mongolia</option><option value="ME">Montenegro</option><option value="MS">Montserrat</option><option value="MA">Morocco</option><option value="MZ">Mozambique</option><option value="MM">Myanmar [Burma]</option><option value="NA">Namibia</option><option value="NR">Nauru</option><option value="NP">Nepal</option><option value="NL">Netherlands</option><option value="AN">Netherlands Antilles</option><option value="NC">New Caledonia</option><option value="NZ">New Zealand</option><option value="NI">Nicaragua</option><option value="NE">Niger</option><option value="NG">Nigeria</option><option value="NU">Niue</option><option value="NF">Norfolk Island</option><option value="KP">North Korea</option><option value="MP">Northern Mariana Islands</option><option value="NO">Norway</option><option value="OM">Oman</option><option value="PK">Pakistan</option><option value="PW">Palau</option><option value="PS">Palestinian Territories</option><option value="PA">Panama</option><option value="PG">Papua New Guinea</option><option value="PY">Paraguay</option><option value="PE">Peru</option><option value="PH">Philippines</option><option value="PN">Pitcairn Islands</option><option value="PL">Poland</option><option value="PT">Portugal</option><option value="PR">Puerto Rico</option><option value="QA">Qatar</option><option value="RO">Romania</option><option value="RU">Russia</option><option value="RW">Rwanda</option><option value="RE">Réunion</option><option value="BL">Saint Barthélemy</option><option value="SH">Saint Helena</option><option value="KN">Saint Kitts and Nevis</option><option value="LC">Saint Lucia</option><option value="MF">Saint Martin</option><option value="PM">Saint Pierre and Miquelon</option><option value="VC">Saint Vincent and the Grenadines</option><option value="WS">Samoa</option><option value="SM">San Marino</option><option value="SA">Saudi Arabia</option><option value="SN">Senegal</option><option value="RS">Serbia</option><option value="SC">Seychelles</option><option value="SL">Sierra Leone</option><option value="SG">Singapore</option><option value="SK">Slovakia</option><option value="SI">Slovenia</option><option value="SB">Solomon Islands</option><option value="SO">Somalia</option><option value="ZA">South Africa</option><option value="GS">South Georgia and the South Sandwich Islands</option><option value="KR">South Korea</option><option value="ES">Spain</option><option value="LK">Sri Lanka</option><option value="SD">Sudan</option><option value="SR">Suriname</option><option value="SJ">Svalbard and Jan Mayen</option><option value="SZ">Swaziland</option><option value="SE">Sweden</option><option value="CH">Switzerland</option><option value="SY">Syria</option><option value="ST">São Tomé and Príncipe</option><option value="TW">Taiwan</option><option value="TJ">Tajikistan</option><option value="TZ">Tanzania</option><option value="TH">Thailand</option><option value="TL">Timor-Leste</option><option value="TG">Togo</option><option value="TK">Tokelau</option><option value="TO">Tonga</option><option value="TT">Trinidad and Tobago</option><option value="TN">Tunisia</option><option value="TR">Turkey</option><option value="TM">Turkmenistan</option><option value="TC">Turks and Caicos Islands</option><option value="TV">Tuvalu</option><option value="UM">U.S. Minor Outlying Islands</option><option value="VI">U.S. Virgin Islands</option><option value="UG">Uganda</option><option value="UA">Ukraine</option><option value="AE">United Arab Emirates</option><option value="GB">United Kingdom</option><option value="US" selected="selected">United States</option><option value="UY">Uruguay</option><option value="UZ">Uzbekistan</option><option value="VU">Vanuatu</option><option value="VA">Vatican City</option><option value="VE">Venezuela</option><option value="VN">Vietnam</option><option value="WF">Wallis and Futuna</option><option value="EH">Western Sahara</option><option value="YE">Yemen</option><option value="ZM">Zambia</option><option value="ZW">Zimbabwe</option><option value="AX">Åland Islands</option></select>
</li>

<li> 
<label>State:<span>*</span></label>
<select class="required-entry validate-select" defaultvalue="US" id="region_id" name="region_id" title="State/Province" style="">
<option value="">Please select region, state or province</option>
<option title="Alabama" value="1">Alabama</option><option title="Alaska" value="2">Alaska</option><option title="American Samoa" value="3">American Samoa</option></select>
 <input type="text" style="display:none;" class="input-text" title="State" value="" name="region" id="region">
<div class="divAjaxLoaderRed"></div>
<div class="clear"></div></li>

             <li>
                 <label>Postal Code:<span>*</span></label>
                 <input type="text" class="input-text" title="Zip/Postal Code" value="" id="postcode" name="postcode">
                 <div class="clear"></div>
             </li>    
              <li>
                 <label>Email:<span>*</span></label>
                 <input type="text" class="input-text" title="Email" value="" id="email" name="email">
            </li>
            <li>
                 <label class="required" for="email">Confirm Email:<span>*</span></label>
                 <input type="text" class="input-text" title="Confirmemail" value="" id="confirmemail" name="confirmemail">
            </li>            
            </ul>
             <div class="clear"></div>
            <br clear="all">
            <ul style="margin-top:5px">
            <li>
            <label>Please enter any additional information or questions here:</label>
            <div>
              <textarea title="Additional Information" value="" id="additionalinfo" name="additionalinfo"></textarea>
            </div>
            </li>
            <li>
                <p class="margin-top-3 margin-bottom-2 defult">
                To help us prevent automated scripts from sending this form, please type the 2 words below.
To generate new words, simply click the blue 'recycle' button on the right.
                </p>
            </li>
            </ul>

            <div class="submit_div">
            <input type="hidden" name="password" value="123456" title="Password" class="input-text " id="password" readonly="readonly">
            <input type="hidden" name="confirmation" value="123456" title="Confirmation" class="input-text " id="confirmation" readonly="readonly">
            <input type="hidden" name="usertype" value="0" title="usertype" class="input-text " id="usertype" readonly="readonly">
            <input type="hidden" name="group_id" value="5" title="group_id" class="input-text " id="group_id" readonly="readonly">
            <input type="submit" id="send" value="Submit" class="submit margin-top-2">
            </div>
        </form>

 <script type="text/javascript">
 $(document).ready(function() {
     $("#country option[value='US']").attr("selected", "selected");

     $("#country").change(function (){
            if($(this).val() != "US"){
                    $("#region_id").hide();
                    $("#region").show();
                    $("#region_id").val("");
            } else {
                    $("#region").hide();
                    $("#region_id").show();
                    $("#region").val("");
            }
     });
 });

 </script>

名字：*


姓氏：*


证书/学位（如适用）：*


公司名称：


地址:*


电话：*


城市：*


国家：*
阿富汗人巴尼亚尔加利亚美属萨摩亚安提瓜和巴布达安提瓜和巴布达根蒂亚亚美尼亚阿塞拜疆巴哈马巴林孟加拉国巴巴多斯白俄罗斯群岛贝里兹别尼群岛百慕大群岛玻利瓦尔博斯尼亚和黑塞哥维特群岛博茨瓦纳布瓦特岛巴西英属印度洋领土英属维尔京群岛布加勒比海非洲南部共和国查德基纳克里斯塔马斯岛[基林]斯考隆比亚科摩罗-刚果-布拉柴维尔-金沙萨科克群岛斯考斯塔-哥斯达黎加-克罗地亚-普鲁士-多米尼加共和国瑞士-萨尔瓦多-赤道几内亚厄立特里亚埃塞俄比亚-福克兰群岛斯法罗群岛斯菲芬兰-法兰西-圭亚那-法兰西波利尼西亚-法国南部中国香港特别行政区比索圭亚那海蒂赫德岛和麦当劳岛的领土包括格林兰、格林纳达和马拉根西吉群岛，以及中国匈牙利和印度中国澳门特别行政区澳门特别行政区马来西亚马来多尼亚马来亚群岛毛里塔尼亚群岛毛里塔尼亚马来亚市长墨西哥殖民地蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚蒙哥马利亚[缅甸]纳米比亚、乌拉圭、尼泊尔、荷兰、安的列斯岛、新喀里多尼亚、新西兰、尼加拉瓜、尼日利亚、诺福克岛、北朝鲜、马里亚纳群岛、斯诺韦、基斯坦帕劳、巴勒斯提尼亚领土、新几尼亚、巴拉圭、菲律宾、斯皮凯恩岛、波兰、葡萄牙、利奥卡塔罗狂躁症、俄罗斯、卢旺达联合会、圣巴特·莱梅桑、圣基特圣皮埃尔和米开朗圣文森特和格林纳丁圣皮埃尔和米开朗圣文森特和格林纳丁圣马力诺萨迪阿拉伯国家比亚谢勒塞拉利昂新加坡斯洛伐克洛夫尼亚所罗门群岛南部非洲南部乔治亚和南桑威奇群岛南部朝鲜半岛斯里兰卡苏里南梅斯瓦尔巴德和扬马恩斯瓦齐兰瑞士ão Toméand Príncipatewataiwantajikistantantantanzania泰国帝汶Lestetokokelautongatrinidad and Tobagotinia Turkmenistan Turks and Caicos Islands Stuvalu.美国小亚细亚边远岛屿Su.S.Virgin Island Suganda Ukraineunited Arab Emiliates美国苏鲁圭亚州Anuatuvatatic City Zenezuvietnamwallis和Futuna Saharayme西部nZambiaZimbabweÅland群岛


声明：*
请选择地区、州或省
阿拉巴马美属萨摩亚


邮政编码：*


电邮：*


确认电子邮件：*






请在此处输入任何其他信息或问题：



为了帮助我们防止自动脚本发送此表单，请键入以下两个单词。
要生成新词，只需单击右侧的蓝色“回收”按钮。



$（文档）.ready（函数（）{
$（“#国家/地区选项[value='US']”）attr（“选定”、“选定”）；
$（“#国家”）。更改（功能（）{
如果（$（this.val（）！=“US”）{
$（“#区域_id”）.hide（）；
$（“#地区”）.show（）；
$（“#地区id”）.val（“”）；
}否则{
$（“#区域”）.hide（）；
$（“地区id”）.show（）；
$（“#地区”）.val（“”）；
}
});
});

如果没有看到表单的HTML，就无法回答您的问题。如果您已经为州名称输入了文本，我不知道

stateid

应该是什么。请更仔细地澄清这一点，并构造一个JSFIDLE演示。@Sparky请看我在那里编辑的HTML代码