javascript - 使用 jquery-ajax 将表单输入发送到服务器

Question

我在将表单数据输入发送到服务器时遇到问题。我尝试过提醒每个表单输入，它给了我空提醒，这是我的代码:从我的代码来看，它一直提醒 0。当我正常发布时，它可以工作。

<script type="text/javascript">
$(function(){

     //dataString = $('#form_user').serialize();
     var details = new FormData(document.getElementById('form_user'));
     $('#form_user').submit(function(){
        $.ajax({
            url:"<?= base_url('form/insertUser'); ?>",
            type:"POST",
            data: details,
            processData: false,
            contentType: false,
            success: function(data){
                var result = $.parseJSON(data); 
                alert(result.id);
            },
            error: function(error,status,strErr){
                alert(strErr);
            }

        }); 
        return false;

    });

 });

</script>

我的 HTML:

<div id="user" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
        <h4 id="myModalLabel">Add User</h4>
    </div>
    <div class="modal-body">
        <p>
            <div class ="error">

            </div>
            <form class="form-inline" name="form_user" id="form_user" >
                <div class="row">

                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-user"></i></span>
                        <input class="span4" type="text" name="fname" placeholder="Firstname">
                    </div>
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-user"></i></span>
                        <input class="span4" type="text" name="sname" placeholder="Surname">
                    </div>
                </div>
                <div class="row">

                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-envelope"></i></span>
                        <input class="span4" type="text" placeholder="Email address" name="email">
                    </div>
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-th-list"></i></span>
                        <select name="gender" class="span4" data-placeholder="Gender" >
                            <option value="">Gender</option>
                            <option value="Male">Male</option>
                            <option value="Female">Female</option>
                        </select>
                    </div>
                </div>
                <div class="row">
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-th-list"></i></span>
                        <select name="group" class="span4" data-placeholder="Group" >
                            <option value="">Group</option>
                            <option value="1">Member</option>
                            <option value="2">Admin</option>
                        </select>
                    </div>

                </div>

                <div class="row">  
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-th-list"></i></span>

                        <select class="chosen span4" name="country" >
                            <option value="" >Choose a Country...</option>
                            <option value="United States">United States</option>
                            <option value="United Kingdom">United Kingdom</option>
                            <option value="Afghanistan">Afghanistan</option>
                            <option value="Albania">Albania</option>
                            <option value="Algeria">Algeria</option>
                            <option value="American Samoa">American Samoa</option>
                            <option value="Andorra">Andorra</option>
                            <option value="Angola">Angola</option>
                            <option value="Anguilla">Anguilla</option>
                            <option value="Antarctica">Antarctica</option>
                            <option value="Antigua and Barbuda">Antigua and Barbuda</option>
                            <option value="Argentina">Argentina</option>
                            <option value="Armenia">Armenia</option>
                            <option value="Aruba">Aruba</option>
                            <option value="Australia">Australia</option>
                            <option value="Austria">Austria</option>
                            <option value="Azerbaijan">Azerbaijan</option>
                            <option value="Bahamas">Bahamas</option>
                            <option value="Bahrain">Bahrain</option>
                            <option value="Bangladesh">Bangladesh</option>
                            <option value="Barbados">Barbados</option>
                            <option value="Belarus">Belarus</option>
                            <option value="Belgium">Belgium</option>
                            <option value="Belize">Belize</option>
                            <option value="Benin">Benin</option>
                            <option value="Bermuda">Bermuda</option>
                            <option value="Bhutan">Bhutan</option>
                            <option value="Bolivia">Bolivia</option>
                            <option value="Bosnia and Herzegovina">Bosnia and Herzegovina</option>
                            <option value="Botswana">Botswana</option>
                            <option value="Bouvet Island">Bouvet Island</option>
                            <option value="Brazil">Brazil</option>
                            <option value="British Indian Ocean Territory">British Indian Ocean Territory</option>
                            <option value="Brunei Darussalam">Brunei Darussalam</option>
                            <option value="Bulgaria">Bulgaria</option>
                            <option value="Burkina Faso">Burkina Faso</option>
                            <option value="Burundi">Burundi</option>
                            <option value="Cambodia">Cambodia</option>
                            <option value="Cameroon">Cameroon</option>
                            <option value="Canada">Canada</option>
                            <option value="Cape Verde">Cape Verde</option>
                            <option value="Cayman Islands">Cayman Islands</option>
                            <option value="Central African Republic">Central African Republic</option>
                            <option value="Chad">Chad</option>
                            <option value="Chile">Chile</option>
                            <option value="China">China</option>
                            <option value="Christmas Island">Christmas Island</option>
                            <option value="Cocos (Keeling) Islands">Cocos (Keeling) Islands</option>
                            <option value="Colombia">Colombia</option>
                            <option value="Comoros">Comoros</option>
                            <option value="Congo">Congo</option>
                            <option value="Congo, The Democratic Republic of The">Congo, The Democratic Republic of The</option>
                            <option value="Cook Islands">Cook Islands</option>
                            <option value="Costa Rica">Costa Rica</option>
                            <option value="Cote D'ivoire">Cote D'ivoire</option>
                            <option value="Croatia">Croatia</option>
                            <option value="Cuba">Cuba</option>
                            <option value="Cyprus">Cyprus</option>
                            <option value="Czech Republic">Czech Republic</option>
                            <option value="Denmark">Denmark</option>
                            <option value="Djibouti">Djibouti</option>
                            <option value="Dominica">Dominica</option>
                            <option value="Dominican Republic">Dominican Republic</option>
                            <option value="Ecuador">Ecuador</option>
                            <option value="Egypt">Egypt</option>
                            <option value="El Salvador">El Salvador</option>
                            <option value="Equatorial Guinea">Equatorial Guinea</option>
                            <option value="Eritrea">Eritrea</option>
                            <option value="Estonia">Estonia</option>
                            <option value="Ethiopia">Ethiopia</option>
                            <option value="Falkland Islands (Malvinas)">Falkland Islands (Malvinas)</option>
                            <option value="Faroe Islands">Faroe Islands</option>
                            <option value="Fiji">Fiji</option>
                            <option value="Finland">Finland</option>
                            <option value="France">France</option>
                            <option value="French Guiana">French Guiana</option>
                            <option value="French Polynesia">French Polynesia</option>
                            <option value="French Southern Territories">French Southern Territories</option>
                            <option value="Gabon">Gabon</option>
                            <option value="Gambia">Gambia</option>
                            <option value="Georgia">Georgia</option>
                            <option value="Germany">Germany</option>
                            <option value="Ghana">Ghana</option>
                            <option value="Gibraltar">Gibraltar</option>
                            <option value="Greece">Greece</option>
                            <option value="Greenland">Greenland</option>
                            <option value="Grenada">Grenada</option>
                            <option value="Guadeloupe">Guadeloupe</option>
                            <option value="Guam">Guam</option>
                            <option value="Guatemala">Guatemala</option>
                            <option value="Guinea">Guinea</option>
                            <option value="Guinea-bissau">Guinea-bissau</option>
                            <option value="Guyana">Guyana</option>
                            <option value="Haiti">Haiti</option>
                            <option value="Heard Island and Mcdonald Islands">Heard Island and Mcdonald Islands</option>
                            <option value="Holy See (Vatican City State)">Holy See (Vatican City State)</option>
                            <option value="Honduras">Honduras</option>
                            <option value="Hong Kong">Hong Kong</option>
                            <option value="Hungary">Hungary</option>
                            <option value="Iceland">Iceland</option>
                            <option value="India">India</option>
                            <option value="Indonesia">Indonesia</option>
                            <option value="Iran, Islamic Republic of">Iran, Islamic Republic of</option>
                            <option value="Iraq">Iraq</option>
                            <option value="Ireland">Ireland</option>
                            <option value="Israel">Israel</option>
                            <option value="Italy">Italy</option>
                            <option value="Jamaica">Jamaica</option>
                            <option value="Japan">Japan</option>
                            <option value="Jordan">Jordan</option>
                            <option value="Kazakhstan">Kazakhstan</option>
                            <option value="Kenya">Kenya</option>
                            <option value="Kiribati">Kiribati</option>
                            <option value="Korea, Democratic People's Republic of">Korea, Democratic People's Republic of</option>
                            <option value="Korea, Republic of">Korea, Republic of</option>
                            <option value="Kuwait">Kuwait</option>
                            <option value="Kyrgyzstan">Kyrgyzstan</option>
                            <option value="Lao People's Democratic Republic">Lao People's Democratic Republic</option>
                            <option value="Latvia">Latvia</option>
                            <option value="Lebanon">Lebanon</option>
                            <option value="Lesotho">Lesotho</option>
                            <option value="Liberia">Liberia</option>
                            <option value="Libyan Arab Jamahiriya">Libyan Arab Jamahiriya</option>
                            <option value="Liechtenstein">Liechtenstein</option>
                            <option value="Lithuania">Lithuania</option>
                            <option value="Luxembourg">Luxembourg</option>
                            <option value="Macao">Macao</option>
                            <option value="Macedonia, The Former Yugoslav Republic of">Macedonia, The Former Yugoslav Republic of</option>
                            <option value="Madagascar">Madagascar</option>
                            <option value="Malawi">Malawi</option>
                            <option value="Malaysia">Malaysia</option>
                            <option value="Maldives">Maldives</option>
                            <option value="Mali">Mali</option>
                            <option value="Malta">Malta</option>
                            <option value="Marshall Islands">Marshall Islands</option>
                            <option value="Martinique">Martinique</option>
                            <option value="Mauritania">Mauritania</option>
                            <option value="Mauritius">Mauritius</option>
                            <option value="Mayotte">Mayotte</option>
                            <option value="Mexico">Mexico</option>
                            <option value="Micronesia, Federated States of">Micronesia, Federated States of</option>
                            <option value="Moldova, Republic of">Moldova, Republic of</option>
                            <option value="Monaco">Monaco</option>
                            <option value="Mongolia">Mongolia</option>
                            <option value="Montenegro">Montenegro</option>
                            <option value="Montserrat">Montserrat</option>
                            <option value="Morocco">Morocco</option>
                            <option value="Mozambique">Mozambique</option>
                            <option value="Myanmar">Myanmar</option>
                            <option value="Namibia">Namibia</option>
                            <option value="Nauru">Nauru</option>
                            <option value="Nepal">Nepal</option>
                            <option value="Netherlands">Netherlands</option>
                            <option value="Netherlands Antilles">Netherlands Antilles</option>
                            <option value="New Caledonia">New Caledonia</option>
                            <option value="New Zealand">New Zealand</option>
                            <option value="Nicaragua">Nicaragua</option>
                            <option value="Niger">Niger</option>
                            <option value="Nigeria">Nigeria</option>
                            <option value="Niue">Niue</option>
                            <option value="Norfolk Island">Norfolk Island</option>
                            <option value="Northern Mariana Islands">Northern Mariana Islands</option>
                            <option value="Norway">Norway</option>
                            <option value="Oman">Oman</option>
                            <option value="Pakistan">Pakistan</option>
                            <option value="Palau">Palau</option>
                            <option value="Palestinian Territory, Occupied">Palestinian Territory, Occupied</option>
                            <option value="Panama">Panama</option>
                            <option value="Papua New Guinea">Papua New Guinea</option>
                            <option value="Paraguay">Paraguay</option>
                            <option value="Peru">Peru</option>
                            <option value="Philippines">Philippines</option>
                            <option value="Pitcairn">Pitcairn</option>
                            <option value="Poland">Poland</option>
                            <option value="Portugal">Portugal</option>
                            <option value="Puerto Rico">Puerto Rico</option>
                            <option value="Qatar">Qatar</option>
                            <option value="Reunion">Reunion</option>
                            <option value="Romania">Romania</option>
                            <option value="Russian Federation">Russian Federation</option>
                            <option value="Rwanda">Rwanda</option>
                            <option value="Saint Helena">Saint Helena</option>
                            <option value="Saint Kitts and Nevis">Saint Kitts and Nevis</option>
                            <option value="Saint Lucia">Saint Lucia</option>
                            <option value="Saint Pierre and Miquelon">Saint Pierre and Miquelon</option>
                            <option value="Saint Vincent and The Grenadines">Saint Vincent and The Grenadines</option>
                            <option value="Samoa">Samoa</option>
                            <option value="San Marino">San Marino</option>
                            <option value="Sao Tome and Principe">Sao Tome and Principe</option>
                            <option value="Saudi Arabia">Saudi Arabia</option>
                            <option value="Senegal">Senegal</option>
                            <option value="Serbia">Serbia</option>
                            <option value="Seychelles">Seychelles</option>
                            <option value="Sierra Leone">Sierra Leone</option>
                            <option value="Singapore">Singapore</option>
                            <option value="Slovakia">Slovakia</option>
                            <option value="Slovenia">Slovenia</option>
                            <option value="Solomon Islands">Solomon Islands</option>
                            <option value="Somalia">Somalia</option>
                            <option value="South Africa">South Africa</option>
                            <option value="South Georgia and The South Sandwich Islands">South Georgia and The South Sandwich Islands</option>
                            <option value="South Sudan">South Sudan</option>
                            <option value="Spain">Spain</option>
                            <option value="Sri Lanka">Sri Lanka</option>
                            <option value="Sudan">Sudan</option>
                            <option value="Suriname">Suriname</option>
                            <option value="Svalbard and Jan Mayen">Svalbard and Jan Mayen</option>
                            <option value="Swaziland">Swaziland</option>
                            <option value="Sweden">Sweden</option>
                            <option value="Switzerland">Switzerland</option>
                            <option value="Syrian Arab Republic">Syrian Arab Republic</option>
                            <option value="Taiwan, Republic of China">Taiwan, Republic of China</option>
                            <option value="Tajikistan">Tajikistan</option>
                            <option value="Tanzania, United Republic of">Tanzania, United Republic of</option>
                            <option value="Thailand">Thailand</option>
                            <option value="Timor-leste">Timor-leste</option>
                            <option value="Togo">Togo</option>
                            <option value="Tokelau">Tokelau</option>
                            <option value="Tonga">Tonga</option>
                            <option value="Trinidad and Tobago">Trinidad and Tobago</option>
                            <option value="Tunisia">Tunisia</option>
                            <option value="Turkey">Turkey</option>
                            <option value="Turkmenistan">Turkmenistan</option>
                            <option value="Turks and Caicos Islands">Turks and Caicos Islands</option>
                            <option value="Tuvalu">Tuvalu</option>
                            <option value="Uganda">Uganda</option>
                            <option value="Ukraine">Ukraine</option>
                            <option value="United Arab Emirates">United Arab Emirates</option>
                            <option value="United Kingdom">United Kingdom</option>
                            <option value="United States">United States</option>
                            <option value="United States Minor Outlying Islands">United States Minor Outlying Islands</option>
                            <option value="Uruguay">Uruguay</option>
                            <option value="Uzbekistan">Uzbekistan</option>
                            <option value="Vanuatu">Vanuatu</option>
                            <option value="Venezuela">Venezuela</option>
                            <option value="Viet Nam">Viet Nam</option>
                            <option value="Virgin Islands, British">Virgin Islands, British</option>
                            <option value="Virgin Islands, U.S.">Virgin Islands, U.S.</option>
                            <option value="Wallis and Futuna">Wallis and Futuna</option>
                            <option value="Western Sahara">Western Sahara</option>
                            <option value="Yemen">Yemen</option>
                            <option value="Zambia">Zambia</option>
                            <option value="Zimbabwe">Zimbabwe</option>
                        </select>

                    </div>
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-user"></i></span>
                        <input class="span4" type="number" name="phone" placeholder="Phone" >
                    </div>
                </div>

                <div class="row">
                    <div class="input-prepend span4 form-span">
                        <span class="add-on"><i class="icon-key"></i></span>
                        <input class="span4" type="password" name="password" placeholder="Password">
                    </div>
                    <div class="input-prepend span4 form-span">
                        <input type="submit" name="submit" value="Submit" class="btn btn-primary">
                    </div>
                </div>

            </form>

        </p>
    </div>
    <div class="modal-footer">
        <p></p>

    </div>
</div>

Controller :

public function insertUser(){
    $this->load->library('form_validation');
    $this->form_validation->set_rules('fname','Firstname','trim|required|xss_clean');
    $this->form_validation->set_rules('sname','Surname','trim|required|xss_clean');
    $this->form_validation->set_rules('gender','Gender','trim|required|xss_clean');
    $this->form_validation->set_rules('phone','Phone','trim|required|numeric|xss_clean');
    $this->form_validation->set_rules('email','Email','trim|required|xss_clean|valid_email|is_unique[users.email]');
    $this->form_validation->set_rules('password','Password','trim|required|xss_clean'); 
    $this->form_validation->set_rules('group','Group','trim|required|xss_clean');

    if($this->form_validation->run() == FALSE){
        $json = array('id'=>0,'msg'=>validation_errors('<p class="error">','</p>'));
        echo json_encode($json);

    }else{
        //insertion takes place here
        $this->load->model('admin_model');
        $fname = $this->input->post('fname');
        $sname = $this->input->post('sname');
        $gender = $this->input->post('gender');
        $phone = $this->input->post('phone');
        $password = $this->input->post('password');
        $username = $this->input->post('email');
        $country = $this->input->post('country');
        $group = $this->input->post('group');
        $data = array(

            'email'=>$username,
            'password'=>$password,
            'active'=>1,
            'fname'=>$fname,
            'lname'=>$sname,
            'phone'=>$phone,
            'phone'=>$phone,
            'country'=>$country,
            'gender'=>$gender,
            'group'=>$group

            );

        $table = 'users';
        $this->admin_model->insert($table,$data);
        $json = array('id'=>1,'msg'=>'User Successfully Created!!!');
        echo json_encode($json);
    }
}

Answer 1

由于您使用的是 jQuery，因此可以使用 .serialize() jQuery 方法。

var details = $('#form_user').serialize();

这将解决您的问题。

你可以使用

contentType: 'json'

然后您将不需要使用“parseJSON”。您的数据将作为 Javascript 对象被接收。