Ваш селектор имени класса не работает, используйте полное имя класса contact-form__label или вместо него можно использовать getElementsByName.Однако вы также импортируете свой сценарий до загрузки DOM, поэтому вам нужно будет переместить импорт сценария внизу тела.
Если по какой-либо причине вы не хотите перемещатьСценарий, вы можете обернуть ваш выбор формы в слушатель события будет выполнять, когда conetnt страницы готова, как это:
document.addEventListener("DOMContentLoaded", function(event) {
let form = document.getElementsByClassName('contact-form__label')[0];
form.addEventListener('submit', handleFormSubmit);
});
/**
* Retrieves input data from a form and returns it as a JSON object.
* @param {HTMLFormControlsCollection} elements the form elements
* @return {Object} form data as an object literal
*/
const formToJSON = elements => [].reduce.call(elements, (data, element) => {
data[element.name] = element.value;
return data;
}, {});
/**
* A handler function to prevent default submission and run our custom script.
* @param {Event} event the submit event triggered by the user
* @return {void}
*/
const handleFormSubmit = event => {
event.preventDefault();
const data = formToJSON(form.elements);
const dataContainer = document.getElementsByClassName('results__display')[0];
dataContainer.textContent = JSON.stringify(data, null, " ");
console.log(dataContainer);
};
/* We find the form element using its class name, then attach the
* `handleFormSubmit()` function to the
* `submit` event.
*/
let form = document.getElementsByClassName('contact-form__label')[0];
form.addEventListener('submit', handleFormSubmit);
.valid{
border:1px solid blue;
}
.invalid{
border:1px solid red;
}
.column {
float: left;
padding: 10px;
height: 300px; /* Should be removed. Only for demonstration */
}
.left{
width: 10%;
}
.right {
width: 30%;
}
.middle {
width: 60%;
min-width: 300px;
height: 100%;
}
.row:after {
content: "";
display: table;
clear: both;
}
#vapheading {
color: black;
font-family: Avenir;
}
#form{
color: white;
background-color: navy;
padding: 16px;
border-radius: 25px;
}
@media only screen and (max-width: 1026px) {
#left,#right {
display: none;
}
}
input {
border: 4px solid whitesmoke;
border-radius: 25px;
background-color: whitesmoke;
}
select {
border: 4px solid whitesmoke;
border-radius: 25px;
background-color: whitesmoke;
}
body{
background-color: lightgrey;
color: white;
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="vap_css.css"/>
<script>
function validateForm() {
var x = document.forms["myForm"]["ssn1"].value;
var y = document.forms["myForm"]["ssn2"].value;
if (x !== y ){
alert("Social Security number does not match");
return false;
}
}
</script>
</head>
<body>
<div class="row">
<div class="column left" id="left"></div>
<div class="column middle" id="middle">
<h2 id = "vapheading">Please fill out the Following Form</h2>
<div id = "form">
<form class="contact-form__label" name="myForm" onsubmit="return validateForm()">
<table id = "table">
<tr>
<td>First Name:* <br/><input type="text" name="firstname" id="fname" required/></td>
<td>Middle Name: <br/><input type="text" name="middlename" id="mname" /></td>
<td>Last Name:* <br/><input type="text" name="lastname" id="lname" required/></td>
</tr>
<tr>
<td>Suffix: <br/><input type="text" name="suffix" id="suffix" /></td>
</tr>
</table>
<table>
<tr>
<td>SSN:* <br/><input class="required-input" id="ssn1" maxlength="9" type="password" name="ssn1" required/></td>
<td>Verify SSN:* <br/><input class="required-input" id="ssn2" maxlength="9" type="password" name="ssn2" required/></td>
<td>Date of Birth:* <br/><input type="date" name="birthday" id="bday" required/></td>
</tr>
</table>
<table>
<tr>
<td>Place of Birth - City:* <br/><input type="text" name="city" id="city" required/></td>
<td>Place of Birth - State: <br/><input type="text" name="state" id="state" ></td>
<td>Place of Birth - Country:* <br/><select name="country" id="country" required>
<option value="">Choose Here</option>
<option value="Afghanistan">Afghanistan</option><option value="Albania">Albania</option><option value="Algeria">Algeria</option><option value="Andorra">Andorra</option>
<option value="Angola">Angola</option><option value="Antigua & Deps">Antigua & Deps</option><option value="Argentina">Argentina</option>
<option value="Armenia">Armenia</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="Bhutan">Bhutan</option><option value="Bolivia">Bolivia</option><option value="Bosnia Herzegovina">Bosnia Herzegovina</option>
<option value="Botswana">Botswana</option><option value="Brazil">Brazil</option><option value="Brunei">Brunei</option>
<option value="Bulgaria">Bulgaria</option><option value="Burkina">Burkina</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="Central African Rep">Central African Rep</option><option value="Chad">Chad</option>
<option value="Chile">Chile</option><option value="China">China</option><option value="Colombia">Colombia</option>
<option value="Comoros">Comoros</option><option value="Congo">Congo</option><option value="Congo {Democratic Rep}">Congo {Democratic Rep}</option>
<option value="Costa Rica">Costa Rica</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="East Timor">East Timor</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="Fiji">Fiji</option>
<option value="Finland">Finland</option><option value="France">France</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="Greece">Greece</option><option value="Grenada">Grenada</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="Honduras">Honduras</option>
<option value="Hungary">Hungary</option><option value="Iceland">Iceland</option><option value="India">India</option>
<option value="Indonesia">Indonesia</option><option value="Iran">Iran</option><option value="Iraq">Iraq</option>
<option value="Ireland {Republic}">Ireland {Republic}</option><option value="Israel">Israel</option><option value="Italy">Italy</option>
<option value="Ivory Coast">Ivory Coast</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 North">Korea North</option><option value="Korea South">Korea South</option>
<option value="Kosovo">Kosovo</option><option value="Kuwait">Kuwait</option><option value="Kyrgyzstan">Kyrgyzstan</option>
<option value="Laos">Laos</option><option value="Latvia">Latvia</option><option value="Lebanon">Lebanon</option>
<option value="Lesotho">Lesotho</option><option value="Liberia">Liberia</option><option value="Libya">Libya</option>
<option value="Liechtenstein">Liechtenstein</option><option value="Lithuania">Lithuania</option><option value="Luxembourg">Luxembourg</option>
<option value="Macedonia">Macedonia</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="Mauritania">Mauritania</option>
<option value="Mauritius">Mauritius</option><option value="Mexico">Mexico</option><option value="Micronesia">Micronesia</option>
<option value="Moldova">Moldova</option><option value="Monaco">Monaco</option><option value="Mongolia">Mongolia</option>
<option value="Montenegro">Montenegro</option><option value="Morocco">Morocco</option><option value="Mozambique">Mozambique</option>
<option value="Myanmar, {Burma}">Myanmar, {Burma}</option><option value="Namibia">Namibia</option><option value="Nauru">Nauru</option>
<option value="Nepal">Nepal</option><option value="Netherlands">Netherlands</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="Norway">Norway</option><option value="Oman">Oman</option><option value="Pakistan">Pakistan</option>
<option value="Palau">Palau</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="Poland">Poland</option><option value="Portugal">Portugal</option><option value="Qatar">Qatar</option>
<option value="Romania">Romania</option><option value="Russian Federation">Russian Federation</option><option value="Rwanda">Rwanda</option>
<option value="St Kitts & Nevis">St Kitts & Nevis</option><option value="St Lucia">St Lucia</option><option value="Saint Vincent & the Grenadines">Saint Vincent & the Grenadines</option>
<option value="Samoa">Samoa</option><option value="San Marino">San Marino</option><option value="Sao Tome & Principe">Sao Tome & 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 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="Swaziland">Swaziland</option><option value="Sweden">Sweden</option>
<option value="Switzerland">Switzerland</option><option value="Syria">Syria</option><option value="Taiwan">Taiwan</option>
<option value="Tajikistan">Tajikistan</option><option value="Tanzania">Tanzania</option><option value="Thailand">Thailand</option>
<option value="Togo">Togo</option><option value="Tonga">Tonga</option><option value="Trinidad & Tobago">Trinidad & Tobago</option>
<option value="Tunisia">Tunisia</option><option value="Turkey">Turkey</option><option value="Turkmenistan">Turkmenistan</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="Uruguay">Uruguay</option><option value="Uzbekistan">Uzbekistan</option><option value="Vanuatu">Vanuatu</option>
<option value="Vatican City">Vatican City</option><option value="Venezuela">Venezuela</option><option value="Vietnam">Vietnam</option>
<option value="Yemen">Yemen</option><option value="Zambia">Zambia</option><option value="Zimbabwe">Zimbabwe</option>
</select></td>
</tr>
<tr>
<td>Citizenship:* <br/><select name="citizenship" id="citixen" default required>
<option value="">Choose Here</option>
<option value="USCitizen">US Citizen</option>
<option value="greencard">Green Card</option>
<option value="H1B">H1B</option>
<option value="EAD">EAD</option>
<option value="Other">Other</option>
</select></td>
</tr>
</table>
<br/><br/><button type="submit">Submit</button>
</form>
</div>
</div>
<div class="column right" id="right"></div>
</div>
<script src="vap_script.js"></script>
</body>
</html>