I've got an assignment to do pure JS validation as well as submit with AJAX. Here is the code I've got so far. I'm wondering if I can do away with the whole "reason" bit. That was because it was originally meant to display a list of all the errors, but I've tweaked the code to instead display the errors right by the field.
Basically I want to call up the validateFormOnSubmit and just have it go through all the if statements instead of all the separate functions, then if it all passes execute submitFormAjax.
The AJAX is currently not working but don't want to troubleshoot that until I've cleaned up the JS code.
HTML
<form id="contact" name="contact" onsubmit="return validateFormOnSubmit(this)" action="" method="GET">
<div>
<label>First Name</label>
<input placeholder="First Name" type="text" name="name" id="name" tabindex="1" autofocus />
<div id="name-error" class="error"></div>
</div>
<div>
<label>Nickname</label>
<input placeholder="Nickname" type="text" name="nickname" id="nickname" tabindex="2" autofocus />
</div>
<div>
<label>Email</label>
<input placeholder="Email" type="email" name="email" id="email" tabindex="3" autofocus />
<div id="email-error" class="error"></div>
</div>
<div>
<label>Phone</label>
<input placeholder="Phone" type="tel" name="phone" id="phone" tabindex="4" autofocus />
<div id="phone-error" class="error"></div>
</div>
<div>
<label>I prefer</label>
<input type="radio" name="pet" id="Dogs" tabindex="5" autofocus />Dogs
<input type="radio" name="pet" id="Cats" tabindex="6" autofocus />Cats
<input type="radio" name="pet" id="Neither" tabindex="7" autofocus />Neither
<div id="pet-error" class="error"></div>
</div>
<div>
<label>My favorite number between 1 and 50</label>
<input placeholder="Favorite number between 1 and 50" type="text" name="number" id="number" tabindex="8" autofocus />
<div id="number-error" class="error"></div>
</div>
<div>
<label>Disclaimer</label>
<input type="checkbox" name="disclaimer" id="disclaimer" tabindex="9" autofocus />I confirm that all the above information is true.
<div id="disclaimer-error" class="error"></div>
</div>
<div>
<button type="submit" name="submit" id="submit" tabindex="10">Send</button>
</div>
</form>
JS
function validateFormOnSubmit(contact) {
reason = "";
reason += validateName(contact.name);
reason += validateEmail(contact.email);
reason += validatePhone(contact.phone);
reason += validatePet(contact.pet);
reason += validateNumber(contact.number);
reason += validateDisclaimer(contact.disclaimer);
console.log(reason);
if (reason.length > 0) {
return false;
} else {
// Show some loading image and submit form
submitFormAjax();
}
}
// validate required fields
function validateName(name) {
var error = "";
if (name.value.length == 0) {
name.style.background = 'Red';
document.getElementById('name-error').innerHTML = "The required field has not been filled in";
var error = "1";
} else {
name.style.background = 'White';
document.getElementById('name-error').innerHTML = '';
}
return error;
}
// validate email as required field and format
function trim(s) {
return s.replace(/^\s+|\s+$/, '');
}
function validateEmail(email) {
var error = "";
var temail = trim(email.value); // value of field with whitespace trimmed off
var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/;
var illegalChars = /[\(\)\<\>\,\;\:\\\"\[\]]/;
if (email.value == "") {
email.style.background = 'Red';
document.getElementById('email-error').innerHTML = "Please enter an email address.";
var error = "2";
} else if (!emailFilter.test(temail)) { //test email for illegal characters
email.style.background = 'Red';
document.getElementById('email-error').innerHTML = "Please enter a valid email address.";
var error = "3";
} else if (email.value.match(illegalChars)) {
email.style.background = 'Red';
var error = "4";
document.getElementById('email-error').innerHTML = "Email contains invalid characters.";
} else {
email.style.background = 'White';
document.getElementById('email-error').innerHTML = '';
}
return error;
}
// validate phone for required and format
function validatePhone(phone) {
var error = "";
var stripped = phone.value.replace(/[\(\)\.\-\ ]/g, '');
if (phone.value == "") {
document.getElementById('phone-error').innerHTML = "Please enter a phone number";
phone.style.background = 'Red';
var error = '6';
} else if (isNaN(parseInt(stripped))) {
var error = "5";
document.getElementById('phone-error').innerHTML = "The phone number contains illegal characters.";
phone.style.background = 'Red';
} else if (stripped.length < 10) {
var error = "6";
document.getElementById('phone-error').innerHTML = "The phone number is too short.";
phone.style.background = 'Red';
} else {
phone.style.background = 'White';
document.getElementById('phone-error').innerHTML = '';
}
return error;
}
function validatePet(pet) {
if ((contact.pet[0].checked == false) && (contact.pet[1].checked == false) && (contact.pet[2].checked == false)) {
document.getElementById('pet-error').innerHTML = "Pet required";
var error = "2";
} else {
document.getElementById('pet-error').innerHTML = '';
}
return error;
}
function validateNumber(number) {
var num = document.forms["contact"]["number"];
var y = num.value;
if (!isNaN(y)) {
//alert('va');
if (y < 0 || y > 50) {
//Wrong
number.style.background = 'Red';
document.getElementById("number-error").innerHTML = "Must be between 0 and 50.";
var error = "10";
} else {
//Correct
number.style.background = 'White';
document.getElementById("number-error").innerHTML = "";
}
return error;
} else {
document.getElementById("number-error").innerHTML = "Must be a number.";
var error = "3";
}
return error;
}
function validateDisclaimer(disclaimer) {
var error = "";
if (document.getElementById("disclaimer").checked === false) {
document.getElementById('disclaimer-error').innerHTML = "Required";
var error = "4";
} else {
document.getElementById('disclaimer-error').innerHTML = '';
}
return error;
}
function submitFormAjax() {
var xmlhttp= window.XMLHttpRequest ?
new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
alert("Test Ready State"); // Here is the response
}
var name = document.getElementById('name').innerHTML;
var nickname = document.getElementById('nickname').innerHTML;
var email = document.getElementById('email').innerHTML;
var phone = document.getElementById('phone').innerHTML;
var pet = document.getElementById('pet').innerHTML;
var number = document.getElementById('number').innerHTML;
var disclaimer = document.getElementById('disclaimer').innerHTML;
xmlhttp.open("GET","form.php?name=" + name + "&nickname" + nickname + "&email=" + email, + "&phone" + phone + "&pet" + pet + "&number" + number + "&disclaimer" + disclaimer, true);
xmlhttp.send();
}
PHP
<?php
$name = $_GET['name'];
$nickname = $_GET['nickname'];
$email = $_GET['email'];
$phone = $_GET['phone'];
$pet = $_GET['pet'];
$number = $_GET['number'];
$disclaimer = $_GET['disclaimer'];
$from = 'From: Test From';
$to = 'euteneier@gmail.com';
$subject = 'Hello';
$message = "This is a message.";
if ($_GET['submit']) {
if (mail ($to, $subject, $message)) {
echo '<p>Your message has been sent!</p>';
} else {
echo '<p>Something went wrong, go back and try again!</p>';
}
}
?>
