我已经按照本教程学习如何使用PHP和jQuery创建联系表单。 据我所知，这个想法是让jquery工作，将php作为“备份”。
我没有遇到任何问题。或者我认为...... 但最终似乎jQuery无法正常工作。验证时我总是会“闪烁”（页面刷新）。
这是我试图在其中使用的页面： http://dccf.site88.net/test/dccf.php
这是PHP：
// Set email variables
$email_to = 'luis_bento@hotmail.com';
$email_subject = 'Message from DCCF site';
// Set required fields
$required_fields = array('fullname','email','comment');
// set error messages
$error_messages = array(
'fullname' => 'Please enter a Name to proceed.',
'email' => 'Please enter a valid Email.',
'comment' => 'Please enter a Message to continue.'
);
// Set form status
$form_complete = FALSE;
// configure validation array
$validation = array();
// check form submittal
if(!empty($_POST)) {
// Sanitise POST array
foreach($_POST as $key => $value) $_POST[$key] = remove_email_injection(trim($value));
// Loop into required fields and make sure they match our needs
foreach($required_fields as $field) {
// the field has been submitted?
if(!array_key_exists($field, $_POST)) array_push($validation, $field);
// check there is information in the field?
if($_POST[$field] == '') array_push($validation, $field);
// validate the email address supplied
if($field == 'email') if(!validate_email_address($_POST[$field])) array_push($validation, $field);
}
// basic validation result
if(count($validation) == 0) {
// Prepare our content string
$email_content = 'New Website Comment: ' . "\n\n";
// simple email content
foreach($_POST as $key => $value) {
if($key != 'submit') $email_content .= $key . ': ' . $value . "\n";
}
// if validation passed ok then send the email
mail($email_to, $email_subject, $email_content);
// Update form switch
$form_complete = TRUE;
}
}
function validate_email_address($email = FALSE) {
return (preg_match('/^[^@\s]+@([-a-z0-9]+\.)+[a-z]{2,}$/i', $email))? TRUE : FALSE;
}
function remove_email_injection($field = FALSE) {
return (str_ireplace(array("\r", "\n", "%0a", "%0d", "Content-Type:", "bcc:","to:","cc:"), '', $field));
}
?>
<div id="formWrap">
<h2>If you like our project, have any questions, or would like more information, please send us a message.</h2><!-- end of "Form Message" h2 -->
<div id="form">
<?php if($form_complete === FALSE): ?>
<form action="dccf.php" method="post" id="comments_form">
<div class="row">
<div class="label">Your Name:</div><!-- end of .label -->
<div class="input">
<input type="text" id="fullname" class="detail" name="fullname" value="<?php echo isset($_POST['fullname'])? $_POST['fullname'] : ''; ?>" /><?php if(in_array('fullname', $validation)): ?><span class="error"><?php echo $error_messages['fullname']; ?></span><?php endif; ?>
</div><!-- end of .input -->
<div class="context">e.g. John Smith or Jane Doe</div><!-- end of .context -->
</div><!-- end of .row -->
<div class="row">
<div class="label">Your Email:</div><!-- end of .label -->
<div class="input">
<input type="text" id="email" class="detail" name="email" value="<?php echo isset($_POST['email'])? $_POST['email'] : ''; ?>" /><?php if(in_array('email', $validation)): ?><span class="error"><?php echo $error_messages['email']; ?></span><?php endif; ?>
</div><!-- end of .input -->
<div class="context">e.g. youremail@somewhere.com</div><!-- end of .context -->
</div><!-- end of .row -->
<div class="row">
<div class="label">Your Message:</div><!-- end of .label -->
<div class="input">
<textarea id="comment" name="comment" class="mess"><?php echo isset($_POST['comment'])? $_POST['comment'] : ''; ?></textarea><?php if(in_array('comment', $validation)): ?><span class="error"><?php echo $error_messages['comment']; ?></span><?php endif; ?>
</div><!-- end of .input -->
</div><!-- end of .row -->
<div class="submit">
<input type="submit" id="submit" name="submit" value"Send Message" />
</div><!-- end of .submit -->
</form>
<?php else: ?>
<p class="thanks">Thank you for your Message! We will get back to you as soon as possible.</p>
<?php endif; ?>
</div><!-- end of #form -->
</div><!-- end of #formWrap -->
和java脚本： 在：
<script type="text/javascript">
var nameError = '<?php echo $error_messages['fullname']; ?>';
var emailError = '<?php echo $error_messages['email']; ?>';
var commentError = '<?php echo $error_messages['comment']; ?>';
</script>
：
window.addEvent('domready', function() {
// Get the form
var form = $('comments_form');
// if the form is found...
if (form) {
// obtain error fields
var name = $('fullname');
var email = $('email');
var comment = $('comment');
// Set the default status
var isValid = true;
// input error function for the error messages
var addError = function (field, msg) {
field.addClass('error'); // Add error class to field
var error = field.getParent().getElement('span') || new Element('span', {'class': 'error'}); // add error message if not already placed
error.set('text', msg); // error text msg
error.inject(field, 'after'); // Insert error message after field
};
// detach error function used to delete any error messages and remove the error class
var removeError = function (field) {
field.removeClass('error'); // Remove error class from form fields
var error = field.getParent().getElement('span'); // find any existing error messages
// destroy if error message
if (error) {
error.destroy();
}
};
// insert submit form event
form.addEvent('submit', function (e) {
// Test name length
if (name.get('value').length === 0) {
isValid = false;
addError(name, nameError);
} else {
isValid = true;
removeError(name);
}
// check email length
if (email.get('value').length === 0) {
isValid = false;
addError(email, emailError);
// check email validity
} else if (!email.get('value').test(/^([a-zA-Z0-9\+_\-]+)(\.[a-zA-Z0-9\+_\-]+)*@([a-zA-Z0-9\-]+\.)+[a-zA-Z]{2,6}$/)) {
isValid = false;
addError(email, emailError);
} else {
isValid = true;
removeError(email);
}
// check comment length
if (comment.get('value').length === 0) {
isValid = false;
addError(comment, commentError);
} else {
isValid = true;
removeError(comment);
}
// If form invalid then stop event happening
if (!isValid) {
e.stop();
}
});
}
});
感谢您的帮助！ =）
编辑： 控制台上出现了几个错误（加载页面时，而不是提交表单的人）：
答案 0 :(得分：0)
我已删除了之前的答案，因为您的代码存在很多问题。
这是jQuery等效的，删除了所有错误，所以它
$(function() {
// Get the form
var form = $('#comments_form');
// if the form is found...
if (form) {
// input error function for the error messages
var addError = function (field, msg) {
field.addClass('error'); // Add error class to field
var error = field.parent().find('span') || $('<span>', {'class': 'error'}); // add error message if not already placed
error.html(msg); // error text msg
field.after(error); // Insert error message after field
};
// detach error function used to delete any error messages and remove the error class
var removeError = function (field) {
field.removeClass('error'); // Remove error class from form fields
var error = field.parent().find('span'); // find any existing error messages
// destroy if error message
if (error) {
error.remove();
}
};
// insert submit form event
form.on('submit', function (e) {
// Set the default status
var isValid = true;
// Test name length
var name = $("#fullname");
if (name.val().length === 0) {
isValid = false;
addError(name, nameError);
} else {
removeError(name);
}
// check email length
var email = $("#email");
var emailVal = email.val();
if (emailVal.length === 0) {
isValid = false;
addError(email, emailError);
// check email validity
} else if (!/^([a-zA-Z0-9\+_\-]+)(\.[a-zA-Z0-9\+_\-]+)*@([a-zA-Z0-9\-]+\.)+[a-zA-Z]{2,6}$/.test(emailVal)) {
isValid = false;
addError(email, emailError);
} else {
removeError(email);
}
// check comment length
var comment = $("#comment");
console.log(comment.val())
if (comment.val().length === 0) {
isValid = false;
addError(comment, commentError);
} else {
removeError(comment);
}
// If form invalid then stop event happening
if (!isValid) {
e.preventDefault();
}
});
}
});