ถ้าเราต้องการส่งค่าฟอร์มไปแบบเอแจ็กซ์ โดยก่อนส่งค่าไปให้ตรวจสอบเบื่องต้นก่อน สามารถทำได้โดยใช้เมธอด validate()
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery Validation : AJAX form</title>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet" type="text/css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="http://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="http://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<form action="login.php" id="formA" method="post">
<div class="form-group">
<label>User
<input type="text" name="user" required minlength="5" maxlength="20">
</label>
</div>
<div class="form-group">
<label>Password
<input type="password" name="password" required minlength="10" maxlength="50">
</label>
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
<script src="assets/jQuery/jquery.min.js"></script>
<script src="plus/jQuery/jquery-validation/jquery.validate.min.js"></script>
<script>
$(function()
{
form = $('#formA');
validation = form.validate();
form.on('submit', function(event)
{
event.preventDefault();
/* check form validation */
if(validation.form() == true)
{
$.ajax({
data: form.serialize(),
dataType : 'json',
success: function(data){
$('#predictionCompaireA').html(data);
},
type: 'POST',
url: 'login.php'
});
}
});
});
</script>
</body>
</html>