PHP Mailer "Thank You" Message After Form Is Sent - php

Question

I have a PHP form ready, with sucesss message after the form is being sent. Thing is that the message shows after the page is redirected to the phpmailer.php
How can I make the message show after the user clicks submit? My final goal is to make the form disappear and show the thank you message instead.
<?php session_start();
if(isset($_POST['Submit'])) {
$youremail = 'email-here#gmail.com';
$fromsubject = 'domain-here.com';
$name = $_POST['name'];
$mail = $_POST['mail'];
$message = $_POST['message'];
$to = $youremail;
$mailsubject = 'Masage recived from'.$fromsubject.' Contact Page';
$body = $fromsubject.'
The person that contacted you is '.$name.'
E-mail: '.$mail.'
Message:
'.$message.'
|---------END MESSAGE----------|';
echo "Thank you fo your feedback.";
mail($to, $subject, $body);
} else {
echo "You must write a message";
}
?>
Here's the PHP code:
Thanks in advance !

Answer 1

Use ajax in your mail page, make the process page is seperate from the write page. After user clicks 'Send', post the data to the process page and respond with a text message or json data, and show the message on the write page
$.ajax({
url: 'your-url-to-send-mail-page',
type: 'POST',
data: maildata,
async: true,
dataType: 'text',
processData: false,
success: function(data) {
alert(data);
},
error: function(data) {
alert('An error occurs!');
}
});
------UPDATE------
write.php :
<form id="mailForm">
<input type="text" name="Submit" value="" />
<label for="title">Title:</label>
<input type="text" name="title" id="title" value="" />
<textarea name="content" rows="30" cols="50"></textarea>
<button id="sendBtn">Send</button>
</form>
<script type="text/javascript">
var maildata = new FormData($("#mailForm")[0]);
$.ajax({
url: 'send.php',
type: 'POST',
data: maildata,
async: true,
dataType: 'text',
processData: false,
success: function(data) {
alert(data);
},
error: function(data) {
alert('An error occurs!');
}
});
</script>
so it should alert "Thank you fo your feedback." after click on the send button.