ajax url won't call php file - php

Question

I am trying to update the user input ratings through ajax call. This one alert(performance_rating) returned the user input ratings properly. But, I have a problem with my url. it won't call user_ratings.php. I don't know why? I have tried alert function in user_ratings.php page. But, it won't alert.
I have the user_ratings.php file in siteurl.com/include/pages/user_ratings.php
How do I call my php file properly?
ajax request
$(function () {
$('#form').on('submit', function (e) {
performance_rating = $('input:radio[name=rating]:checked').val();
e.preventDefault();
$.ajax({
type: 'POST',
url: 'user_ratings.php',
data: {
rating: performance_rating
},
success: function() {
alert(performance_rating);
}
});
});
});

Answer 1

If you are sending your ajax request from localhost to your domain, then you have to use full site url in your ajax call as follows
$(function () {
$('#form').on('submit', function (e) {
performance_rating = $('input:radio[name=rating]:checked').val();
e.preventDefault();
$.ajax({
type: 'POST',
url: 'http://domain.com/include/pages/user_ratings.php',
data: {
rating: performance_rating
},
success: function() {
alert(performance_rating);
}
});
});
});

Answer 2

first its better you do this
define("URL", "http://siteurl.com/");
Then in the ajax url section write
url: '<?php echo URL ;?>includes/pages/user_ratings.php',

Answer 3

Put your FQDN (e.g. www.yoururl.com) before the user_ratings.php in your jQuery Ajax call. So change to this:
$(function () {
$('#form').on('submit', function (e) {
performance_rating = $('input:radio[name=rating]:checked').val();
e.preventDefault();
$.ajax({
type: 'POST',
url: 'http://www.yoururl.com/user_ratings.php',
data: {
rating: performance_rating
},
success: function() {
alert(performance_rating);
}
});
});
});