Dynamic Counter for Total Number of Website Favorites

So I have what I would call a static counter for the total number of website favorites currently added to the CMS. It works in a sort of static manner, in so much that it ONLY updates when the user loads/reloads the page. It doesn't dynamically /immediately update as a user adds an item to Favorites. Check it out:
Have to call up the website favorites records
// get favorite record nums
$tableOrTag = mysql_escape('forms'); // update this with your table or tag name
$currentUserNum = mysql_escape( @$CURRENT_USER['num'] );
$favoriteNumsQuery = "SELECT recordNum FROM {$TABLE_PREFIX}_website_favorites WHERE tableOrTag = '$tableOrTag' AND createdByUserNum = '$currentUserNum'";

// load matching records
list($favoriteRecords, $favoriteMetaData) = getRecords(array(
'tableName' => 'forms', // update this with your table or tag name
// 'perPage' => '10',
'where' => " num IN ($favoriteNumsQuery) ",
'loadCreatedBy' => false,
'allowSearch' => false,
));

And here is the counter.

<?php
$cart_count = 0;
foreach ($favoriteRecords as $record) {
$cart_count++;
}

echo $cart_count;
?>

Is there a way to, or does anyone know of a way to dynamically update the counter, so that as a user adds or removes a Favorite, that the counter will immediately w/o refreshing the page update the current count.