Autocomplete Taxonomy Terms in Wordpress

functions.php

//Custom Autocomplete
add_action('wp_ajax_nopriv_get_listing_names', 'ajax_listings');
add_action('wp_ajax_get_listing_names', 'ajax_listings');

function ajax_listings() {
	global $wpdb; //get access to the WordPress database object variable

	//get names of all taxonomy terms 
	$name = '%'.$wpdb->esc_like(stripslashes($_GET['name'])).'%'; //escape for use in LIKE statement
	$sql = "SELECT term.term_id as id, term.name as post_title, term.slug as guid, tax.taxonomy FROM $wpdb->term_taxonomy tax 
			LEFT JOIN $wpdb->terms term ON term.term_id = tax.term_id WHERE 1 = 1 
			AND term.name LIKE %s
			AND tax.taxonomy = 'country'
			ORDER BY tax.count DESC
";

	$sql = $wpdb->prepare($sql, $name);
	
  $wpdb->show_errors();
	$results = $wpdb->get_results($sql);
  //$wpdb->print_error();       

   if (count($results)> 0){   //check if the result is empty
	//copy the titles to a simple array
	$titles = array();
	foreach( $results as $r )
	$titles[] = addslashes($r->post_title);
        echo json_encode($titles); //encode into JSON format and output
        }
else {
 $message = "No results found";
 echo json_encode($message); 
}
		
	
	die();
}

//enqueue custom JS
function search_js() {
//load Pixabay's AutoComplete 
        wp_enqueue_style('autocomplete_css', get_stylesheet_directory_uri().'/css/jquery.auto-complete.css');
	wp_enqueue_script('jquery-autocomplete', get_stylesheet_directory_uri().'/js/jquery.auto-complete.min.js', array('jquery'));
	
//load your JS custom file
	wp_enqueue_script('mysite-js', get_stylesheet_directory_uri().'/js/search.autocomplete.js', array('jquery', 'jquery-autocomplete'));
        wp_localize_script( 'mysite-js','myAjaxData', array( 'ajaxurl' => admin_url('admin-ajax.php') )
  );
}
add_action('wp_enqueue_scripts', 'search_js');

search.autocomplete.js

jQuery(document).ready(function($) {	
	
	$('#s').autoComplete({
		delay: 10,
		cache: true,
		minChars: 2,
		source: function(name, response) {
			$.ajax({
				type: 'GET',
				dataType: 'json',
				url: myAjaxData.ajaxurl,
				data: 'action=get_listing_names&name='+name,
				success: function(data) {
					response(data);
				},
				error: function (response) {
				}
			
			});
		}
	});
 
});