[Hustle] Close popup by custom link content

wpmudev-hustle-custom-close.php

<?php
/**
 * Plugin Name: [Hustle] Close popup by custom link content
 * Plugin URI: https://premium.wpmudev.org/
 * Description: To make it work you need to add the following class on the link: hustle-custom-close
 * Author: Glauber Silva @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/
 * Task: SLS-1666 and SLS-959
 * License: GPLv2 or later
 *
 * @package WPMUDEV_Hustle_Close_Popup_By_Custom_Link_Content
 */

defined( 'ABSPATH' ) || exit;

function wpmudev_hustle_custom_close( ) {
    ob_start();
    ?>
        <script type="text/javascript">                                   
            var close_links = document.querySelectorAll('.hustle-custom-close');
            if ( typeof( close_links ) != 'undefined' && close_links != null ) {                
                for (i = 0; i < close_links.length; ++i) {                        
                    close_links[i].addEventListener('click', function() {                        
                        setTimeout(function(){                             
                            var close_btn = document.querySelector('.hustle-button-close');
                            if ( typeof( close_btn ) != 'undefined' && close_btn != null ) {                                                                      
                                close_btn.click();
                            }
                        }, 100);
                    })
                }
            }            
        </script>
    <?php
    $js = ob_get_clean();
    echo $js;
}
add_filter( 'wp_footer', 'wpmudev_hustle_custom_close' );