Load Forminator Form via Ajax

functions.php

<?php
// The following Ajax handler is inside a loaded PHP file,
// such as a plugin, or in this sample, the functions.php file.

add_action('wp_ajax_my_get_support', 'ajax_my_get_support');

/**
 * Ajax handler that gernates the form with all 
 * required JS files and CSS rules.
 */
function ajax_my_get_support() {
  // Forminator needs the DOING_AJAX flag to 
  // correctly enqueue everything.
  if ( ! defined( 'DOING_AJAX' ) ) {
    define( 'DOING_AJAX', true );
  }
  if ( ! defined( 'WP_ADMIN' ) ) {
    define( 'WP_ADMIN', true );
  }

  ob_start();
  echo do_shortcode('[forminator_form id="1234"]');

  // Add the JS files and inline styles, etc.
  // Since this is an ajax request, this should only 
  // output Forminator-related code.
  print_head_scripts();
  do_action( 'wp_footer' );
  print_late_styles();
  print_footer_scripts();

  $code = ob_get_clean();

  wp_send_json_success( $code );
}

script.js

// This JS file is loaded by the theme:

(function() {
  // The button with the CSS class "get-support" loads the form.
  jQuery('.get-support').on('click', load_support_form);

  // The form is displayed in a div tag with the CSS class "support-form".
  function load_support_form() {
    jQuery.get('/wp-admin/admin-ajax.php?action=my_get_support')
    .then(function(response) {
      jQuery('.support-form').html(response.data);
    });
  }
})();