https://kdu.ru/sites/all/modules/image_captcha_refresh/image_captcha_refresh.js?pmi1ow

1(function ($) {
2  Drupal.behaviors.imageCaptchaRefresh = {
3    attach: function (context) {
4      $('.reload-captcha', context).not('.processed').bind('click', function () {
5        $(this).addClass('processed');
6        var $form = $(this).parents('form');
7        // Send post query for getting new captcha data.
8        var date = new Date();
9        var url = this.href + '?' + date.getTime();
10        $.get(
11          url,
12          {},
13          function (response) {
14            if(response.status == 1) {
15              $('.captcha', $form).find('img').attr('src', response.data.url);
16              $('input[name=captcha_sid]', $form).val(response.data.sid);
17              $('input[name=captcha_token]', $form).val(response.data.token);
18            }
19            else {
20              alert(response.message);
21            }
22          },
23          'json'
24          );
25        return false;
26      });
27    }
28  };
29})(jQuery);