https://www.uni-erfurt.de/_assets/23c138f87ce1b0461e894a8dcbbb57d6…/Captcha/CaptchaController.js?1788958884

1var Pluswerk = Pluswerk || {};
2Pluswerk.UniErfurt = Pluswerk.UniErfurt || {};
3Pluswerk.UniErfurt.Captcha = Pluswerk.UniErfurt.Captcha || {};
4
5Pluswerk.UniErfurt.Captcha.CaptchaController = function () {
6    const button = document.querySelector('#js-change-image');
7    const loadingClass = document.querySelector('.powermail_captchaimage-wrap');
8    const changeImage = document.querySelector('.powermail_captchaimage')
9
10    this.mainInit = function () {
11        if (changeImage !== null) {
12            button.addEventListener('click', function (event) {
13                let url = this.getAttribute('data-url');
14                let httpRequest = new XMLHttpRequest();
15    
16                event.preventDefault();
17    
18                // add loading gif
19                loadingClass.classList.add('loading');
20                
21                httpRequest.onreadystatechange = function () {
22                    // on success replace captcha img with data
23                    changeImage.setAttribute('src', '/' + httpRequest.responseText);
24    
25                    if(httpRequest.readyState == 4 && (httpRequest.status == 200)) {
26                        // remove loader gif
27                        loadingClass.classList.remove('loading');
28                    }
29                }
30    
31                httpRequest.open("GET", url);
32                httpRequest.send();
33            });
34        }
35    };
36};