https://portal.voltdeutschland.org/de/assets/iframe.js

1const iFrameId = 'portal-voltdeutschland-org-donate';
2
3window.addEventListener('message', (event) => {
4  if (event.data && event.data.iFrameHeight) {
5    const iFrame = document.getElementById(iFrameId);
6    iFrame.style.height = event.data.iFrameHeight + 'px';
7  }
8});
9
10const queryString = window.location.search;
11const urlParams = new URLSearchParams(queryString);
12
13const iFrame = document.getElementById(iFrameId);
14
15const possibleArguments = [
16  'targetId',
17  'optionSet',
18  'single',
19  'givenName',
20  'surname',
21  'line',
22  'city',
23  'zip',
24  'country',
25  'mail',
26  'value',
27  'interval',
28];
29
30if (iFrame != null) {
31  let src = iFrame.src;
32  if (src == null || src == '')
33    src = 'https://portal.voltdeutschland.org/de/donate?';
34
35  if (src.includes('?')) {
36    src = src.concat('&');
37  } else {
38    src = src.concat('?');
39  }
40
41  for (const arg of possibleArguments) {
42    const value = urlParams.get(arg);
43    if (urlParams.has(arg) && value != null && src.includes(arg))
44      src = src.concat('&', arg, '=', value);
45  }
46
47  Array.from(urlParams.keys())
48    .filter((c) => c.startsWith('utm') || c.startsWith('tag'))
49    .forEach((key) => (src = src.concat('&', key, '=', urlParams.get(key))));
50
51  src = src.concat('&tag_frame_referrer=', document.referrer);
52  src = src.concat('&tag_frame_location_origin=', document.location.origin);
53  src = src.concat('&tag_frame_location_pathname=', document.location.pathname);
54
55  iFrame.src = src;
56}