https://www.hqsc.govt.nz/_resources/vendor/nzta/silverstripe-siteb…/javascript/site-banner.js?m=1760495202

1(function () {
2  function getStorageKey(id) {
3    return 'SiteBanner_' + id + '_Dismiss';
4  }
5
6  // Called when a user closes a banner.
7  function callback(event) {
8    var button = event.currentTarget;
9    var bannerId = button.getAttribute('data-id');
10    var banner = document.getElementById('site-banner-' + bannerId);
11
12    // The banner can only be closed once, so we don't need the click handler anymore.
13    button.removeEventListener('click', callback);
14
15    // Hide banner from the page
16    banner.classList.add('site-banner--hidden');
17    banner.setAttribute('aria-hidden', 'true');
18
19    // Make sure the banner doesn't re-appear when the page is re-loaded.
20    sessionStorage.setItem(getStorageKey(bannerId), 'true');
21  }
22
23  var bannersNodeList = document.querySelectorAll('.site-banner');
24  var index = 0;
25  var bannerId = 0;
26  var button = null;
27
28
29  for (index; index < bannersNodeList.length; index += 1) {
30    bannerId = bannersNodeList[index].getAttribute('data-id');
31
32    // Don't display banners which have been dismissed.
33    if (sessionStorage.getItem(getStorageKey(bannerId))) {
34      continue;
35    }
36
37    // Display the banner
38    bannersNodeList[index].classList.remove('site-banner--hidden');
39    bannersNodeList[index].setAttribute('aria-hidden', 'false');
40
41    // Add a click event the "dismiss" button, if it exists.
42    button = document.querySelector('#' + bannersNodeList[index].id + ' .site-banner-close');
43
44    if (button) {
45      // hide close button for browsers without sessionStorage compatibility
46      if (!sessionStorage) {
47        button.style.display = 'none';
48      } else {
49        button.addEventListener('click', callback);
50      }
51    }
52  }
53}());