index.html

<!doctype html>
<html>
  <head>
    <title>Njordr</title>
  </head>
  <body>
    <input type="checkbox" id="multiselect"> Multiselect
    <br>
    <button id="fotoweb">Browse FotoWeb</button>
    <script src="/assets/plugin.js"></script>
    <script>
      var fotowebCheckbox = document.getElementById('multiselect');
      var fotowebButton = document.getElementById('fotoweb');

      function openPopup() {
        window.fotoweb.open(
          {
            multiselect: fotowebCheckbox.checked,
            apiUrl: 'https://skadi.app.dnt.no/v1',
            hiddenArchives: ['Alle bilder', 'Alle mine bilder'],
            promotedArchives: ['DNT Oslo og Omegn', 'DNT sentralt', 'Blinkskudd'],
          },
          function callback(selected) {
            console.log('Look what I got!', selected);
          },
          function errorHandler(err, info) {
            console.error('OMG, an err!', err, info);
          }
        );
      }

      fotowebButton.onclick = openPopup;
    </script>
  </body>
</html>