<div>
  <h1>Upload directories</h1>
  <input type="file" id="file-uploader" webkitdirectory />
  
   <ul id="pathList">
     
  </ul>
  
</div>

html {
  height: 100%;
}

body {
  background: #000000;
  color: #FFFFFF;
}

div {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  font-family: 'Roboto Mono', monospace;
}

const fileUploader = document.getElementById('file-uploader');
const pathList = document.getElementById('pathList');

function removeAllChildNodes(parent) {
    while (parent.firstChild) {
        parent.removeChild(parent.firstChild);
    }
}

fileUploader.addEventListener('change', (event) => {
  const files = event.target.files;
  console.log('files', files);
  
  removeAllChildNodes(pathList);
  
  [...files].forEach((file, index) => {
    let path = document.createElement('li');
    path.innerHTML = file.webkitRelativePath;
    pathList.appendChild(path);
  });
});