如何仅使用纯Javascript代码列出HTML页面上目录中的文件

// HTML部分
<input type="file" id="fileInput" multiple>
<ul id="fileList"></ul>

// JavaScript部分
document.getElementById('fileInput').addEventListener('change', function(e) {
  var files = e.target.files;
  var targetDirectory = '目标目录路径';

  var fileList = document.getElementById('fileList');
  fileList.innerHTML = '';

  for (var i = 0; i < files.length; i++) {
    var file = files[i];
    var relativePath = file.webkitRelativePath;
    
    if (relativePath.startsWith(targetDirectory)) {
      var fileName = relativePath.substring(targetDirectory.length);
      var listItem = document.createElement('li');
      listItem.textContent = fileName;
      fileList.appendChild(listItem);
    }
  }
});