How can I create a file upload progress bar?

How can I create a file upload progress bar?

You can create a file upload progress bar using HTML, CSS, and JavaScript. Would you like a code example?

Yes, please provide a simple code example.

Here's a basic example:

<input type="file" id="fileInput">
<div id="progressBar" style="width: 100%; background: #f3f3f3;">
  <div id="progress" style="width: 0%; height: 30px; background: #4caf50;"></div>
</div>
<script>
  const fileInput = document.getElementById('fileInput');
  const progressBar = document.getElementById('progress');

  fileInput.addEventListener('change', (event) => {
    const file = event.target.files[0];
    const xhr = new XMLHttpRequest();
    xhr.open('POST', '/upload', true);

    xhr.upload.onprogress = (e) => {
      if (e.lengthComputable) {
        const percentComplete = (e.loaded / e.total) * 100;
        progressBar.style.width = percentComplete + '%';
      }
    };

    xhr.send(new FormData().append('file', file));
  });
</script>

What if I want to customize the appearance of the progress bar?

You can customize the appearance using CSS. For example, change the background color or add borders to the progress bar.