front.html

<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
  <title>Text Filtering API Demo</title>
  <script src="index.js"></script>
</head>
<body>
  <h1>Text Filtering API Demo</h1>

  <textarea id="inputText" rows="4" cols="50"></textarea>
  <br>
  <button id="filterButton">Filter Text</button>

  <div id="filteredText"></div>

  <script>
    document.getElementById('filterButton').addEventListener('click', async () => {
      const inputText = document.getElementById('inputText').value;
      const response = await fetch('./filter', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json'
        },
        body: JSON.stringify({ text: inputText })
      });
      const data = await response.json();
      document.getElementById('filteredText').textContent = data.filteredText;
    });
  </script>
</body>
</html>