<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>CSV Upload</title> </head> <body> <h1>Upload CSV File</h1> <form id="uploadForm" enctype="multipart/form-data" method="post"> <input type="file" name="file" accept=".csv"> <input type="submit" value="Upload"> </form> <div id="result"></div> <script> document.getElementById('uploadForm').addEventListener('submit', function(event) { event.preventDefault(); const form = new FormData(this); fetch('/upload_csv', { method: 'POST', body: form }) .then(response => response.json()) .then(data => { document.getElementById('result').innerText = JSON.stringify(data, null, 2); }) .catch(error => { console.error('Error:', error); }); }); </script> </body> </html>