Is it possible to achieve this functionality using only JavaScript instead of PHP?

Yes, it is possible to achieve this functionality using only JavaScript instead of PHP. You can use JavaScript to make an AJAX request to a server-side endpoint that processes the data and returns the result. This way, you can handle the data processing and response handling entirely on the client-side. ```javascript // JavaScript code to make an AJAX request var xhr = new XMLHttpRequest(); xhr.open('POST', 'server_endpoint.php', true); xhr.setRequestHeader('Content-Type', 'application/json'); xhr.onreadystatechange = function() { if (xhr.readyState === XMLHttpRequest.DONE) { if (xhr.status === 200) { var response = JSON.parse(xhr.responseText); // Handle the response data here } else { console.error('Error: ' + xhr.status); } } }; var data = { key: 'value' }; xhr.send(JSON.stringify(data)); ```