how to upload file and receive using ajax in javascript,php code example

Example 1: file upload in php through ajax

async function saveFile() 
{
    let formData = new FormData();           
    formData.append("file", sortpicture.files[0]);
    await fetch('/uploads', {method: "POST", body: formData});    
    alert('works');
}

Example 2: file upload in php through ajax

<?
$data = array();
    //check with your logic
    if (isset($_FILES)) {
        $error = false;
        $files = array();

        $uploaddir = $target_dir;
        foreach ($_FILES as $file) {
            if (move_uploaded_file($file['tmp_name'], $uploaddir . basename( $file['name']))) {
                $files[] = $uploaddir . $file['name'];
            } else {
                $error = true;
            }
        }
        $data = ($error) ? array('error' => 'There was an error uploading your files') : array('files' => $files);
    } else {
        $data = array('success' => 'NO FILES ARE SENT','formData' => $_REQUEST);
    }

    echo json_encode($data);
?>