Send file with ajax request in form data

send-request.js

$('#frm-human-res').submit(function (e) {
    e.preventDefault();

    var form_data = new FormData(),
        cv_file = document.getElementById("upload-btn").files[0];

    var other_data = $(this).serializeArray();
    $.each(other_data, function (key, input) {
        form_data.append(input.name, input.value);
    });
    form_data.append('file', cv_file);

    $.ajax({
        url: $(this).attr('action'),
        method: 'POST',
        processData: false,
        contentType: false,
        data: form_data,
        success: function (result) {
            $('body').append(result);
        }
    });
});