Can you send data with Ajax without getting response?

Can you send data with Ajax without getting response?

Hi, I would like to send my form data to a php file but not to get any response. I want to send an ID so that PHP can do MySQL search and generate a PDF file. Problem seems to be that PHP is responding something back to HTML and that is messing my code.

So I just want to send the data and run the scripit in PHP so that nothing is returned back to HTML.

Thanks for any response.