Use formData with Post method
Extra data can be passed to the script as either a querystring if the method option is set to ‘get’, or via the headers if it’s set to ‘post’. This is all done with the help of the formData option. Depending on what you’ve set as the method option (‘post’ or ‘get’), you can retrieve the information sent in the formData option at server side.
For more detils Please refer Passing Extra Data