I have gotten to the point where my application gets the survey results in a function in my application using

<form id="survey_result" action="survey_results" method="POST">

'the survey'

<div class="form-group" style="margin-top:30px;">
    <button class="btn btn-lg btn-primary">Submit form</button>
</div>

But I need to send in a few fields that the user is not inputting that will help my application write out the data correctly. For example I need to send in the email address of the user "tom@gmail.com".

How can I do this?