All About Hidden Form Fields
Here you can find information about Hidden form Feilds. Enjoy!
What are They?
A hidden field is a field on a web form that is not invisible to the user, that is, it is not displayed on screen. This lets web developers include data that cannot be seen or modified by users when a form is submitted. If a field is flagged as hidden, it is not displayed on-screen. But the field’s name and value are stored with the form and are sent back to the application when the form is user submitted.

Why/when it is appropriate to use
A hidden field is used to store information regarding what database record needs to be updated (and how) when the form is submitted.
Hidden fields also allow the programmer to pass values to form elements in a subtle way. An experienced web developer will utilize these fields to pass temporary, or session-based data, from one form to another or to store information that has already been entered in by the user.
Security considerations
None
Links to resources demonstrating/explaining use
Broadly, Claire."Hidden HTML Field: Using Correctly In Your Code." html.com https://html.com/input-type-hidden/ Accessed 11/9/2020.