Create CODE_Form_Input.gs

This is the Google Script code that runs on the server.  All this is for is to show you the connection between the front end JavaScript code, that triggers the .gs code to run.  It doesn't actually save data anywhere.  To do that I'd need to provide a place to save the data, and leave it accessible.  For your application, you need to set up your own storage location.  It could be a spreadsheet, or a Google Fusion Table, or other options.