None of those require JS at all, except the pizza monitor.
How can you send information to your backend server without JS?
Back in the days (I'm 33 and thus quite old in web years) we would use forms
Submit buttons or links. Then the whole page reloads.
There might be tricks using CSS and images too.
Many people use the web to buy things. Button presses, logins, pizza tracking monitors, they all use JS.