function reference
nounUK /ˈfʌŋkʃən ˈrɛfrəns/
US /ˈfʌŋkʃən ˈrɛfrəns/
A function reference is a way to point to a piece of code so you can use it later.
She stored a function reference in the variable so the button could call it later.
OTHER MEANINGS
2. In programming documentation, a function reference is a page that lists how a function works and what inputs it takes.
Check the function reference to see what arguments the sort method accepts.
3. In some languages, a function reference is a first-class value that can be passed around like any other object.
JavaScript lets you pass a function reference as an argument to another function.
4. A function reference can mean a named link to a specific routine in a library or API.
The manual includes a function reference for every routine in the graphics library.