Script include for list collector in servicenow

1. What does a script include Do Servicenow?
2. How many types of script includes are there in Servicenow?

What does a script include Do Servicenow?

Script Includes are reusable server-side script logic that define a function or class. Script Includes execute their script logic only when explicitly called by other scripts. There are different types of Script Includes: On demand/classless.

How many types of script includes are there in Servicenow?

There are different types of Script Includes: On demand/classless. Extend an existing class. Define a new class.