Glossary term
What is scope? Meaning for developers
In JavaScript Core
Where a variable can be seen from. A function can see its own variables and everything its parents can see, but not the other way round.
Learn it properly · JavaScript CoreLesson 7: Scope Chain and Lexical EnvironmentLesson 4 showed one function looking outward to Global. This lesson extends that into a full chain — as many levels deep as your code is nested — and gives it a proper name: lexical scope, decided entirely by where you physically wrote your code, never by which function called which.In API Design
A named permission on a token, such as orders:read, that limits what the app may do.
Learn it properly · API DesignLesson 6: API Authentication and Authorization: API Keys, OAuth 2.0 and ScopesAPI keys, bearer tokens, OAuth 2.0 flows in plain words, scopes, and common mistakes. Ties back to the Security series.