Function Scope ↔ Variable access restrict to only inside function body.
aka Local-Scope
References
var↔ JS Keyword to Declare mutable Variable with Function Scope{ var notPrivate = true }↔ true. readable outside Block sincevaris Function ScopedFunction EC↔ EC for Function Scope code"noUnusedLocals": true↔ to warn/throw when Function Scope Variable unused (inside function)