ECMAScript Language Specification, Version 11

14.1. Function Definitions

5 Documented Misconceptions

FunctionOverloading

It is possible to create multiple functions with the same name but with different signatures

FunctionsCannotBeImmediatelyInvoked

Functions cannot be called in the expression in which they are defined

FunctionsMustBeNamed

Every function definition requires an associated name

NumberOfParametersMatchArguments

Functions must be called with the same number of arguments as defined in their signature

ObjectAsParameterIsCopied

Objects are passed by value