Scope and Closures: Counting the parameter of Console.log() as a target variable.

[algotrex]

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Edition: (1st or 2nd) 2nd

Book Title: Scope & Closures

Chapter: 1

Section Title: What's the Scope?

Question: In the section "Compiler Speak" where you enumerate all the source and target variables, you mention there are 5 target variables, I am wondering why we don't count the first argument of the console.log() function in the last line of the code: console.log(nextStudent); As I understand the function log() takes an obj1 parameter (see MDN documentation), so why don't we count this as a target variable for the same reason we count the studentID parameter as a target variable when getStudentName is invoked?

[getify]

The nextStudent there is an argument, not a parameter. The difference is in what's passed in at the call-site vs what's received in the function signature. An argument is a value or source-reference variable, whereas a parameter is a target-reference. If we were showing the implementation (internally in the engine) of the log(..) function, we'd potentially list out a parameter name for that first parameter, and that would be a target-reference.

[algotrex]

Thanks for the feedback!