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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Two-Dimensional Arrays

Posted by Julia T
Julia T
2,755 Points

Shouldn’t line 1’s var playlist be var songs?

…so that the songs.length make sense?

1 Answer

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

The parameter is given the name "songs" in the function declaration, so that name is used throughout the function. But a parameter is only a placeholder for the actual argument that is passed when the function is called.

The actual variable name passed in doesn't need to be the same as the parameter name, and in fact it's usually considered good practice to not use exactly the same name to avoid possible confusion when reading the program. But it is also good practice to have the names somewhat descriptive of what they contain, and both "songs" and "playlist" meet this criteria.

Julia T
Julia T
2,755 Points

aah...I'm still mixing up parameters and arguments. So much information in one day my brain is hurting.... Thank you so much, Steven, for clearing that up for me (and so fast too!). 😭😭

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

The speed was simply coincidence, but I'm glad I could help. Happy coding!