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Carissa Thomas
2,715 PointsConfused as to where the list parameter comes from. I thought parameters were defined by the caller of the function?
Yeah, where does the list parameter come from?
2 Answers
Darrell Conklin
22,099 Points"list" is simply a placeholder description of the parameter that will passed to the function and will be replaced with the parameter passed to it.
Cindy Lea
Courses Plus Student 6,497 PointsThe caller function provides the values for the function & the function itself has parameters that it uses within the function
Arikaturika Tumojenko
8,897 PointsArikaturika Tumojenko
8,897 PointsHow can you use a placeholder before you defined it? As far as understand, the list array didn't exist when we started to write the function, it only existed after the loop ran.
Oliver Duncan
16,642 PointsOliver Duncan
16,642 PointsArikaturika: the playlist array was already defined and passed as an argument to the printPlayList function. This function used the values within the playlist array to generate an ordered list in HTML, and print it to the page.
The 'placeholder' or argument to a function doesn't have to be defined before using it, which is what makes functions so useful: you can use them more than once using different arguments, making your code more efficient and easier to read. In this case, you could print as many different lists as you wanted just by calling the same function and passing it different arguments each time.