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JavaScript

Posted by ad19
ad19
1,827 Points

How is "list" in the for loop connecting to the length of the array playList?

In the for loop, the loop is running as long as i < list.length, but I don't understand how the list is connecting to the amount of items in the playList array. How did this function determine that there were 6 items in the array?

4 Answers

ad19
ad19
1,827 Points

Thanks Chris! I was confused on how "list" was connected to the amount of items in the array "playList". But now i understand. "list" only receives a value once the function is called. At the very end the program the function is called like this:

printList(playList);

Since the array "playList" was passed in the function, the function runs and .length will count the amount of items in playList.

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

For this video?

https://teamtreehouse.com/library/twodimensional-arrays

There the condition for the loop is i < songs.length where songs is passed in as a parameter.

If not could you provide a link?

ad19
ad19
1,827 Points
ad19
ad19
1,827 Points

Hi Kris,

Thanks for the response, its actually for this video: https://teamtreehouse.com/library/using-for-loops-with-arrays

chris robinson
chris robinson
2,818 Points
chris robinson
chris robinson
2,818 Points

It determines that there were six items in the array by the length property, length will return all values so when the code is ran the program will see and identify all that are in the collection