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JavaScript Treehouse Club - MASH MASH - JavaScript Stuff You Can Change

Ahmet Popaj
Ahmet Popaj
1,640 Points
Posted by Ahmet Popaj
Ahmet Popaj
1,640 Points

sorry to ask, shouldn't the first function output undefined as arrays start from 0 index?

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1 Answer

Tanja Schmidt
Tanja Schmidt
11,798 Points
Tanja Schmidt
Tanja Schmidt
11,798 Points

It actually shouldn't : You're absolutely right that the items in the array start counting on 0 - but that item that has the index 0 still counts as an item. Hence the items with the indices of 0, 1, 2 and 3 make a total of 4 items - and random_number(4) picks correctly one random index out of the four that form the array.(= 0, 1, 2, 3). I hope this helps!

Ahmet Popaj
Ahmet Popaj
1,640 Points
Ahmet Popaj
Ahmet Popaj
1,640 Points

thank you very much.