Case 7-2
Ryan is working with arrays in JavaScript for the first time. He is creating a cycling banner ad for his bicycle repair shop.
-Ryan's ad includes four images so he creates a four-element array.The correct indices for a four-element array in JavaScript are ____.
A) 0,1,2,and 3
B) 1,2,3,and 4
C) 2,4,6,8
D) -1,0,+1,+2

Question

Quizplus · Accepted Answer

In JavaScript arrays, the index of the first element is 0, not 1. Therefore, a four-element array would have indices 0, 1, 2, and 3. Option B has indices starting at 1 and ending at 4, which is one more than the number of elements in the array. Option C has indices that are not in sequence and are larger than the number of elements. Option D has negative indices which are not applicable in this case.

Case 7-2 Ryan Is Working with Arrays in JavaScript for the First