Question

Imagine you have this code:

var a = [1, 2, 3];
a) Will this result in a crash?

a[10] = 99;
b) What will this output?

(a[6]);

Answer 1

The given code will not crash. The value 99 will be added at index 10 of the array 'a'. However, since 'a' only has 3 elements, a[6] will output 'undefined'.

Step-by-step explanation:

The given code: var a = [1, 2, 3]; a[10] = 99;

1. Will not result in a crash.
2. It will add the value 99 at index 10 of the array 'a'. However, since the array 'a' only has 3 elements, the indices 0-9 remain undefined.
3. Therefore, a[6] will output 'undefined'.