This JavaScript array code deals with negative index numbers. However, the output does not include the negative index number in the count of elements, only displaying a count of 3.
Sample Code:
let abc = ['gnagar', 'ahmedabad', 25];
console.log(abc, typeof(abc));
console.log(abc[-1]);
abc[-1] = 'abc';
console.log(abc, typeof(abc));
console.log(abc[-1]);