.at()

Takes an integer value and returns the item at that index, allowing for positive and negative integers. Negative integers count back from the last item in the array.

Examples:

let array = [5, 12, 8, 130, 44];
let element = array.at(-2);
console.log(element); // 130

let pets = ['cat', 'dog', 'hamster'];
let pet = pets.at(1);
console.log(pet); // 'dog'