CODE EXAMPLE FOR JAVASCRIPT

last element in javascript

const arr = [1,2,3,4];
const last = arr[arr.length - 1];
console.log(last); // 4

const arr = [1,2,3,4];
const last = arr.at(-1);
console.log(last); // 4

const arr = [1,2,3,4];
const last = arr.findLast(x => true);
console.log(last); // 4