js get last element of array without knowing length code example

Example 1: javascipt get last element of array

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

Example 2: javascript take last element of array

let array = [1,2,3,4,5];
let lastElement = array.pop();

// array -> [1,2,3,4];
// lastElement = 5;