Zwróć dwa ostatnie wartości tablicy w JavaScript
arr.slice(Math.max(arr.length - 5, 1))
Fancy Fox
arr.slice(Math.max(arr.length - 5, 1))var arr1 = [0, 1, 2, 3, 4, 5, 6, 7],
arr2 = [0, 1, 2, 3];
document.body.innerHTML = 'ARRAY 1: ' + arr1.slice(1).slice(-5) + '<br/>ARRAY 2: ' + arr2.slice(1).slice(-5);