get only last string in array javascript code example

Example 1: javascript remove last character from string

var str = "Hello";
var newString = str.substring(0, str.length - 1); //newString = Hell

Example 2: return last two values of array in javascript

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);