find last element in array javascript

var numbers = ["one", "two", "three"];
var lastnumber = numbers[numbers.length - 1];
console.log(lastnumber);

arr.slice(-1)[0] 

var heroes = ["Batman", "Superman", "Hulk"];
var lastHero = heroes.pop(); // Returns last elment of the Array
// lastHero = "Hulk"

var colors = ["red","blue","green"];
var green = colors[colors.length - 1]; //get last item in the array

arr.slice(-1)[0] 

var colors = ["black", "white", "red", "yellow"];
var yellow = colors[colors.length - 1];

const numArray = [1,2,3,4,5];
const lastNumber = numArray.reverse()[0]; 

if (loc_array[loc_array.length - 1] === 'index.html') {
   // do something
} else {
   // something else
}

let colors = ["red", "yellow", "green"];
let lastELement = colors[colors.length - 1]