javascript array last element

var my_array = /* some array here */;
var last_element = my_array[my_array.length - 1];var foods = ["kiwi","apple","banana"];
var banana = foods[foods.length - 1]; // Getting last elementarr.slice(-1)[0] var colors = ["red","blue","green"];
var green = colors[colors.length - 1]; //get last item in the array
var linkElement = document.getElementById("BackButton");
var loc_array = document.location.href.split('/');
var newT = document.createTextNode(unescape(capWords(loc_array[loc_array.length-2]))); 
linkElement.appendChild(newT);
var lastEle = arr.slice(-1)[0];
// or
var lastEle = arr.slice(-1).pop();