how to get the index of the last element of an array in javascript code example

Example 1: javascript get last element of array

var foods = ["kiwi","apple","banana"];
var banana = foods[foods.length - 1]; // Getting last element

Example 2: javascript code for find the last element in array

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