var my_array = /* some array here */; var last_element = my_array[my_array.length - 1];
const arr = [1,2,3] ; console.log(arr[arr.length - 1]);
var colors = ["red","blue","green"]; var green = colors[colors.length - 1]; //get last item in the array
const lastItem = colors[colors.length - 1]