Let’s say you have an **array **of numbers (*but it could be an array of anything really*):

`const myNumbers = [1,2,3,4,5]`

You want the last number in the **array **but don’t care how many elements are in the **array**. The simplest way to get the last number in the array is to get the element who’s position is the same as the length of the array minus 1. The *minus 1* is because arrays are **zero **based, so the first element is accessed like so:

`const selectedNumber = myNumbers[0]`

*Therefore*, the easiest way to get the last element from an **array **without knowing how many elements are in the **array **is like this:

`const lastNumber = myNumbers[myNumbers.length - 1]`