JS: returnLast() (returns last in array)

returnLast.js

/**
 * Created by Alexander Nielsen. alex@hitecherik.site11.com
 * 2 January 2013
 */

/**
 * Returns the last item in an array
 * @param  {Array} arr Array to return last of
 * @return {var}     The last item in the array
 */
function returnLast(arr){
	var lastIndex = arr.length - 1;
	return arr[lastIndex];
}

// example of use
var myArray = [1, 2, 10, 400, 50, 98, 43]; //array of 7 integers
var lastItem = returnLast(myArray); //in this case 43