Adds a .randomElement() method to lists by extending Object.prototype

randomElement.js

//This little snippet does the bad practice of overloading default JavaScript objects.  I know it's bad taste, sue me.
//It only works on arrays.
//['a', 'b', 'c'].randomElement()
Object.prototype.randomElement = function(){
	var randomIndex = Math.floor(Math.random() * this.length);
	return randomString = this[randomIndex];
}