pick random elements in an array code example

Example 1: Javascript get random item from array

var colors = ["red","blue","green","yellow"];
var randomColor = colors[Math.floor(Math.random()*colors.length)]; //pluck a random color

Example 2: how to get random item from an array

//Function to make it easier
Array.prototype.random = function() {
    return this[Math.floor((Math.random() * this.length))];
};

var colors = ["red","blue","green","yellow"];
var randomColor = colors.random();