Answers for "generate random from array"

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

js get random from array

//Make all arrays have "random" method
Array.prototype.random = function() {
    return this[Math.floor(Math.random() * this.length)];
}

//Call "random" method on an array
var result = ["Hello", "world"].random();