shuffle.js

/*
 * Given an Array of Strings
 * This function will shuffle the String inside the array
 * Created by: Julio Cesar Fausto
 * http://github.com/jcfausto
 */

var phrases, phrases_count, random_index, random_phrase;

phrases = ['phrase1', 'phrase2', 'phrase3', 'phrase4'];

phrases_count = phrases.lenght;

while (phrases_count) {
  random_index = Math.floor(Math.random() * phrases_count);
  random_phrase = phrases[--phrases_count];
  phrases[phrases_count] = phrases[random_index];
  phrases[random_index] = random_phrase;
}

console.log(phrases);