File: example.js

 /*
  * Copyright (C) Chi Hoang - All Rights Reserved
  * Unauthorized copying of this file, via any medium is strictly prohibited
  * For educational purpose only
  * Written by Chi Hoang March 2016
  *
  */
window.onload = function ready ()
{
 l = new Publisher(new List());
 for (var i=0;i<10;i++) {
   l.AddAuthor(new Subject(100),i,i%2);
 }
 
 var t = new Date().getDate() + (6 - new Date().getDay() - 1) - 7 ;
 var d = new Date();
 d.setDate(t);
 lastFriday = (('0' + (d.getDate())).slice(-2) + '.'
    + ('0' + (d.getMonth() + 1)).slice(-2)
    + '.' + d.getFullYear());
 console.log(lastFriday);

 for (var i=0;i<200;i++) {
   l.AddBook(new Subject(100), "name_"+i%10,i%10,i%3,(i%3==0 ? lastFriday : 0));
 }
  console.log(l.observers);
}