Functional programming.js

// tabs is an array of titles of each site open within the window
var Window = function(tabs) {
  this.tabs = tabs; // we keep a record of the array inside the object
};

// When you join two windows into one window
Window.prototype.join = function (otherWindow) {
  this.tabs = this.tabs.concat(otherWindow.tabs);
  return this;
};

// When you open a new tab at the end
Window.prototype.tabOpen = function (tab) {
  this.tabs.push('new tab'); // let's open a new tab for now
  return this;
};

// When you close a tab
Window.prototype.tabClose = function (index) {
  var tabsBeforeIndex = this.tabs.splice(0, index); // get the tabs before the tab
  var tabsAfterIndex = this.tabs.splice(1); // get the tabs after the tab

  this.tabs = tabsBeforeIndex.concat(tabsAfterIndex); // join them together 
  return this;
 };

// Let's create three browser windows
var workWindow = new Window(['GMail', 'Inbox', 'Work mail', 'Docs', 'freeCodeCamp']); // Your mailbox, drive, and other work sites
var socialWindow = new Window(['FB', 'Gitter', 'Reddit', 'Twitter', 'Medium']); // Social sites
var videoWindow = new Window(['Netflix', 'YouTube', 'Vimeo', 'Vine']); //  Entertainment sites

// Now perform the tab opening, closing, and other operations
var finalTabs = socialWindow
                    .tabOpen() // Open a new tab for cat memes
                    .join(videoWindow.tabClose(2)) // Close third tab in video window, and join
                    .join(workWindow.tabClose(1).tabOpen());

alert(finalTabs.tabs);

//SPLICE(INDEX,NUM) return a spliced array & change the original array. So tabsAfterIndex should go with 1 instead of index.


//Another principle of functional programming is to always declare your dependencies explicitly. 
//The function is easier to test, you know exactly what input it takes, and it won't depend on anything else in your program.

INTERMEDIATE JS ALGORITHM

Make Person

var Person = function(firstAndLast) {
  // Complete the method below and implement the others similarly

  this.getFullName = function() {
       return firstAndLast;
  };
  this.getFirstName = function() {
   return firstAndLast.split(' ')[0];
  }
  this.getLastName = function() {
   return firstAndLast.split(' ')[1];
  }
  this.setFirstName = function(first) {
    firstAndLast = first + ' ' + firstAndLast.split(' ')[1];
  }
  this.setLastName = function(last) {
    firstAndLast = firstAndLast.split(' ')[0] + ' ' + last;
  }
  this.setFullName = function(newName) {
    firstAndLast = newName;
  }
  return firstAndLast;
};

var bob = new Person('Bob Ross');
bob.getFullName();