index.html

<div id="output"></div>

script.js

//create an object
var friends = {};

var Friend = function ( config ) {
  this.firstName = config.firstName;
  this.lastName = config.lastName;
  this.number = config.number;
  this.address = config.address;
  this.email = config.email;
  this.getMyFullName = function () {
      logger( this.firstName + " " + this.lastName );
  };
  this.getMyFullName();
}

//add people to it
friends.bill = new Friend({           //observe this declaration as bill is an object of friends
  firstName: "Bill",
  lastName: "Gates",
  number: "(206) 555-5555",
  address: ['One Microsoft Way','Redmond','WA','98052']
});

//add another
friends.steve = new Friend({
  firstName: "Steve",
  lastName: "Jobs",
  number: "(408) 555-5555",
  address: ['1 Infinite Loop','Cupertino','CA','95014']
});

//log out all contents of the object
function list (obj) {
  for(var prop in obj) {
    logger(prop);
  }
};

//search for "steve"
function search (name) {
  for(var prop in friends) {
    if(friends[prop].firstName === name) {
      logger(friends[prop]);
      return friends[prop];
    }
  }
};

function add (firstName, lastName, phoneNumber, email){
    friends[ firstName.toLowerCase() ] = new Friend({
        firstName: firstName,
        lastName: lastName,
        number: phoneNumber,
        email: email
    });
}

function logger () {
  for ( var i in arguments ) {
    document.getElementById("output").innerHTML += "<br>"+ arguments[i];
    console.log(arguments[i]);
  }
}

add("Cyril", "Celestine", "5042282838", "cc@cc.com");
list(friends);
var tmp = search("Cyril");



console.log(friends);


tmp.getMyFullName();