still dunno

var bob = {
    firstName: "Bob",
    lastName: "Jones",

    phoneNumber: "(650) 777 - 7777",
    email: "bob.jones@example.com"
};

var mary = {
    firstName: "Mary",
    lastName: "Johnson",

    phoneNumber: "(650) 888 - 8888",
    email: "mary.johnson@example.com"
};

var contacts = [bob, mary, newContact];

function printPerson (contact) {
    console.log(contact.firstName + " " + contact.lastName);
}

function list (){
    numberOfItems = contacts.length;
    for (i=0; i<numberOfItems; i++){
        printPerson(contacts[i]);
    }
}

function search(lastName){
    numberOfContacts = contacts.length;
    for (i=0; i<numberOfContacts; i++){
        if(lastName === contacts[i].lastName){
        return printPerson(contacts[i]);
        }
    }
}

function add(firstName, lastName, email, telephone){
    var newContact = new Object();
    newContact.firstName = firstName;
    newContact.lastName = lastName;
    newContact.email = email;
    newContact.telephone = telephone;

contacts[contacts.length] = newContact;
}

var firstName = prompt("First Name?");
var lastName = prompt("Last Name?");
var email = prompt("Email?");
var telephone = prompt("Telephone?");
list();
search("Jones");
add(firstName, lastName, email, telephone);