Objects in address books are fun!5

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];

function printPerson (person) {
    console.log(person.firstName + " " + person.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]);
    }
}

 search("Johnson");