var employee = {    "firstName" : John    , "lastName" : Doe    , "employeeNumber" : 123    , "title" : "Accountant"}var lastName = employee.lastName;  //Access the last namevar title = employee.title; //Access the titleemployee.employeeNumber = 456;  //Change the employee number<employee>    <firstName>John</firstName>    <lastName>Doe</lastName>    <employeeNumber>123</employeeNumber>    <title>Accountant</title></employee>