gistfile1.js

function User (userData) {
  this.id = userData.id;
  this.firstName = userData.firstName;
  this.lastName = userData.lastName;
  this.displayName = this.firstName + " " + this.lastName;
  this.email = userData.email;
  
  this.admin = userData.admin || 0;
  
  this.checkRights = function (code) {
    if (this.isAdmin()) return true;
    
    return (this.rights.split(',').indexOf(code)) ? true : false;
  };
  
  this.isAdmin = function () {
    return (this.admin == 1) ? true : false;
  }
}

var users = [
  {firstName: 'Brendan', lastName: 'Scarvell', email: '[email protected]', admin: 1},
  {firstName: 'Foo', lastName: 'Bar', email: '[email protected]', admin: 0},
  {firstName: 'Chloe', lastName: 'Dog', email: '[email protected]', admin: 1},
];

users = users.map(function(u){ return new User(u); });