list.example.js

var navItems = new Arr(
  {
    name: 'Home',
    path: '/'
  },
  {
    name: 'About Us',
    path: '/aboutus',
    active: true
  },
  {
    name: 'Projects',
    path: '/projects',
    active: true
  }
);

var list = new List(navItems, document.getElementById('nav'), '<li><a href="{{path}}">{{name}}</a></li>');

navItems.push({
  name: 'Settings',
  path: '/settings'
});