sample composition OOP in JS

gistfile1.js

function Task(name) {
  var self = this;
  self.getName = function() { return name; }
  self.getAsigner = function() { return 'Frank'; }
  self.getAssignee = function() { return 'Joe'; }
  self.foo = function() { return 'bar'; }
}

function TimedTask(name, startTime) {
  var self = this;
  var task = new Task(name);
  
  // bring over any functions exposed by the task
  for (key in task) {
    self[key] = task[key];
  }
  
  self.getDuration = function() { return Date.now - startTime; }
  self.foo = function() { return 'bang'; } // override task.foo
}

var task1 = new TimedTask("task1", Date.now());
var task2 = new TimedTask("task2", Date.now());

Thanks for the example. You're example is essentially doing the same thing as assigning a prototype to establish inheritence, so if this syntax feels more comfortable then continue to use it.