title: Examples of practical javascript object oriented design patterns
body: <p>What object oriented design patterns do you use in your application's javascript, and why? </p>
  
  <p>Feel free to post code, even if there is no formal design pattern attached to it. </p>
  
  <p>I have written plenty of javascript, but I have not applied much object orientated patterns to what I am doing, and I am sure i am missing a lot.</p>