title: Create class over and over?
body: <p>When a user opens a modal I create a class:</p>
  
  <pre><code>app.product = new app.Product();
  </code></pre>
  
  <p>What would happen if the user opens the modal over and over again throughout the use of the site?</p>
  
  <p>Would I get 1000s of repeated classes, or would the original one be replaced time and time again.</p>
  
  <p>Would doing this have any effect on memory/performance?</p>