title: How to print Count, Sum of backbone collections items using underscore.js and
body: <p>I have following </p>
  
  <pre><code> var cart= [{ item: "A", price: 2 },
               { item: "B", price: 3 },
               { item: "A", price: 2 },
               { item: "C", price: 5 },
               { item: "C", price: 5 },
               { item: "A", price: 2 }];
  </code></pre>
  
  <p>Now i wanted output like.</p>
  
  <pre><code>Item   Price   Qty   Total
  A      2       3     6    
  B      3       1     3
  C      5       2     10
  </code></pre>