title: How To use load listener in Extjs4
body: <p>I am learning how to utilize the load event ..how do i go about
  catching the loading of data.. I just n4ed  a sample example.. to understand how it works and how data is manipulated inside the callback function</p>
  
  <p>Thanks</p>
  
  <pre><code>store.addListener("load", dataLoadCallback);
  
  
  function dataLoadCallBack((store, records, success))
  
  
  }
  </code></pre>