title: Ext JS load store
body: <p>I am facing a problem about reload store for grid.</p>
  
  <pre><code>var all = Ext.create('Ext.data.Store', {
  model:'LiveLogModel',
  proxy: {
      type: 'memory',
      reader: {
          type: 'json',
          root: 'items'
      }
  } 
  });
  all.insert(0,newRecords);
  </code></pre>
  
  <p>Here is my store. data of the store is added dynamically. The problem is after while I want to refresh grid for changing row colour in the grid. So I need to reload the store. However I cannot call <strong>all.road()</strong>. "Cannot read property 'length' of undefined" error appeared.</p>
  
  <p>What's the problem here? </p>