title: store totalLength extjs
body: <p>I have a store like this: </p>
  
  <pre><code>var store = new Ext.data.Store({
      id: 'store',
      url: 'user-list',
      remoteSort: true,
      reader: new Ext.data.JsonReader({
          root: 'data',
          totalProperty: 'result',
          id: 'id'
      }, [....])
  });
  store.load({
      params: {
          start: 0,
          limit: myPageSize
      }
  });
  </code></pre>
  
  <p>how can I access totalLength off my array.
  i used this following statement but they didn't worked :</p>
  
  <pre><code>console.log(store.totalLength)
  
  console.log(this.store.totalLength)
  
  console.log(store.getTotalCount())
  
  console.log(this.store.getTotalCount())
  </code></pre>
  
  <p>they are return 'undefined' result.</p>
  
  <p>My server JSON result is like this:</p>
  
  <pre><code>success:true
  
  result:26
  
  data:[Object]
  </code></pre>