title: Getting row data from invisible row in jqGrid
body: <p>How can I get data from a row that's not in the current page, knowing its row id?
  The grid has <code>datatype:"json"</code></p>
  
  <p>I tried using </p>
  
  <pre><code>$('#grid').jqGrid ('getRowData', rowId);
  </code></pre>
  
  <p>but only works for visible rows (rows in the current page)</p>