title: jquery DataTables. How to get filtered (visible) rows
body: <p>I have a button that apply filter to jquery datatable</p>
  
  <pre><code>$("#buttonFilter").button().click(function() {
                  if (lboxColor.val() != null) {
                      jqTable.fnFilter($("option:selected", lboxColor).text(), 1);
                  }
              });
  </code></pre>
  
  <p>It shows me for example 47 rows from 60.
  I tried .fnGetData() and fnGetNodes() but it shows me all rows, but not filtered.
  How could I get 47 rows?</p>