title: SlickGrid: determine whether row is selected
body: <p>SlickGrid:</p>
  
  <p>Is there a 'selected'/'isSelected' or similar property for grid rows?</p>
  
  <p>If I use 'grid.getSelectedRows' then the rows seem to be returned in the order they were selected (clicked), not necessarily in the order they appear on the grid. I want the selected rows in visible order, top to bottom.</p>
  
  <p>I can get each item with grid.getDataItem but how do I determine whether the row is selected? Do I need the properties for the row rather than the data item?</p>
  
  <pre><code>for (var i = 0, ii = grid.getDataLength(); i &lt; ii; i++) {
  var item = grid.getDataItem(i);
  if (!item.selected()) {          &lt;- fails because there is no selected property
          continue;
  }...
  </code></pre>
  
  <p>Thanks!</p>