title: Dojo Grid refuses to sort by Date. How to get this to work?
body: <p>I have a Dojo Grid with a date column. Despite using a custom formatter, it always does a string sort. Note that my incoming dates will be formatted as 02/17/2005 and I cannot change that.</p>
  
  <pre><code>formatDate = function(d){
  return dojo.date.locale.format(new Date(d), {datePattern: "M/dd/yyyy", formatLength: 'short', selector: "date"});
  }
  
  var myData= [
  {field: "transactionDate", name: "Transaction Date", width: "115px", datatype: "date", formatter: formatDate  },
  {field: "description", name: "Transaction Description", width: "170px" },
  ]];
  
  var storeData = {
  items: [
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"02/15/2010",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"01/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"09/15/2009",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
    ,
    {
    transactionDate:"04/15/2011",
    description:"A description of the transaction"
    }
  ]};
  </code></pre>
  
  <hr>
  
  <pre><code> &lt;div class="claro" style="width: 835px; height: 300px;"&gt;
      &lt;div dojotype="dojo.data.ItemFileReadStore" jsID="dataStoreForGrid" data="storeData"&gt;&lt;/div&gt;
      &lt;div id="grid" dojotype="dojox.grid.DataGrid" store="transferStoreForGrid" clientSort="true" jsID="SomeId" structure="myData" rowsperpage="40" &gt;&lt;/div&gt;
    &lt;/div&gt;
  </code></pre>
  
  <hr>
  
  <p>Per Peller's suggestion, I tried formatting as ISO date. Thais had no affect on sorting:</p>
  
  <pre><code>    formatDate = function(d){
  var d2 = dojo.date.stamp.fromISOString(ISODateString(new Date(d)));
  return dojo.date.locale.format(d2, {selector: 'date', formatLength: 'long'});
  }
  
  function ISODateString(d) {
  function pad(n){
  return n&amp;lt;10 ? '0'+n : n
  }
  return d.getUTCFullYear()+'-'
  + pad(d.getUTCMonth()+1)+'-'
  + pad(d.getUTCDate())+'T'
  + pad(d.getUTCHours())+':'
  + pad(d.getUTCMinutes())+':'
  + pad(d.getUTCSeconds())+'Z'
  }
  </code></pre>