Ajax call method which return json Data

Question

Hi, I make one function , which i want to return json value , for this which return type i mention in function:
This is javascript which call Retrieve method.
<script>
debugger;
         var remoteDatasource = new kendo.data.DataSource({
             transport: {
                 read: {
  type:"POST",
  url: "Controllers/Home.cfc",
  dataType: "json",
                     data: {
  method: "Retrieve",
                         dataLists: JSON.stringify(request)
</script>
Home.cfc
component
remote   function Retrieve(string dataLists)
  try
            q = new Query();
            q.setsql("SELECT * FROM Product");
            qResult = q.execute().getresult();
            col_len = ListLen(qResult.Columnlist);
            dataArray = ArrayNew(1);
            row = 0;
            col = 0;
            for(row = 1; row <= len; row++)
                 for(col = 1; col <= col_len; col++)
                      FieldName = ListGetAt(qResult.Columnlist, col);
                      dataArray[row][col] = qResult[FieldName][col];
      jsonvar=serializeJSON(dataArray);
  catch(any e)
return jsonvar;

Answer 1

One can see immediately that you have to make the following corrections, at least:
Give the query a name;
Point the query to a datasource;
Define the variable 'len' (even better, use a different, less confusing, name for the variable).