Generating JSON from a query I am trying to generate JSON from a query. All this seems to be too much grinding it out.

string function getJSON() output="false"    {   

  var result = "[";
  var myrow = 0;

  for(var row in this.qryLocation)  {
    myrow++;
    result &amp;= "[" 
             &amp; row.LocationID                     &amp; ',' 
             &amp; '"' &amp; row.Address &amp; " " &amp; row.City &amp; '",' 
             &amp; '"' &amp; row.formatted_CreateDate     &amp; '"'
             &amp; ']' 
             &amp; myRow &lt; this.qryLocation.recordcount ? ',' : ''; 
    } // end for-in query

  return result &amp; "]";  
  }


All this seems very hard to read, especially making sure that the last row does not get an extra comma.
I agree with Adam's comment. Generally, you should avoid rolling-your-own JSON. Just create native CF objects as usual (ie CF arrays and structures). Then use SerializeJSON to generate the JSON string. 

SerializeJSON eliminates the need for manual quoting, which dramatically improves the readability of the code IMO. It also handles any escaping of object values automatically (the current code does not). Granted, Adobe's SerializeJSON function does have a few .. "quirks". So you may prefer to use a different implementation. However, the basic approach remains the same.

string function getJSON() output="false"    {    
  var result = [];

  for(var row in this.qryLocation)  {
    arrayAppend(result, [ row.LocationID, row.Address &amp; " " &amp; row.City, row.formatted_CreateDate ] );
  } 

  return serializeJSON(result);  
}