Wddxrecordset Object; Addcolumn - MACROMEDIA COLDFUSION 4.5-CFML LANGUAGE Reference

Chapter 3: WDDX JavaScript Objects
...
else if (typeof(obj) == "number")
{
// Number value
this.write("<number>" + obj + "</number>");
}
else if (typeof(obj) == "boolean")
{
// Boolean value
this.write("<boolean value='" + obj + "'/>");
}
...

WddxRecordset Object

The WddxRecordset object includes functions that you call as needed when
constructing a WDDX recordset.

addColumn

Adds the specified column to all rows in the WddxRecordset instance.
Syntax
object .addColumn( name )
object
Instance name of the WddxRecordset object.
name
Name of the column to add.
Return
None.
value
Usage
This function adds the specified column to every row of the WDDX record set. Initially
the new column's values are set to NULL.
Example
This example calls the addColumn function:
// create a new recordset
rs = new WddxRecordset();
// add a new column
rs.addColumn("NewColumn");
// extend the recordset by 3 rows
rs.addRows(3);
// set an element in the first row
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