How to set Column formatting for JavaScript Array Data ?Please Reply i need it badly.

Please Tell me How to set Column Formatting for JavaScript Array?

For example For xml table we format column data by
table.setFormats([string, string, number1, number1, number2, date]);

But I dont know Please let me know how to do the same for the JavaScrit Array myData which contains the data in Basic.htm in examples..Please tell me i waiting for your reply