Adding Classes Using JSON Data Format

Is it possible to add custom classes to rows/columns/cells using the JSON data format? It looks like you can add specific styles, however, we do not want the back end service to dictate front end styles. Classes would be better.

I’ve found 2 related posts:
JSON Format Post
XML Format Post

Is only the XML format supported?

css class can be applied to the cell or the row using the json.
For example:

{"value":"Stephen King","class":"hov"},

NOTE: dhtmlxgrid_json.js should be added to the page. YOu can find it in “codebase/ext/” directory of dhtmlxGrid (PRO version only).