&format=json
Export the data as a JSON function.
&jsonp=callback
Change the name of the function returned with JSON to [callback]
e.g callback([{"project_id":"126"}])
&onload=user_function
Adds [function] as an extra callback to be run after the JSON function
e.g. s3db_json([{"project_id":"126"}]); user_function()
&jsonpp=user_var
Adds [function] as an extra callback to be run after the JSON function
e.g. s3db_json([{"project_id":"126"}], "user_var")