jqGrid - sort the grid on loading in descending order

I am trying to sort a static grid (made from HTML table) to sort o开发者_StackOverflow中文版n load using the following snippet...

$("#my_table").setGridParam({sortname:'my_date'}).trigger('reloadGrid');

This does the job but it sorts the date in ascending order. How can I make it sort on load in descending order?

Regards

You need sortorder: "desc"

$("#my_table").setGridParam({sortname:'my_date', sortorder: 'desc'})
   .trigger('reloadGrid');