Filter jqGrid programmatically on client?

Is there a way to filter the data currently displayed in a jqGrid programmatically (in Javascript, not server-side)? All the search examples seem to depend on using jqGrid's own search UI, which doesn't work for me. For example, I开发者_如何学JAVA'd like to be able to filter based on user actions elsewhere on a page.

I'm imagining something like

jQuery("#grid_id").filter('CategoryID', selectedCategoryID);

where CategoryID is a column in the grid and selectedCategoryID contains, for example, a value chosen by the user in a select element.

If you want to pre-filter your data first:

$('#myGrid').setGridParam({ data: filtereddataarray }).trigger("reloadGrid");

where filtereddataarray contains only records you want to display for this view

If you want to construct your filter programmatically(I use this method, mostly):

var filters = { "groupOp": "AND", "rules": [{ "field": "id", "op": "eq", "data": "9" }, { "field": "amount", "op": "ge", "data": "10" }, { "field": "name", "op": "cn", "data": "do i"}] };

//To filter:
jqGridFilter(filters , $('#myGrid'));

//To reset: 
jqGridFilter(null, $('#myGrid'));

    function jqGridFilter(filtersparam, grid) {
        grid.setGridParam({
            postData: {
                filters: filtersparam
            },
            search: true
        });
        grid.trigger("reloadGrid");
    }

You could pass JSON as the data and use the setGridParam method to reload the data!

I have never tried this and not sure how you would get jqgrid to use your client data rather than hit a URL!

Have you had any luck?