How to delete rows with local data in jqgrid

You can use delRowData method do delete any local row.

You can do use delGridRow from the form editing if you need it. I described the way here and used for formatter:’actions’ (see here, here and originally here).

var grid = $("#list"),
    myDelOptions = {
        // because I use "local" data I don't want to send the changes
        // to the server so I use "processing:true" setting and delete
        // the row manually in onclickSubmit
        onclickSubmit: function(options, rowid) {
            var grid_id = $.jgrid.jqID(grid[0].id),
                grid_p = grid[0].p,
                newPage = grid_p.page;

            // reset the value of processing option which could be modified
            options.processing = true;

            // delete the row
            grid.delRowData(rowid);
            $.jgrid.hideModal("#delmod"+grid_id,
                              {gb:"#gbox_"+grid_id,
                              jqm:options.jqModal,onClose:options.onClose});

            if (grid_p.lastpage > 1) {// on the multipage grid reload the grid
                if (grid_p.reccount === 0 && newPage === grid_p.lastpage) {
                    // if after deliting there are no rows on the current page
                    // which is the last page of the grid
                    newPage--; // go to the previous page
                }
                // reload grid to make the row from the next page visable.
                grid.trigger("reloadGrid", [{page:newPage}]);
            }

            return true;
        },
        processing:true
    };

and then use

grid.jqGrid('delGridRow', rowid, myDelOptions);

UPDATED: In case of multiselect: true the myDelOptions can be modified to the following:

var grid = $("#list"),
    myDelOptions = {
        // because I use "local" data I don't want to send the changes
        // to the server so I use "processing:true" setting and delete
        // the row manually in onclickSubmit
        onclickSubmit: function(options) {
            var grid_id = $.jgrid.jqID(grid[0].id),
                grid_p = grid[0].p,
                newPage = grid_p.page,
                rowids = grid_p.multiselect? grid_p.selarrrow: [grid_p.selrow];

            // reset the value of processing option which could be modified
            options.processing = true;

            // delete the row
            $.each(rowids,function(){
                grid.delRowData(this);
            });
            $.jgrid.hideModal("#delmod"+grid_id,
                              {gb:"#gbox_"+grid_id,
                              jqm:options.jqModal,onClose:options.onClose});

            if (grid_p.lastpage > 1) {// on the multipage grid reload the grid
                if (grid_p.reccount === 0 && newPage === grid_p.lastpage) {
                    // if after deliting there are no rows on the current page
                    // which is the last page of the grid
                    newPage--; // go to the previous page
                }
                // reload grid to make the row from the next page visable.
                grid.trigger("reloadGrid", [{page:newPage}]);
            }

            return true;
        },
        processing:true
    };

UPDATED 2: To have keyboard support on the Delete operation and to set “Delete” button as default you can add in the delSettings additional option

afterShowForm: function($form) {
    var form = $form.parent()[0];
    // Delete button: "#dData", Cancel button: "#eData"
    $("#dData",form).attr("tabindex","1000");
    $("#eData",form).attr("tabindex","1001");
    setTimeout(function() {
        $("#dData",form).focus(); // set the focus on "Delete" button
    },50);
}