jqgrid获取选择行的值

var params = $("#grid_1").jqGrid('getGridParam', 'selarrrow');

        if (!params || params.length == 0) {

            alert('请选择');

            return;

        }

 var ids = $("#grid_1").jqGrid('getGridParam','selarrrow');

 

 for(i=0 ; i < ids.length; i++){

        var rowData  = $("#grid_1").jqGrid('getRowData',ids[i]);

        var quantity = rowData.productQuantity;

}